Method for preparing hair composition for heat damage protection comprising camellia-derived components and composition prepared thereof

Abstract

The present invention relates to a method for preparing a heat-damaged hair composition containing components derived from camellia, and more specifically, to a method for preparing a silicone base mixture by sequentially mixing cyclopentasiloxane, dimethicone, and cyclohexasiloxane, sequentially adding castor seed oil, camellia seed oil, green tea seed oil, and andiroba seed oil, adding camellia seed extract and camellia flower extract under differential temperature conditions, and sequentially adding isododecane and C12-15 alkyl benzoate to prepare a final composition. The manufacturing method according to the present invention forms a uniform thermal protective film with a multilayer structure on the hair surface through sequential input from low-viscosity silicone to high-viscosity silicone and a stepwise increase in stirring speed, improves silicone-oil compatibility by utilizing ricinoleic acid from castor seed oil as an emulsifying medium, minimizes thermal denaturation of active ingredients through differential input of camellia-derived ingredients, and simultaneously achieves initial rapid drying and long-lasting durability by utilizing a dual carrier system with different volatility. As a result of human application tests, the composition of the present invention showed an additional heat damage protection effect of 10.4% compared to untreated hair, a hair gloss improvement effect of 21.5%, a hair volume increase effect of 4.2%, and a split hair improvement effect of 7.5%, thereby simultaneously providing multifunctional effects of heat damage protection, gloss, volume, and split hair improvement. The present invention can be usefully applied to the cosmetics industry, particularly in the field of hair care products, and provides a manufacturing method with excellent reproducibility and industrial productivity through systematic manufacturing process design.

Description

Technology Field

[0001] The present invention relates to a method for preparing a heat-damaged hair composition containing a component derived from camellia. Background Technology

[0002] Recently, as the use of high-temperature heat styling tools has become widespread, serious issues regarding hair damage caused by the use of such tools, including hair dryers, curling irons, and hair irons, have emerged. Generally, hair dryers apply heat directly to the hair at high temperatures ranging from 80°C to 120°C, and hair irons at 150°C to 230°C. Such high-temperature heat treatment causes denaturation of hair keratin proteins, damage to the hair cuticle, moisture evaporation, and a decrease in shine.

[0003] Conventionally, heat protection compositions with silicone oil as the main component have been used to prevent heat damage to hair. Korean Registered Patent Publication No. 10-1795533 discloses a hair cosmetic composition having a heat protection function, comprising amino-modified silicone, volatile silicone oil, and non-volatile silicone oil. The prior art provides a technology that protects hair from heat by forming a film on the surface of the hair using silicone components.

[0004] In addition, Korean Published Patent Application No. 10-2022-0128048 discloses a cosmetic composition for hair care comprising isododecane, C12-15 alkyl benzoate, a silicone compound, and a vegetable oil. The prior art provides a technology that simultaneously offers a pleasant feel and a moisturizing effect through a combination of a volatile solvent and an emollient component.

[0005] However, the aforementioned conventional technologies rely merely on the physical barrier effect through the formation of a silicone film or are limited to the simple mixing of ingredients, resulting in insufficient heat protection and limitations in simultaneously achieving multifunctional effects such as improved hair shine, increased volume, and improvement of split ends.

[0006] In particular, conventional technologies fail to systematically control the order of ingredient input, temperature conditions, and stirring conditions during the manufacturing process, resulting in unoptimized interactions between ingredients and inconsistent stability and efficacy of the final product. Furthermore, even when using plant-derived ingredients, the lack of process design to prevent the denaturation of heat-sensitive active ingredients leads to limited actual efficacy.

[0007] Therefore, there is a need for a method to manufacture a hair composition that includes ingredients derived from camellia trees, maximizes synergistic effects between ingredients through a systematic manufacturing process, and simultaneously provides multifunctional effects such as protection against heat damage, hair shine, volume, and improvement of split ends. Prior art literature

[0008] Korean Registered Patent 10-0335719 Korean Published Patent 10-2004-0083097 Korean Published Patent 1특2002-0018297 Korean Published Patent 10-2025-0118350 The problem to be solved

[0009] The present invention has been devised to solve the problems of the prior art as described above. The objective of the present invention is to provide a method for manufacturing a hair composition capable of maximizing the heat damage protection effect through the systematic sequential mixing of a triple camellia complex comprising camellia seed oil, camellia seed extract, and camellia flower extract with a silicone base.

[0010] Another objective of the present invention is to provide a method for preparing a silicone-based mixture capable of forming a uniform protective film with a multilayer structure on the surface of hair by sequentially adding silicone from low viscosity to high viscosity and gradually increasing the stirring speed.

[0011] Another objective of the present invention is to provide a manufacturing method that utilizes ricinoleic acid contained in castor seed oil as an emulsifying agent to improve compatibility between a silicone component and a vegetable oil component and to form a stable oil-in-silicone dispersion structure.

[0012] Another objective of the present invention is to provide a manufacturing method that ensures the stability of active ingredients while minimizing thermal denaturation of saponin and polyphenol components by adding camellia seed extract and camellia flower extract at different temperatures.

[0013] Another objective of the present invention is to provide a method for manufacturing a dual carrier system capable of simultaneously achieving initial rapid drying and long-term persistence by utilizing the difference in evaporation rates between isododecane and C12-15 alkyl benzoate.

[0014] Another objective of the present invention is to provide a method for manufacturing a multifunctional hair composition that can additionally protect the hair cuticle from heat damage by more than 10%, improve hair gloss by more than 20%, increase hair volume, and improve split ends.

[0015] Another objective of the present invention is to provide a composition for protecting hair from heat damage produced by the above-described manufacturing method. means of solving the problem

[0016] The present invention relates to a method for preparing a composition for protecting hair from heat damage, comprising: a. preparing a silicone base mixture by mixing 30 to 50 parts by weight of cyclopentasiloxane, 10 to 20 parts by weight of dimethicone, and 5 to 15 parts by weight of cyclohexasiloxane; b. sequentially adding and mixing 1 to 5 parts by weight of castor seed oil, 3 to 10 parts by weight of camellia seed oil, 1 to 5 parts by weight of green tea seed oil, and 1 to 5 parts by weight of andiroba seed oil to 100 parts by weight of the silicone base mixture; c. sequentially adding and mixing 0.1 to 3 parts by weight of camellia seed extract and 0.1 to 3 parts by weight of camellia flower extract to 100 parts by weight of the mixture from step b; d. A method for preparing a composition for protecting hair from heat damage is provided, comprising: a step of sequentially adding and mixing 10 to 30 parts by weight of isododecane and 1 to 10 parts by weight of C12-15 alkyl benzoate to 100 parts by weight of the mixture of step c; and e. a step of preparing a final mixture by adding 0.01 to 1 part by weight of tocopherol and 0.01 to 2 parts by weight of fragrance to 100 parts by weight of the mixture of step d.

[0017] At this time, step a comprises: a1. introducing cyclopentasiloxane into a reaction vessel and stirring at room temperature at 100 RPM to 500 RPM for 3 to 10 minutes; a2. adding dimethicone to the stirred cyclopentasiloxane and stirring at room temperature at 200 RPM to 800 RPM for 5 to 15 minutes to form an intermediate silicon mixture; a3. adding cyclohexasiloxane to the intermediate silicon mixture and stirring at room temperature at 500 RPM to 1,500 RPM for 10 to 30 minutes to prepare the silicon base mixture; and a4. homogenizing the silicon base mixture at 500 RPM to 2,000 RPM for 5 to 15 minutes. It includes, wherein the cyclopentasiloxane of step a1 has a viscosity of 3 to 6 cSt, the dimethicone of step a2 has a viscosity of 100 to 1,000 cSt, and the cyclohexasiloxane of step a3 has a viscosity of 5 to 10 cSt.

[0018] At this time, the above step b comprises: b1. a step of adding castor seed oil to the silicone base mixture and stirring first for 5 to 15 minutes at 200 RPM to 600 RPM at a temperature of 25℃ to 40℃; b2. a step of adding camellia seed oil to the mixture stirred first and stirring second for 5 to 20 minutes at 200 RPM to 600 RPM at a temperature of 25℃ to 40℃; b3. a step of adding green tea seed oil to the mixture stirred second and stirring third for 5 to 15 minutes at 200 RPM to 600 RPM at a temperature of 25℃ to 40℃; b4. a step of adding andiroba seed oil to the mixture stirred third and stirring fourth for 10 to 25 minutes at 200 RPM to 800 RPM at a temperature of 25℃ to 40℃; and b5. a step of stabilizing the mixture stirred four times while cooling it to room temperature at 100 RPM to 500 RPM for 5 to 15 minutes; wherein the castor seed oil contains 80 weight% or more of ricinoleic acid and is oriented at the interface between the silicone base mixture and the vegetable oil components subsequently added in step b1.

[0019] At this time, step c comprises: c1. adding camellia seed extract to the mixture of step b and stirring the first extract at 100 RPM to 500 RPM for 10 to 25 minutes at a temperature of 10℃ to 30℃; c2. raising the temperature of the mixture of the first extract to 20℃ to 35℃; c3. adding camellia flower extract to the heated mixture and stirring the second extract at 200 RPM to 600 RPM for 15 to 30 minutes at a temperature of 20℃ to 40℃; and c4. homogenizing the mixture of the second extract at 300 RPM to 800 RPM for 10 to 20 minutes. The method comprises, wherein the camellia seed extract contains 0.5 to 5 weight% of a saponin compound and the camellia flower extract contains 1 to 10 weight% of a polyphenol compound, and is characterized in that the temperature of step c1 is lower than the temperature of step c3.

[0020] At this time, step d comprises: d1. adding isododecane to the mixture of step c and stirring a primary carrier at 300 RPM to 800 RPM for 5 to 15 minutes at a temperature of 15°C to 35°C; d2. stirring the primary carrier-stirred mixture at 200 RPM to 600 RPM for 3 to 10 minutes while increasing the temperature to 20°C to 40°C; d3. adding C12-15 alkylbenzoate to the stirring-stirred mixture and stirring a secondary carrier at 300 RPM to 700 RPM for 10 to 20 minutes at a temperature of 20°C to 40°C; and d4. stirring the secondary carrier-stirred mixture at 400 RPM to 1,000 RPM for 10 to 25 minutes while cooling it to room temperature. It is characterized by including, wherein the evaporation rate of the isododecane is 10 to 50 g / m²·h at 25°C and the evaporation rate of the C12-15 alkylbenzoate is 0.1 to 5 g / m²·h at 25°C. Effects of the invention

[0021] The method for preparing a composition for protecting against heat damage to hair according to the present invention has the following effects.

[0022] First, the present invention has the effect of forming a uniform and highly adhesive thermal protective film by sequentially adding cyclopentasiloxane, dimethicone, and cyclohexasiloxane in order of lowest viscosity and gradually increasing the stirring speed, thereby arranging the silicone components on the hair surface in a multilayer structure of low-viscosity, medium-viscosity, and high-viscosity layers.

[0023] Second, the present invention has the effect of improving emulsion stability and enabling uniform dispersion of oil components by first introducing castor seed oil into a silicone-based mixture, thereby orienting ricinoleic acid at the interface between the silicone component and the subsequently introduced vegetable oil components.

[0024] Third, the present invention has the effect of ensuring the stability of the active ingredient while minimizing the denaturation of heat-sensitive polyphenol ingredients by first adding the camellia seed extract at a low temperature (10°C to 30°C) to stabilize the saponic component, and then adding the camellia flower extract at a relatively high temperature (20°C to 40°C).

[0025] Fourth, the present invention has the effect of simultaneously achieving an initial sensation and a long-term protective effect by first adding isododecane (10 to 50 g / m²·h) with a fast evaporation rate to form a rapid primary film immediately after application to the hair, and then adding C12-15 alkyl benzoate (0.1 to 5 g / m²·h) with a slow evaporation rate to form a secondary film that lasts for a long time.

[0026] Fifth, the present invention has the effect of simultaneously exhibiting four effects: protection against heat damage, improvement of gloss, increase in volume, and improvement of split ends, by optimally combining a triple camellia complex of camellia seed oil, camellia seed extract, and camellia flower extract with a silicone base and carrier system.

[0027] Sixth, the composition according to the present invention has been verified to have clinically significant multifunctional effects, as shown in human application tests that it provides 10.4% additional heat damage protection effect compared to untreated hair, 21.5% improvement in hair gloss, 4.2% increase in hair volume, and 7.5% improvement in split ends.

[0028] Seventh, the present invention has the effect of stably producing a composition with high manufacturing yield and uniform quality by performing all manufacturing processes under mild conditions of room temperature to 45°C or lower, and minimizing the loss of active ingredients through sequential input of ingredients and temperature control.

[0029] Eighth, the present invention has the effect of providing a manufacturing method that is highly reproducible and capable of industrial mass production by clearly defining the temperature, stirring speed, and mixing time at each step of the manufacturing process. Specific details for implementing the invention

[0030] In the following, various modifications may be made to the embodiments, and thus the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, and substitutions to the embodiments are included within the scope of the rights.

[0031] Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed forms, and the scope of this specification includes modifications, equivalents, or substitutions that fall within the technical concept.

[0032] Terms such as "first" or "second" may be used to describe various components, but these terms should be interpreted solely for the purpose of distinguishing one component from another. For example, the first component may be named the second component, and similarly, the second component may be named the first component.

[0033] When it is stated that a component is "connected" to another component, it should be understood that it may be directly connected to or coupled with that other component, or that there may be other components in between.

[0034] The terms used in the embodiments are for illustrative purposes only and should not be interpreted as intended to be limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0035] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the embodiments pertain. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0036] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0037] In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the embodiments of the present invention.

[0038] In describing the present invention, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the invention, such detailed description is omitted. Where terms such as "comprising," "having," or "consisting of" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise.

[0039] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0040] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and as will be fully understood by those skilled in the art, various technical interlocking and operation are possible, and each embodiment may be implemented independently of one another or together in an interlocking relationship.

[0041] The present invention relates to a method for preparing a composition for protecting hair from heat damage, comprising: a. preparing a silicone base mixture by mixing 30 to 50 parts by weight of cyclopentasiloxane, 10 to 20 parts by weight of dimethicone, and 5 to 15 parts by weight of cyclohexasiloxane; b. sequentially adding and mixing 1 to 5 parts by weight of castor seed oil, 3 to 10 parts by weight of camellia seed oil, 1 to 5 parts by weight of green tea seed oil, and 1 to 5 parts by weight of andiroba seed oil to 100 parts by weight of the silicone base mixture; c. sequentially adding and mixing 0.1 to 3 parts by weight of camellia seed extract and 0.1 to 3 parts by weight of camellia flower extract to 100 parts by weight of the mixture from step b; d. A method for preparing a composition for protecting hair from heat damage is provided, comprising: a step of sequentially adding and mixing 10 to 30 parts by weight of isododecane and 1 to 10 parts by weight of C12-15 alkyl benzoate to 100 parts by weight of the mixture of step c; and e. a step of preparing a final mixture by adding 0.01 to 1 part by weight of tocopherol and 0.01 to 2 parts by weight of fragrance to 100 parts by weight of the mixture of step d.

[0042] At this time, step a comprises: a1. introducing cyclopentasiloxane into a reaction vessel and stirring at room temperature at 100 RPM to 500 RPM for 3 to 10 minutes; a2. adding dimethicone to the stirred cyclopentasiloxane and stirring at room temperature at 200 RPM to 800 RPM for 5 to 15 minutes to form an intermediate silicon mixture; a3. adding cyclohexasiloxane to the intermediate silicon mixture and stirring at room temperature at 500 RPM to 1,500 RPM for 10 to 30 minutes to prepare the silicon base mixture; and a4. homogenizing the silicon base mixture at 500 RPM to 2,000 RPM for 5 to 15 minutes. It includes, wherein the cyclopentasiloxane of step a1 has a viscosity of 3 to 6 cSt, the dimethicone of step a2 has a viscosity of 100 to 1,000 cSt, and the cyclohexasiloxane of step a3 has a viscosity of 5 to 10 cSt.

[0043] At this time, the above step b comprises: b1. a step of adding castor seed oil to the silicone base mixture and stirring first for 5 to 15 minutes at 200 RPM to 600 RPM at a temperature of 25℃ to 40℃; b2. a step of adding camellia seed oil to the mixture stirred first and stirring second for 5 to 20 minutes at 200 RPM to 600 RPM at a temperature of 25℃ to 40℃; b3. a step of adding green tea seed oil to the mixture stirred second and stirring third for 5 to 15 minutes at 200 RPM to 600 RPM at a temperature of 25℃ to 40℃; b4. a step of adding andiroba seed oil to the mixture stirred third and stirring fourth for 10 to 25 minutes at 200 RPM to 800 RPM at a temperature of 25℃ to 40℃; and b5. a step of stabilizing the mixture stirred four times while cooling it to room temperature at 100 RPM to 500 RPM for 5 to 15 minutes; wherein the castor seed oil contains 80 weight% or more of ricinoleic acid and is oriented at the interface between the silicone base mixture and the vegetable oil components subsequently added in step b1.

[0044] At this time, step c comprises: c1. adding camellia seed extract to the mixture of step b and stirring the first extract at 100 RPM to 500 RPM for 10 to 25 minutes at a temperature of 10℃ to 30℃; c2. raising the temperature of the mixture of the first extract to 20℃ to 35℃; c3. adding camellia flower extract to the heated mixture and stirring the second extract at 200 RPM to 600 RPM for 15 to 30 minutes at a temperature of 20℃ to 40℃; and c4. homogenizing the mixture of the second extract at 300 RPM to 800 RPM for 10 to 20 minutes. The method comprises, wherein the camellia seed extract contains 0.5 to 5 weight% of a saponin compound and the camellia flower extract contains 1 to 10 weight% of a polyphenol compound, and is characterized in that the temperature of step c1 is lower than the temperature of step c3.

[0045] At this time, step d comprises: d1. adding isododecane to the mixture of step c and stirring a primary carrier at 300 RPM to 800 RPM for 5 to 15 minutes at a temperature of 15°C to 35°C; d2. stirring the primary carrier-stirred mixture at 200 RPM to 600 RPM for 3 to 10 minutes while increasing the temperature to 20°C to 40°C; d3. adding C12-15 alkylbenzoate to the stirring-stirred mixture and stirring a secondary carrier at 300 RPM to 700 RPM for 10 to 20 minutes at a temperature of 20°C to 40°C; and d4. stirring the secondary carrier-stirred mixture at 400 RPM to 1,000 RPM for 10 to 25 minutes while cooling it to room temperature. It is characterized by including, wherein the evaporation rate of the isododecane is 10 to 50 g / m²·h at 25°C and the evaporation rate of the C12-15 alkylbenzoate is 0.1 to 5 g / m²·h at 25°C.

[0046] Specific details for implementing the invention

[0047] Reasons for selecting each material and technical significance

[0048] Preparation of Silicon-Based Mixtures and Their Critical Significance

[0049] The silicon base mixture of the present invention is prepared by mixing 30 to 50 parts by weight of cyclopentasiloxane, 10 to 20 parts by weight of dimethicone, and 5 to 15 parts by weight of cyclohexasiloxane.

[0050] Critical significance of the cyclopentasiloxane content range (30 to 50 parts by weight):

[0051] Cyclopentasiloxane is a low-viscosity volatile silicone with a viscosity of 3 to 6 cSt, and serves as the main solvent in the silicone-based mixture of the present invention. If the content of cyclopentasiloxane is less than 30 parts by weight, the viscosity of the overall composition becomes excessively high, resulting in poor spreadability when applied to hair and poor dispersion of subsequently added oil and extract components, which lowers the uniformity of the final composition and makes it difficult to spread evenly on the hair surface, causing areas with insufficient heat protection effects. Conversely, if it exceeds 50 parts by weight, the composition becomes excessively thin, making it prone to dripping after application to hair, and the thickness of the substantial protective film remaining on the hair surface after evaporation becomes thin, reducing the heat damage protection effect. Additionally, the relative content of dimethicone and cyclohexasiloxane decreases, thereby lowering the strength and durability of the film. Therefore, it is preferable to limit the content of cyclopentasiloxane to 30 to 50 parts by weight, and more preferably to 35 to 45 parts by weight.

[0052] Critical significance of the dimethicone content range (10 to 20 parts by weight):

[0053] Dimethicone is a medium-viscosity, non-volatile silicone with a viscosity of 100 to 1,000 cSt, and is a key component that blocks heat transfer by forming a stable protective film on the surface of the hair. If the dimethicone content is less than 10 parts by weight, there is a lack of substantial film-forming components remaining on the hair surface after the volatile silicone evaporates, resulting in a significant reduction in the heat protection effect, minimal improvement in hair gloss, and insufficient filling of damaged areas of split ends. Conversely, if it exceeds 20 parts by weight, the viscosity of the composition becomes excessively high, causing a stiff sensation during application, a heavy and limp feeling of the hair, and a decrease in consumer satisfaction as the excessive film hinders the natural movement of the hair. Additionally, if the dimethicone content is excessive, emulsion stability is reduced, which may lead to phase separation during product storage. Therefore, it is desirable to limit the dimethicone content to 10 to 20 parts by weight, and more preferably to 12 to 18 parts by weight.

[0054] Critical significance of the cyclohexasiloxane content range (5 to 15 parts by weight):

[0055] Cyclohexasiloxane is a low-viscosity volatile silicone with a viscosity of 5 to 10 cSt, and it serves to fill the viscosity gap between cyclopentasiloxane and dimethicone and improve the adhesion of the film. If the content of cyclohexasiloxane is less than 5 parts by weight, the viscosity difference between cyclopentasiloxane and dimethicone is not sufficiently alleviated, resulting in non-uniformity at the interlayer interface during film formation and reduced adhesion to the hair surface, causing the film to easily peel off or be lost during the use of heat styling tools. Conversely, if it exceeds 15 parts by weight, the proportion of volatile components in the total composition becomes excessively high, causing it to dry too quickly after application. Consequently, some of it evaporates before it can be evenly spread over the entire hair, and the amount of protective film remaining on the hair surface decreases, thereby reducing the heat protection effect. Therefore, it is preferable to limit the content of cyclohexasiloxane to 5 to 15 parts by weight, and more preferably to 7 to 12 parts by weight.

[0056] Critical Significance of Sequential Input and Stepwise Stirring

[0057] The present invention is characterized by sequentially adding cyclopentasiloxane, dimethicone, and cyclohexasiloxane in order of lowest viscosity, and gradually increasing the stirring speed at each addition step.

[0058] Critical Significance of the Primary Stirring Step of Cyclopentasiloxane:

[0059] The process of first adding cyclopentasiloxane to the reaction vessel and stirring at 100 to 500 RPM at room temperature for 3 to 10 minutes is intended to prepare the solvent component with the lowest viscosity first so that it can be used as a dispersion medium for subsequent components. If the stirring speed is less than 100 RPM, sufficient degassing and homogenization of the cyclopentasiloxane do not occur, leaving dissolved bubbles. This causes bubble generation when dimethicone and cyclohexasiloxane are added in the subsequent step, thereby impairing the appearance and stability of the final product. Conversely, if the speed exceeds 500 RPM, excessive stirring leads to the incorporation of air, causing bubbles and increasing unnecessary energy consumption. If the stirring time is less than 3 minutes, the homogenization of the cyclopentasiloxane is insufficient, and if it exceeds 10 minutes, the process time increases without any additional effect, resulting in reduced productivity. Therefore, the optimal condition is to stir at room temperature at 100 RPM to 500 RPM for 3 to 10 minutes.

[0060] Critical Significance of the Secondary Stirring Step of Dimethicone:

[0061] The process of adding dimethicone to cyclopentasiloxane that has been stirred once and stirring at room temperature at 200 RPM to 800 RPM for 5 to 15 minutes to form an intermediate silicon mixture is intended to uniformly disperse dimethicone, a medium viscosity component, in a low viscosity solvent. Since the viscosity of dimethicone (100 to 1,000 cSt) is about 17 to 330 times higher than the viscosity of cyclopentasiloxane (3 to 6 cSt), it is difficult to achieve uniform mixing without sufficient stirring, and localized high-viscosity regions are formed. If the stirring speed is less than 200 RPM, the dispersion of dimethicone is insufficient, causing viscosity variations within the mixture, and uneven mixing occurs when cyclohexasiloxane is added in a subsequent process. Conversely, if it exceeds 800 RPM, excessive bubbles are generated due to excessive shear force, and unnecessary stress may be applied to the molecular structure of dimethicone. If the stirring time is less than 5 minutes, complete dispersion of dimethicone is not achieved, and if it exceeds 15 minutes, only the process time increases without additional dispersion effect. Therefore, stirring at 200 RPM to 800 RPM for 5 to 15 minutes at room temperature is optimal.

[0062] Critical Significance of the Third Stirring Step of Cyclohexasiloxane:

[0063] The process of preparing a silicone-based mixture by adding cyclohexasiloxane to an intermediate silicone mixture and stirring at 500 to 1,500 RPM at room temperature for 10 to 30 minutes is intended to optimize the viscosity of the entire mixture and complete the viscosity gradient by additionally adding low-viscosity volatile silicone. Cyclohexasiloxane has a viscosity intermediate to that of cyclopentasiloxane and dimethicone; by adding it last, the viscosity gap between the three silicone components is gradually alleviated, and ultimately, when applied to the hair surface, a multilayer structure consisting of a low-viscosity layer, a medium-viscosity layer, and a high-viscosity layer is formed. If the stirring speed is less than 500 RPM, complete mixing of the three silicone components does not occur, resulting in residual viscosity non-uniformity; if it exceeds 1,500 RPM, excessive shear force leads to increased bubble generation and excessive energy consumption. If the stirring time is less than 10 minutes, the uniform dispersion of cyclohexasiloxane is insufficient, and if it exceeds 30 minutes, only the process time increases without additional mixing effect. Therefore, the optimal condition is to stir for 10 to 30 minutes at 500 RPM to 1,500 RPM at room temperature.

[0064] Critical Significance of the Homogenization Step:

[0065] The process of homogenizing the silicone base mixture, after the third stirring is completed, at 500 RPM to 2,000 RPM for 5 to 15 minutes is intended to ultimately eliminate even minute non-uniformities and secure a completely homogeneous silicone base. If the homogenization speed is less than 500 RPM, microscopic non-uniformities remain, which may cause localized phase separation or aggregation when oil and extract components are added in subsequent processes. Conversely, if it exceeds 2,000 RPM, excessive stirring may lead to excessive bubble generation, overloading of the equipment, and unnecessary decomposition of silicone molecules. If the homogenization time is less than 5 minutes, complete homogenization is not achieved, and if it exceeds 15 minutes, only process time and energy consumption increase without any additional homogenization effect. Therefore, the condition of homogenizing at 500 RPM to 2,000 RPM for 5 to 15 minutes is optimal.

[0066] Technical Significance of Sequential Viscosity Injection and Stepwise Increase in Stirring Speed:

[0067] In the present invention, the ingredients are added in the order of cyclopentasiloxane (3 to 6 cSt) → dimethicone (100 to 1,000 cSt) → cyclohexasiloxane (5 to 10 cSt), and the stirring speed is gradually increased from 100 to 500 RPM → 200 to 800 RPM → 500 to 1,500 RPM → 500 to 2,000 RPM. This is done to prepare a low-viscosity solvent first and utilize it as a dispersion medium for high-viscosity components, and to achieve complete homogenization while minimizing bubble generation by providing optimal mixing conditions suitable for the characteristics of each component through the gradual increase in stirring speed. This sequential process design implements a multi-layer thermal protection system in which, when finally applied to the hair surface, silicone components form a layered structure according to viscosity, the low-viscosity component penetrates into the fine gaps of the hair cuticle to form a primary adhesion layer, the medium-viscosity component performs a heat transfer blocking function as an intermediate layer, and the high-viscosity component provides durability as the outermost protective layer.

[0068] Critical Significance of Sequential Addition of Oil Mixtures and Emulsion Stabilization

[0069] Composition and component range of oil mixtures

[0070] The present invention sequentially adds and mixes 1 to 5 parts by weight of castor seed oil, 3 to 10 parts by weight of camellia seed oil, 1 to 5 parts by weight of green tea seed oil, and 1 to 5 parts by weight of andiroba seed oil to 100 parts by weight of a silicone base mixture.

[0071] Critical significance of the castor seed oil content range (1 to 5 parts by weight):

[0072] Castor seed oil is a vegetable oil containing 80% by weight or more of ricinoleic acid, and in the present invention, it serves as an emulsifying medium between the silicone component and the subsequently added vegetable oil components. Ricinoleic acid has a hydroxyl group (-OH) within its molecule, giving it affinity for both polar and non-polar components. It is oriented at the silicone-oil interface, reducing interfacial tension and improving emulsion stability. If the content of castor seed oil is less than 1 part by weight, the emulsifying medium effect is insufficient, so the subsequently added camellia seed oil, green tea seed oil, and andiroba seed oil are not uniformly dispersed in the silicone-based mixture; instead, localized aggregation or phase separation occurs, and instability occurs during product storage, such as the oil components rising or settling. Conversely, if it exceeds 5 parts by weight, the viscosity of the composition increases excessively due to the excessive ricinoleic acid, resulting in a sticky and heavy feel during use. Furthermore, after application to hair, the excessive oiliness causes the hair to feel limp and greasy, leading to reduced consumer satisfaction. Therefore, it is preferable that the content of castor seed oil be limited to 1 to 5 parts by weight, and more preferably 2 to 4 parts by weight.

[0073] Critical significance of the content range of camellia seed oil (3 to 10 parts by weight):

[0074] Camellia seed oil is a vegetable oil rich in unsaturated fatty acids with oleic acid as its main component, and it is a key ingredient that nourishes hair cuticles, improves shine, and prevents moisture loss caused by heat. If the content of camellia seed oil is less than 3 parts by weight, the hair nourishment effect is negligible and the shine improvement effect is insufficient; furthermore, when using heat styling tools, internal moisture evaporates excessively, causing the hair to become dry and brittle. Conversely, if it exceeds 10 parts by weight, the composition becomes too heavy and sticky due to the excessive oil content; the hair is coated with excessive oil, resulting in reduced volume and limp hair; and consumer complaints increase because it does not wash off easily during cleansing. Additionally, excessive oil content can disrupt the balance of the silicone-oil emulsion system, potentially causing phase separation. Therefore, it is preferable to limit the content of camellia seed oil to 3 to 10 parts by weight, and more preferably to 4 to 8 parts by weight.

[0075] Critical significance of the green tea seed oil content range (1 to 5 parts by weight):

[0076] Green tea seed oil contains tocopherol and polyphenol components, providing an antioxidant effect and serving to prevent oxidative damage to hair proteins and lipids caused by heat. If the content of green tea seed oil is less than 1 part by weight, the antioxidant effect is insufficient, and when using high-temperature heating appliances, oxidation of hair components proceeds, leading to a decrease in hair strength and discoloration, and hair damage accumulates with long-term use. Conversely, if it exceeds 5 parts by weight, the characteristic scent of green tea seed oil becomes excessively strong, disrupting the balance of the product's fragrance, and excessive antioxidant components may actually impair the stability of the composition; furthermore, the increase in cost-effectiveness is minimal, resulting in reduced economic efficiency. Therefore, it is desirable to limit the content of green tea seed oil to 1 to 5 parts by weight, and more preferably to 2 to 4 parts by weight.

[0077] Critical significance of the content range (1 to 5 parts by weight) of Andiroba seed oil:

[0078] Andiroba seed oil contains limonoid compounds that strengthen hair cuticles, protect hair from external stimuli, and fill in split ends. If the content of Andiroba seed oil is less than 1 part by weight, the hair cuticle strengthening effect is negligible and the effect on improving split ends is insufficient, and split ends persist even after the use of heat styling tools. Conversely, if it exceeds 5 parts by weight, the characteristic bitter taste of Andiroba seed oil may cause an unpleasant odor in the composition, and the composition becomes heavy and sticky due to excessive heavy oil components, resulting in a reduced user experience. Therefore, it is preferable to limit the content of Andiroba seed oil to 1 to 5 parts by weight, and more preferably to 2 to 4 parts by weight.

[0079] Critical Significance of Sequential Addition of Oil Components and Temperature Control

[0080] The present invention sequentially adds castor seed oil, camellia seed oil, green tea seed oil, and andiroba seed oil, and precisely controls the temperature and stirring conditions at each addition step.

[0081] Critical Significance of the Primary Emulsification Stirring Step of Castor Seed Oil:

[0082] The process of first adding castor seed oil to a silicone-based mixture and performing primary emulsification stirring at 200 to 600 RPM for 5 to 15 minutes at a temperature of 25 to 40°C is intended to form an emulsification medium layer by preferentially positioning ricinoleic acid-containing oils at the silicone-oil interface. The reason for adding castor seed oil first is to facilitate the dispersion of subsequent oils and prevent phase separation by ensuring that ricinoleic acid is oriented first at the interface between the silicone component and the subsequently added vegetable oils. If the temperature is below 25°C, the viscosity of the castor seed oil becomes excessively high, making it difficult to disperse uniformly in the silicone-based mixture; if it exceeds 40°C, unnecessary heating energy is consumed, and temperature control in subsequent processes becomes complicated. If the stirring speed is below 200 RPM, the dispersion of the castor seed oil is insufficient, and if it exceeds 600 RPM, bubbles are generated due to excessive shear force. If the stirring time is less than 5 minutes, the formation of the emulsifying medium layer is incomplete, and if it exceeds 15 minutes, only the process time increases without additional effect. Therefore, the optimal condition is to stir for 5 to 15 minutes at 200 to 600 RPM at 25 to 40℃.

[0083] Critical Significance of the Secondary Emulsification Stirring Step of Camellia Seed Oil:

[0084] The process of adding camellia seed oil to the mixture that has been stirred once and performing a second emulsification stirring at 200 RPM to 600 RPM for 5 to 20 minutes at a temperature of 25 to 40°C is intended to stably disperse the main nutritional oil components into the emulsification medium formed by the castor seed oil. Camellia seed oil is a vegetable oil used in the highest content (3 to 10 parts by weight) in the present invention and must be uniformly dispersed throughout the silicone-based mixture through sufficient stirring time. If the temperature is below 25°C, the viscosity of the camellia seed oil is high, which reduces dispersibility, and if it exceeds 40°C, the oxidation of unsaturated fatty acids contained in the camellia seed oil may be promoted. If the stirring speed is less than 200 RPM, uniform dispersion of the camellia seed oil is not achieved, and if it exceeds 600 RPM, bubbles may be generated and the emulsion structure may be destroyed due to excessive shear force. If the stirring time is less than 5 minutes, the camellia seed oil is not completely dispersed, and if it exceeds 20 minutes, only the process time increases without additional dispersion effect. Therefore, the optimal condition is to stir for 5 to 20 minutes at 200 to 600 RPM at 25 to 40℃.

[0085] Critical Significance of the Third Emulsification Stirring Step of Green Tea Seed Oil:

[0086] The process of adding green tea seed oil to the mixture that has been stirred twice and performing a third emulsification stirring at 200 to 600 RPM for 5 to 15 minutes at a temperature of 25 to 40°C is intended to stably disperse the antioxidant functional oil. Since green tea seed oil contains heat-sensitive tocopherol and polyphenol components, excessive temperature or stirring can cause loss of active ingredients. If the temperature is below 25°C, the dispersibility of the green tea seed oil decreases, and if it exceeds 40°C, thermal decomposition of the antioxidant components is accelerated. If the stirring speed is less than 200 RPM, uniform dispersion of the green tea seed oil is not achieved, and if it exceeds 600 RPM, structural damage to the antioxidant components may occur due to excessive shear force. If the stirring time is less than 5 minutes, complete dispersion of the green tea seed oil is not achieved, and if it exceeds 15 minutes, only the process time increases without an additional dispersion effect. Therefore, the optimal condition is to stir at 200 RPM to 600 RPM for 5 to 15 minutes at 25℃ to 40℃.

[0087] Critical Significance of the Fourth Emulsification Stirring Step of Andiroba Seed Oil:

[0088] The process of adding andiroba seed oil to the mixture stirred three times and performing a fourth emulsification stirring at 200 RPM to 800 RPM for 10 to 25 minutes at a temperature of 25°C to 40°C is intended to add the final oil component and complete the homogenization of the entire oil mixture. Andiroba seed oil contains limonoid compounds to provide a hair cuticle strengthening effect and, when added last, serves to integrate all the oil components. If the temperature is below 25°C, the viscosity of the andiroba seed oil increases, leading to reduced dispersibility, and if it exceeds 40°C, the stability of the limonoid compounds may decrease. If the stirring speed is below 200 RPM, uniform dispersion of the andiroba seed oil is not achieved, and if it exceeds 800 RPM, excessive shear force may cause excessive bubbles and destroy the emulsion structure. In this stage, homogenization of the entire oil component is required, so the stirring time is set longer than in other stages; if it is less than 10 minutes, complete homogenization is not achieved, and if it exceeds 25 minutes, only the process time and energy consumption increase without any additional effect. Therefore, the optimal condition is to stir for 10 to 25 minutes at 200 to 800 RPM at 25 to 40°C.

[0089] Critical Significance of the Stabilization Stirring Step:

[0090] The process of stabilizing the mixture by stirring at 100 to 500 RPM for 5 to 15 minutes while cooling the mixture to room temperature is intended to stabilize the emulsion structure and remove residual bubbles while lowering the temperature. The reason for cooling to room temperature (approximately 20–25°C) is to ensure the stability of heat-sensitive components during the subsequent extract addition step and to predict product stability under room temperature storage conditions. If the stirring speed is less than 100 RPM, temperature non-uniformity occurs during the cooling process and local viscosity variations arise; if it exceeds 500 RPM, unnecessary bubble generation and increased energy consumption occur. If the stabilization time is less than 5 minutes, sufficient cooling and stabilization are not achieved, and if it exceeds 15 minutes, only the process time increases without any additional effect. Therefore, the optimal condition is stabilizing the mixture by stirring at 100 to 500 RPM for 5 to 15 minutes while cooling to room temperature.

[0091] Technical Importance of Prioritizing Castor Seed Oil Intake:

[0092] In the present invention, adding castor seed oil before all other vegetable oils is a key strategy to ensure emulsion stability by orienting ricinoleic acid at the interface between the silicone base mixture and the vegetable oil. If castor seed oil is added simultaneously with or later with other oils, ricinoleic acid is not effectively oriented at the interface, and the silicone-oil interfacial tension remains high, causing phase separation or the aggregation of oil components. Unlike general vegetable oils (oleic acid, linoleic acid, etc.), the ricinoleic acid content (80% by weight or more) of castor seed oil has hydroxyl groups within its molecule, allowing it to interact with both polar silicon oxygen atoms and non-polar silicon methyl groups, and this amphiphilic characteristic exerts an emulsion mediating effect.

[0093] Critical Significance of Differential Temperature Dosage of Camellia Extract and Stabilization of Active Ingredients

[0094] Composition and component range of camellia extract

[0095] The present invention sequentially adds and mixes 0.1 to 3 parts by weight of camellia seed extract and 0.1 to 3 parts by weight of camellia flower extract to 100 parts by weight of the mixture of step b.

[0096] Critical significance of the content range (0.1 to 3 parts by weight) of camellia seed extract:

[0097] Camellia seed extract contains 0.5 to 5 weight percent of saponin compounds and performs the function of repairing damaged areas of the hair cuticle, reducing static electricity on the hair surface, and enhancing hair shine. If the content of camellia seed extract is less than 0.1 weight parts, the absolute amount of saponin components is insufficient, resulting in a negligible hair cuticle repair effect, an insufficient anti-static effect, and no improvement in hair shine. Conversely, if it exceeds 3 weight parts, excessive saponin components may cause foaming in the composition or increase the possibility of skin irritation; the viscosity of the composition increases excessively, leading to a decrease in usability; and the increase in cost-effectiveness is minimal, resulting in reduced economic efficiency. Furthermore, an excessive extract content may impair the stability of the silicone-oil emulsion system and cause phase separation. Therefore, it is preferable to limit the content of camellia seed extract to 0.1 to 3 weight parts, and more preferably to 0.5 to 2 weight parts.

[0098] Critical significance of the content range (0.1 to 3 parts by weight) of camellia flower extract:

[0099] Camellia flower extract contains 1 to 10 weight percent of polyphenol compounds and plays a role in preventing heat-induced hair damage, inhibiting hair color discoloration, and promoting the health of the scalp and hair through its antioxidant effect. If the content of camellia flower extract is less than 0.1 weight parts, the absolute amount of polyphenol components is insufficient, resulting in a negligible antioxidant effect; it fails to adequately prevent oxidative damage to hair proteins and lipids when using high-temperature heat styling tools, and causes hair discoloration upon long-term use. Conversely, if it exceeds 3 weight parts, the composition may brown or precipitate due to the excessive polyphenol components; the characteristic scent of camellia flowers becomes excessively strong, disrupting the balance of the product's fragrance and leading to excessive cost increases. Therefore, it is desirable to limit the content of camellia flower extract to 0.1 to 3 weight parts, and more preferably to 0.5 to 2 weight parts.

[0100] Critical Significance of Differential Temperature Addition of Camellia Extract

[0101] The present invention adopts a temperature differential strategy in which camellia seed extract is first added at a low temperature, and camellia flower extract is subsequently added at a relatively high temperature.

[0102] Critical Significance of the Stirring Step of the Primary Extract of Camellia Seed Extract:

[0103] The process of adding camellia seed extract to the mixture of step b and stirring the first extract at 10 to 25 minutes at 100 to 500 RPM at a temperature of 10 to 30°C is intended to stably disperse the saponin components at low temperatures. Although saponins are relatively stable to heat, adding them at low temperatures minimizes foaming and allows them to disperse slowly into the silicone-oil mixture, thereby improving uniformity. If the temperature is below 10°C, the viscosity of the mixture becomes excessively high, making it difficult to disperse the camellia seed extract and consuming additional energy for cooling; if it exceeds 30°C, temperature control in subsequent steps becomes complex and the tendency for saponins to foam increases. If the stirring speed is below 100 RPM, the dispersion of the camellia seed extract is insufficient, and if it exceeds 500 RPM, excessive stirring may cause foaming and accelerate the denaturation of saponins. If the stirring time is less than 10 minutes, complete dispersion of the camellia seed extract is not achieved, and if it exceeds 25 minutes, only the process time increases without additional effect. Therefore, the optimal condition is to stir for 10 to 25 minutes at 10 to 30°C at 100 to 500 RPM.

[0104] Critical Significance of the Heating Step:

[0105] The process of raising the temperature of the first extract-stirred mixture to between 20°C and 35°C is intended to establish optimal temperature conditions for the addition of camellia flower extract. By raising the temperature, the viscosity of the mixture is lowered to an appropriate level to improve the dispersibility of the camellia flower extract, while simultaneously securing a temperature range that maintains the stability of the polyphenol components. If the temperature is below 20°C, the viscosity of the mixture remains high, making it difficult to disperse the camellia flower extract; if it exceeds 35°C, the thermal decomposition of the polyphenol components begins to accelerate, reducing the antioxidant effect. Therefore, the condition of raising the temperature to between 20°C and 35°C is optimal.

[0106] Critical Significance of the Secondary Extract Stirring Step of Camellia Flower Extract:

[0107] The process of adding camellia flower extract to a heated mixture and stirring the secondary extract at 200 to 600 RPM for 15 to 30 minutes at a temperature of 20 to 40°C is intended to stably disperse polyphenol components at an appropriate temperature. Since camellia flower extract contains a high concentration of heat-sensitive polyphenol components compared to camellia seed extract, excessive temperature reduces the antioxidant effect. However, at an appropriate temperature (20 to 40°C), the solubility of polyphenols increases, improving dispersibility and allowing for uniform distribution within the silicone-oil matrix. If the temperature is below 20°C, the dispersibility of the camellia flower extract decreases and viscosity increases, making uniform mixing difficult; if the temperature exceeds 40°C, thermal decomposition of polyphenol compounds is accelerated, which reduces the antioxidant effect, causes the product's color to turn brown, and can alter its scent. If the stirring speed is less than 200 RPM, the camellia flower extract is not uniformly dispersed, and if it exceeds 600 RPM, structural damage to polyphenols may occur due to excessive shear force. If the stirring time is less than 15 minutes, the camellia flower extract is not completely dispersed, and if it exceeds 30 minutes, the exposure time to heat is prolonged, leading to increased loss of polyphenols and an unnecessary increase in process time. Therefore, the optimal condition is to stir for 15 to 30 minutes at 200 RPM to 600 RPM at 20℃ to 40℃.

[0108] Critical Significance of the Homogenization Stirring Step:

[0109] The process of homogenizing the mixture of the secondary extracts at 300 to 800 RPM for 10 to 20 minutes is intended to ensure the homogeneity of the final extract mixture containing both camellia seed extract and camellia flower extract. Through homogenizing stirring, microscopic non-uniformity is eliminated, and the extract components are evenly distributed throughout the silicone-oil matrix. If the stirring speed is less than 300 RPM, homogenization is insufficient, leaving local component variations; if it exceeds 800 RPM, excessive shear force increases the generation of foam in saponins and damage to polyphenols. If the homogenization time is less than 10 minutes, complete homogenization is not achieved; if it exceeds 20 minutes, only the process time increases without additional effects, and the loss of polyphenols due to heat increases. Therefore, the condition of homogenizing stirring at 300 to 800 RPM for 10 to 20 minutes is optimal.

[0110] Technical Importance of the Temperature Differential Input Strategy:

[0111] In the present invention, adding the camellia seed extract first at a low temperature (10 to 30°C) and subsequently adding the camellia flower extract at a relatively high temperature (20 to 40°C) is an optimization strategy that considers the physicochemical properties of the main active components (saponin vs. polyphenol) of each extract. Saponin minimizes foaming and disperses stably at low temperatures, whereas polyphenol's solubility increases at an appropriate temperature (20 to 40°C), improving dispersibility, but thermal decomposition is accelerated at high temperatures (above 40°C). If the two extracts are added simultaneously at the same temperature, the dispersibility of polyphenol decreases at low temperatures, and foaming of saponin and thermal decomposition of polyphenol occur simultaneously at high temperatures, making it impossible to obtain the optimal effect. Furthermore, by adding the camellia seed extract first, saponin disperses first in the silicone-oil matrix, allowing the polyphenol in the subsequently added camellia flower extract to interact with saponin to exert an antioxidant synergistic effect and improve the stability of the overall composition.

[0112] Critical Significance of Establishing a Dual Carrier System and the Quick-Drying, Sustained Effect

[0113] Composition and component range of carrier ingredients

[0114] The present invention sequentially adds and mixes 10 to 30 parts by weight of isododecane and 1 to 10 parts by weight of C12-15 alkylbenzoate with respect to 100 parts by weight of the mixture of step c.

[0115] Critical significance of the isododecane content range (10 to 30 parts by weight):

[0116] Isododecane is a highly volatile hydrocarbon solvent with an evaporation rate of 10 to 50 g / m²·h at 25°C; it evaporates rapidly immediately after application to the hair to form a primary quick-drying film. If the isododecane content is less than 10 parts by weight, the quick-drying effect is insufficient, causing the hair to feel wet for a long time after application, resulting in a heavy and sticky texture that consumers may avoid. Additionally, the lack of volatile solvent leads to excessively high viscosity, resulting in poor spreadability during application and difficulty in spreading it evenly over the entire hair. Conversely, if it exceeds 30 parts by weight, the excessive volatile solvent causes the product to become excessively thin, making it prone to dripping when applied to the hair. Furthermore, the amount of substantial protective components remaining on the hair surface after evaporation decreases, reducing the heat protection effect, and the evaporation process causes an excessive cooling sensation, resulting in a poor user experience. Moreover, excessive isododecane can lower the product's flash point, potentially causing safety issues. Therefore, it is preferable that the content of isododecane be limited to 10 to 30 parts by weight, and more preferably to 15 to 25 parts by weight.

[0117] Critical significance of the content range (1 to 10 parts by weight) of C12-15 alkyl benzoate:

[0118] C12-15 alkyl benzoate is a low-volatility emollient with an evaporation rate of 0.1 to 5 g / m²·h at 25°C. It remains on the hair surface for a long time after the evaporation of isododecane, forming a secondary, long-lasting film and providing moisturizing and softening effects. If the content of C12-15 alkyl benzoate is less than 1 part by weight, there is insufficient emollient component remaining on the hair surface after the evaporation of isododecane, causing the hair to become dry and stiff, the heat protection effect does not last for a long time, and the hair texture becomes rough. Conversely, if it exceeds 10 parts by weight, the hair becomes oily and heavy due to the excessive non-volatile emollient, giving a sticky feeling, and dust or contaminants easily adhere to the hair, reducing cleanliness and causing increased consumer complaints as it does not wash off easily during cleaning. Therefore, the content of C12-15 alkyl benzoate is preferably limited to 1 to 10 parts by weight, and more preferably to 2 to 7 parts by weight.

[0119] Critical Significance of Sequential Addition of Carrier Components and Double Film Formation

[0120] The present invention constructs a dual carrier system in which isododecane is first introduced to form a high-volatility carrier layer, and then C12-15 alkyl benzoate is introduced to form a low-volatility emollient layer.

[0121] Critical Significance of the Primary Carrier Stirring Step of Isododecane:

[0122] The process of adding isododecane to the mixture of step c and stirring the primary carrier at 300 RPM to 800 RPM for 5 to 15 minutes at a temperature of 15°C to 35°C is intended to uniformly disperse the highly volatile solvent into the silicone-oil-extract mixture to lower the viscosity of the overall composition and improve the applicability. Since isododecane has a very fast evaporation rate, stirring at an excessive temperature causes some of it to evaporate during stirring, reducing the amount included in the actual product and causing compositional non-uniformity. If the temperature is below 15°C, the viscosity of the mixture is high, making it difficult to disperse isododecane; if it exceeds 35°C, excessive evaporation of isododecane occurs, leading to compositional changes due to evaporation and raising safety concerns due to the excessive generation of volatile solvent vapors in the working environment. If the stirring speed is less than 300 RPM, uniform dispersion of isododecane is not achieved, and if it exceeds 800 RPM, excessive stirring promotes the evaporation of isododecane and generates bubbles. If the stirring time is less than 5 minutes, complete dispersion of isododecane is not achieved, and if it exceeds 15 minutes, losses due to evaporation increase and the process time increases unnecessarily. Therefore, the optimal condition is to stir for 5 to 15 minutes at 300 RPM to 800 RPM at 15℃ to 35℃.

[0123] Critical Significance of the Stabilization Stirring Step:

[0124] The process of stabilizing and stirring the primary carrier-stirred mixture at 200 RPM to 600 RPM for 3 to 10 minutes while raising the temperature to 20°C to 40°C is intended to control the temperature of the mixture in which isododecane is dispersed to provide optimal conditions for the subsequent addition of C12-15 alkyl benzoate. By raising the temperature, the viscosity of the mixture is lowered to an appropriate level to improve the dispersibility of C12-15 alkyl benzoate. If the temperature is below 20°C, the viscosity of the mixture remains high, making it difficult to disperse C12-15 alkyl benzoate; if it exceeds 40°C, excessive evaporation of isododecane occurs, and the loss of heat-sensitive extract components increases. If the stirring speed is below 200 RPM, temperature non-uniformity occurs, and if it exceeds 600 RPM, the evaporation of volatile components is accelerated due to excessive stirring. If the stabilization time is less than 3 minutes, sufficient temperature equilibrium is not achieved, and if it exceeds 10 minutes, the evaporation loss of volatile components increases. Therefore, the optimal condition is to stabilize and stir at 200 RPM to 600 RPM for 3 to 10 minutes while raising the temperature to 20℃ to 40℃.

[0125] Critical significance of the secondary carrier stirring step of C12-15 alkyl benzoate:

[0126] The process of adding C12-15 alkyl benzoate to a stabilized stirred mixture and performing secondary carrier stirring at 300 RPM to 700 RPM for 10 to 20 minutes at a temperature of 20°C to 40°C is intended to uniformly disperse low-volatility emollient components to complete a dual carrier system. Since the evaporation rate of C12-15 alkyl benzoate is very slow, approximately 1 / 100th the level of isododecane, after application to hair, isododecane evaporates first to form a primary film, while C12-15 alkyl benzoate remains on the hair surface for a long time to form a secondary film. If the temperature is below 20°C, the viscosity of C12-15 alkyl benzoate is high, making dispersion difficult; if it exceeds 40°C, unnecessary energy consumption increases and the loss of heat-sensitive components increases. If the stirring speed is less than 300 RPM, uniform dispersion of C12-15 alkyl benzoate is not achieved, and if it exceeds 700 RPM, bubbles are generated due to excessive shear force and excessive energy is consumed. If the stirring time is less than 10 minutes, complete dispersion of C12-15 alkyl benzoate is not achieved, and if it exceeds 20 minutes, only the process time increases without additional effect. Therefore, the optimal condition is to stir for 10 to 20 minutes at 300 RPM to 700 RPM at 20℃ to 40℃.

[0127] Critical Significance of the Homogenization, Stirring, and Cooling Steps:

[0128] The process of homogenizing the secondary carrier-stirred mixture at 400 RPM to 1,000 RPM for 10 to 25 minutes while cooling it to room temperature is intended to ensure the homogeneity of the final carrier mixture containing both isododecane and C12-15 alkyl benzoate, and to verify the final stability of the product by cooling it to room temperature. Cooling to room temperature (approx. 20–25°C) is intended to verify stability by simulating actual product storage and usage conditions, and to prevent the loss of heat-sensitive components when subsequently adding tocopherol and flavorings. If the stirring speed is less than 400 RPM, homogenization is insufficient and temperature non-uniformity occurs during the cooling process; if it exceeds 1,000 RPM, excessive stirring causes bubbles to form and accelerates the evaporation of volatile components. If the homogenization time is less than 10 minutes, complete homogenization and cooling do not occur, and if it exceeds 25 minutes, only the process time increases without additional effects, and the evaporation loss of volatile components increases. Therefore, the optimal condition is to homogenize and stir at 400 RPM to 1,000 RPM for 10 to 25 minutes while cooling to room temperature.

[0129] Technical Importance of Dual Carrier Systems:

[0130] In the present invention, constructing a dual carrier system by combining isododecane (evaporation rate 10 to 50 g / m²·h) and C12-15 alkyl benzoate (evaporation rate 0.1 to 5 g / m²·h) is a key strategy to simultaneously satisfy the conflicting requirements of initial feel and long-term efficacy. Isododecane evaporates mostly within 1 to 3 minutes immediately after application to the hair, providing a rapid drying sensation to the hair, a feeling of the product being absorbed into the hair, and a pleasant initial feel that is not beta-sticky. At the same time, C12-15 alkyl benzoate remains on the hair surface for several hours, providing continuous moisturizing, softening, and heat protection effects, giving the hair a natural shine, and protecting the hair from the external environment (humidity, dust, etc.). If only isododecane is used, the initial feel is excellent, but the hair becomes dry after evaporation and the protective effect is minimal; if only C12-15 alkyl benzoate is used, the long-term efficacy is excellent, but the initial feel is heavy and sticky, leading to reduced consumer satisfaction. The dual carrier system strategically utilizes the difference in evaporation rates between the two ingredients to induce the sequential formation of a primary fast-drying film followed by a secondary long-lasting film over time, thereby achieving both initial comfort and long-term protection simultaneously.

[0131] Critical Significance of Tocopherol and Flavor Addition

[0132] Composition and ingredient range of tocopherol and flavorings

[0133] The present invention prepares a final mixture by adding 0.01 to 1 part by weight of tocopherol and 0.01 to 2 parts by weight of flavoring to 100 parts by weight of the mixture of step d.

[0134] Critical significance of the tocopherol content range (0.01 to 1 weight part):

[0135] Tocopherol (Vitamin E) is a powerful antioxidant that prevents the oxidation of unsaturated fatty acids (camellia seed oil, green tea seed oil, etc.) and extract components within the composition, enhances the storage stability of the product, and provides antioxidant effects on hair and scalp. If the tocopherol content is less than 0.01 parts by weight, the antioxidant effect is insufficient, leading to oxidation of unsaturated fatty acids during product storage, resulting in rancid odor, discoloration of the product, reduced efficacy of active ingredients, and a shortened shelf life. Conversely, if it exceeds 1 part by weight, the excessive tocopherol causes a peculiar odor in the composition, distorts the scent of the fragrance, causes the product to brown, increases costs excessively, and the excess tocopherol may act as a pro-oxidant. Therefore, it is preferable to limit the tocopherol content to 0.01 to 1 part by weight, and more preferably to 0.05 to 0.5 parts by weight.

[0136] Critical significance of the fragrance content range (0.01 to 2 parts by weight):

[0137] Fragrances serve to enhance consumer satisfaction by imparting a pleasant scent to the product and to mask the characteristic odors of the raw materials. If the fragrance content is less than 0.01 parts by weight, the scent is too weak to provide a pleasant scent experience when using the product, and the characteristic odors of raw materials such as camellia seed oil, castor seed oil, and andiroba seed oil are still perceived, leading to reduced consumer satisfaction. Conversely, if it exceeds 2 parts by weight, the scent is excessively strong, which may cause headaches or discomfort and irritate consumers with sensitive scalps; furthermore, the risk of allergic reactions caused by fragrance components (citronellol, geraniol, limonene, linalool, etc.) increases, and costs increase excessively. Therefore, it is desirable to limit the fragrance content to 0.01 to 2 parts by weight, and more preferably to 0.1 to 1 part by weight.

[0138] Critical Significance of the Final Addition of Tocopherol and Flavorings

[0139] In the present invention, adding tocopherol and fragrance at the final stage after all other ingredients have been added and mixed is intended to minimize the loss of these heat-sensitive ingredients, prevent the volatilization of the fragrance, and optimize the final quality of the product.

[0140] Tocopherol is sensitive to heat, and its efficacy decreases when exposed to temperatures above 40°C for a long time due to oxidation. If tocopherol is added at the initial stage, the loss of tocopherol increases as the exposure time to heat and oxygen is prolonged during the stirring and heating processes of the subsequent process. By adding it at the final stage, the heat exposure time of tocopherol is minimized, and maximum antioxidant efficacy is preserved.

[0141] Fragrances are mostly composed of volatile components, and in particular, fragrance ingredients such as citronellol, limonene, and linalool have high vapor pressures, causing them to evaporate easily during heating and stirring processes. If fragrances are added during the initial or intermediate stages, a significant portion of the components evaporates during the subsequent heating and stirring processes, weakening the scent of the final product and disrupting the intended fragrance balance. By adding the fragrance at the final stage and performing only minimal stirring, volatile loss is minimized, allowing consumers to experience a sufficiently strong and balanced scent when using the product.

[0142] In addition, adding tocopherol and flavorings simultaneously at the final stage simplifies the process, shortens manufacturing time, and reduces energy consumption. Since these ingredients are all added in small amounts and are added to a main mixture that is already homogeneously mixed, they are sufficiently and uniformly dispersed with only short stirring.

[0143] Critical Significance of the Final Mixing Condition:

[0144] After adding tocopherol and flavoring, the mixture is gently stirred at room temperature at 100 to 300 RPM for 3 to 10 minutes to ensure uniform dispersion. If the stirring speed is less than 100 RPM, the tocopherol and flavoring are not uniformly dispersed, and localized concentration variations occur; if the stirring speed exceeds 300 RPM, excessive stirring increases the volatilization of the flavoring and generates unnecessary bubbles. If the stirring time is less than 3 minutes, complete dispersion is not achieved, and if it exceeds 10 minutes, the volatilization loss of the flavoring increases and the process time increases unnecessarily. Therefore, stirring at room temperature at 100 to 300 RPM for 3 to 10 minutes is the optimal condition.

[0145] Integrated criticality of the entire manufacturing process

[0146] In the manufacturing method of the present invention, each step is organically connected, and the order of input of each component, input temperature, stirring speed, and stirring time are all optimized.

[0147] If the order of ingredient addition is changed (e.g., adding camellia seed oil before castor seed oil), emulsion stability decreases and phase separation occurs.

[0148] If temperature conditions are changed (e.g., Camellia flower extract is added at 40℃ or higher), thermal decomposition of polyphenol components occurs, reducing the antioxidant effect.

[0149] If the stirring speed is changed (e.g., stirring at less than 200 RPM when adding dimethicone), uniform dispersion is not achieved, resulting in uneven product quality.

[0150] If the stirring time is changed (e.g., stirring for less than 10 minutes after adding Andiroba seed oil), complete emulsification is not achieved, and phase separation occurs during storage.

[0151] Therefore, the range of ingredients, the order of addition, the temperature conditions, the stirring speed, and the stirring time at each stage of the present invention all have critical significance, and by adhering to these, a high-quality hair composition that simultaneously exhibits four effects—protection against heat damage, hair gloss, hair volume, and improvement of split ends—can be reproducibly manufactured.

[0152] Examples and Comparative Examples

[0153] Example 1

[0154] Composition and manufacturing method of Example 1

[0155] Example 1 is an example in which the basic composition of the present invention is implemented as an intermediate value.

[0156] Step a: Preparation of silicone-based mixture

[0157] 40 parts by weight of cyclopentasiloxane were added to a reaction vessel and stirred at 300 RPM at 25°C for 5 minutes. Then, 15 parts by weight of dimethicone (viscosity 350 cSt) were added and stirred at 500 RPM at 25°C for 10 minutes to form an intermediate silicon mixture. 10 parts by weight of cyclohexasiloxane were added to the intermediate silicon mixture and stirred at 1,000 RPM at 25°C for 20 minutes, followed by homogenization at 1,200 RPM for 10 minutes to prepare a silicon base mixture.

[0158] Step b: Sequential addition of oil mixture

[0159] To 100 parts by weight of the above silicone base mixture, 3 parts by weight of castor seed oil (ricinoleic acid content 85 wt%) was added and first emulsification stirring was performed at 400 RPM for 10 minutes at 30°C. Next, 6 parts by weight of camellia seed oil were added and second emulsification stirring was performed at 500 RPM for 12 minutes at 35°C. Subsequently, 3 parts by weight of green tea seed oil were added and third emulsification stirring was performed at 500 RPM for 8 minutes at 35°C. Finally, 3 parts by weight of andiroba seed oil were added and fourth emulsification stirring was performed at 600 RPM for 15 minutes at 35°C, followed by stabilization stirring at 300 RPM for 10 minutes while cooling to room temperature (22°C).

[0160] Step c: Differential temperature input of camellia extract

[0161] For 100 parts by weight of the mixture from step b above, 1.5 parts by weight of camellia seed extract (saponin content 2.5 wt%) was added, and the first extract was stirred at 300 RPM for 15 minutes at 20℃. After raising the temperature of the mixture to 28℃, 1.5 parts by weight of camellia flower extract (polyphenol content 5 wt%) was added, and the second extract was stirred at 400 RPM for 20 minutes at 30℃. Subsequently, homogenization stirring was performed at 500 RPM for 15 minutes.

[0162] Step d: Construction of a dual carrier system

[0163] To 100 parts by weight of the mixture of step c above, 20 parts by weight of isododecane (evaporation rate 30 g / m²·h at 25℃) was added and primary carrier stirring was performed at 500 RPM for 10 minutes at 25℃. The mixture was then heated to 30℃ and stabilized by stirring at 400 RPM for 5 minutes. Subsequently, 5 parts by weight of C12-15 alkyl benzoate (evaporation rate 2 g / m²·h at 25℃) were added and secondary carrier stirring was performed at 500 RPM for 15 minutes at 30℃, followed by homogenization stirring at 700 RPM for 15 minutes while cooling to room temperature (22℃).

[0164] Step e: Final addition of tocopherol and flavorings

[0165] To 100 parts by weight of the mixture of step d above, 0.5 parts by weight of tocopherol and 0.5 parts by weight of a flavoring (mixture of citronellol, geraniol, limonene, and linalool) were added, and the mixture was stirred at 200 RPM for 5 minutes at 22°C to prepare the final composition.

[0166] Example 2

[0167] Composition and manufacturing method of Example 2

[0168] Example 2 is an example implemented near the minimum value of the composition range of the present invention.

[0169] Step a: Preparation of silicone-based mixture

[0170] 32 parts by weight of cyclopentasiloxane were added to a reaction vessel and stirred at 150 RPM at 22°C for 4 minutes. Then, 11 parts by weight of dimethicone (viscosity 200 cSt) were added and stirred at 250 RPM at 22°C for 6 minutes to form an intermediate silicon mixture. 6 parts by weight of cyclohexasiloxane were added to the intermediate silicon mixture and stirred at 600 RPM at 22°C for 12 minutes, followed by homogenization at 700 RPM for 6 minutes to prepare a silicon base mixture.

[0171] Step b: Sequential addition of oil mixture

[0172] To 100 parts by weight of the above silicone base mixture, 1.5 parts by weight of castor seed oil (ricinoleic acid content 82 wt%) was added and first emulsification stirring was performed at 250 RPM for 6 minutes at 27°C. Next, 3.5 parts by weight of camellia seed oil were added and second emulsification stirring was performed at 300 RPM for 7 minutes at 30°C. Subsequently, 1.5 parts by weight of green tea seed oil were added and third emulsification stirring was performed at 300 RPM for 6 minutes at 30°C. Finally, 1.5 parts by weight of andiroba seed oil were added and fourth emulsification stirring was performed at 350 RPM for 12 minutes at 32°C, followed by stabilization stirring at 200 RPM for 8 minutes while cooling to room temperature (21°C).

[0173] Step c: Differential temperature input of camellia extract

[0174] For 100 parts by weight of the mixture from step b above, 0.3 parts by weight of camellia seed extract (saponin content 1 wt%) was added, and the first extract was stirred at 150 RPM for 12 minutes at 15℃. After raising the temperature of the mixture to 23℃, 0.3 parts by weight of camellia flower extract (polyphenol content 2 wt%) was added, and the second extract was stirred at 250 RPM for 17 minutes at 25℃. Subsequently, homogenization stirring was performed at 350 RPM for 12 minutes.

[0175] Step d: Construction of a dual carrier system

[0176] To 100 parts by weight of the mixture of step c above, 12 parts by weight of isododecane (evaporation rate 15 g / m²·h at 25℃) was added and primary carrier stirring was performed at 350 RPM for 7 minutes at 18℃. The mixture was then heated to 23℃ and stabilized by stirring at 250 RPM for 4 minutes. Subsequently, 2 parts by weight of C12-15 alkyl benzoate (evaporation rate 0.5 g / m²·h at 25℃) were added and secondary carrier stirring was performed at 350 RPM for 12 minutes at 25℃, followed by homogenization stirring at 500 RPM for 12 minutes while cooling to room temperature (21℃).

[0177] Step e: Final addition of tocopherol and flavorings

[0178] To 100 parts by weight of the mixture of step d above, 0.05 parts by weight of tocopherol and 0.1 parts by weight of flavoring were added, and the mixture was stirred at 150 RPM for 4 minutes at 21°C to prepare the final composition.

[0179] Example 3

[0180] Composition and manufacturing method of Example 3

[0181] Example 3 is an example implemented near the maximum value of the composition range of the present invention.

[0182] Step a: Preparation of silicone-based mixture

[0183] 48 parts by weight of cyclopentasiloxane were added to a reaction vessel and stirred at 450 RPM at 28°C for 8 minutes. Then, 19 parts by weight of dimethicone (viscosity 800 cSt) were added and stirred at 750 RPM at 28°C for 13 minutes to form an intermediate silicon mixture. 14 parts by weight of cyclohexasiloxane were added to the intermediate silicon mixture and stirred at 1,400 RPM at 28°C for 28 minutes, followed by homogenization at 1,800 RPM for 13 minutes to prepare a silicon base mixture.

[0184] Step b: Sequential addition of oil mixture

[0185] To 100 parts by weight of the above silicone base mixture, 4.5 parts by weight of castor seed oil (ricinoleic acid content 88 wt%) was added and first emulsification stirring was performed at 550 RPM for 13 minutes at 38°C. Next, 9 parts by weight of camellia seed oil were added and second emulsification stirring was performed at 580 RPM for 18 minutes at 38°C. Subsequently, 4.5 parts by weight of green tea seed oil were added and third emulsification stirring was performed at 580 RPM for 13 minutes at 38°C. Finally, 4.5 parts by weight of andiroba seed oil were added and fourth emulsification stirring was performed at 750 RPM for 23 minutes at 38°C, followed by stabilization stirring at 450 RPM for 13 minutes while cooling to room temperature (23°C).

[0186] Step c: Differential temperature input of camellia extract

[0187] For 100 parts by weight of the mixture from step b above, 2.7 parts by weight of camellia seed extract (saponin content 4.5 wt%) was added, and the first extract was stirred at 450 RPM for 23 minutes at 28℃. After raising the temperature of the mixture to 33℃, 2.7 parts by weight of camellia flower extract (polyphenol content 9 wt%) was added, and the second extract was stirred at 580 RPM for 28 minutes at 38℃. Subsequently, homogenization stirring was performed at 750 RPM for 18 minutes.

[0188] Step d: Construction of a dual carrier system

[0189] To 100 parts by weight of the mixture of step c above, 28 parts by weight of isododecane (evaporation rate 45 g / m²·h at 25℃) was added and primary carrier stirring was performed at 750 RPM for 13 minutes at 33℃. The mixture was then heated to 38℃ and stabilized by stirring at 550 RPM for 9 minutes. Subsequently, 9 parts by weight of C12-15 alkyl benzoate (evaporation rate 4.5 g / m²·h at 25℃) were added and secondary carrier stirring was performed at 650 RPM for 18 minutes at 38℃, followed by homogenization stirring at 950 RPM for 23 minutes while cooling to room temperature (23℃).

[0190] Step e: Final addition of tocopherol and flavorings

[0191] To 100 parts by weight of the mixture of step d above, 0.9 parts by weight of tocopherol and 1.8 parts by weight of flavoring were added and stirred at 280 RPM for 9 minutes at 23°C to prepare the final composition.

[0192] Example 4

[0193] Composition and manufacturing method of Example 4

[0194] Example 4 is an example to verify the effect of gradually increasing the stirring speed during the manufacture of a silicon base.

[0195] The same composition as in Example 1 was used, but the stirring speed was increased more finely in steps when preparing the silicon base mixture in step a.

[0196] 40 parts by weight of cyclopentasiloxane were stirred at 200 RPM for 5 minutes at 25°C, then 15 parts by weight of dimethicone were added, and the stirring speed was sequentially increased to 300 RPM for 3 minutes, 500 RPM for 3 minutes, and 700 RPM for 4 minutes. Subsequently, 10 parts by weight of cyclohexasiloxane were added, and the stirring speed was sequentially increased to 800 RPM for 5 minutes, 1,000 RPM for 7 minutes, and 1,200 RPM for 8 minutes, followed by homogenization at 1,500 RPM for 10 minutes. Steps b through e were then carried out in the same manner as in Example 1.

[0197] Example 5

[0198] Composition and manufacturing method of Example 5

[0199] Example 5 is an example to verify the sequential order of oil component addition and the emulsifying mediating effect of castor seed oil.

[0200] The same composition as in Example 1 was used, but castor seed oil was added first during the oil addition in step b, and sufficient emulsification stirring time was secured after each oil addition.

[0201] 3 parts by weight of castor seed oil were added to 100 parts by weight of a silicone base mixture and sufficiently emulsified and stirred at 400 RPM at 30°C for 15 minutes to ensure that ricinoleic acid was stably oriented at the silicone-oil interface. Subsequently, 6 parts by weight of camellia seed oil were added and stirred at 500 RPM at 35°C for 15 minutes to stably disperse it in the emulsified medium formed by the castor seed oil. Next, 3 parts by weight of green tea seed oil were added and stirred at 500 RPM at 35°C for 10 minutes, and 3 parts by weight of andiroba seed oil were added and stirred at 600 RPM at 35°C for 20 minutes, after which the mixture was cooled to room temperature and stabilized by stirring at 300 RPM for 15 minutes. Steps c through e were then carried out in the same manner as in Example 1.

[0202] Example 6

[0203] Composition and manufacturing method of Example 6

[0204] Example 6 is an example to confirm the temperature differential input effect of camellia extract.

[0205] The same composition as in Example 1 was used, but the temperature difference was set more clearly when adding the extract in step c.

[0206] 1.5 parts by weight of camellia seed extract were added to 100 parts by weight of the mixture from step b. The mixture was cooled to 12°C and stirred sufficiently at a low temperature at 150 RPM for 20 minutes to ensure stable dispersion of the saponin components and minimize foaming. Subsequently, the mixture was gradually heated to 35°C, 1.5 parts by weight of camellia flower extract were added, and the mixture was stirred at 450 RPM at 35°C for 25 minutes to ensure uniform dispersion of the polyphenol components, as their solubility increases at the appropriate temperature. Then, homogenization stirring was performed at 550 RPM for 18 minutes. Steps d and e were then carried out in the same manner as in Example 1.

[0207] Example 7

[0208] Composition and manufacturing method of Example 7

[0209] Example 7 is an example to verify the effect of the difference in evaporation rates of a dual carrier system.

[0210] The same composition as in Example 1 was used, but the difference in evaporation rates between isododecane and C12-15 alkyl benzoate was maximized when the carrier was added in step d.

[0211] 20 parts by weight of isododecane (evaporation rate 48 g / m²·h at 25°C) was added to 100 parts by weight of the mixture from step c, and the mixture was stirred at 550 RPM at 20°C for 10 minutes to maintain a low temperature so that the highly volatile components did not evaporate excessively. After stabilizing the mixture by stirring at 350 RPM for 5 minutes while raising the temperature to 25°C, 5 parts by weight of C12-15 alkyl benzoate (evaporation rate 0.2 g / m²·h at 25°C) were added, and the mixture was stirred at 500 RPM at 28°C for 18 minutes to ensure that the low-volatility emollient was sufficiently dispersed. Subsequently, the mixture was homogenized by stirring at 750 RPM for 20 minutes while cooling to room temperature. Step e was carried out in the same manner as in Example 1.

[0212] Example 8

[0213] Composition and manufacturing method of Example 8

[0214] Example 8 is an example to confirm the final effect of adding tocopherol and flavoring.

[0215] The same composition as in Example 1 was used, but heat exposure was minimized when adding tocopherol and flavoring in step e.

[0216] After confirming that the mixture of step d had completely cooled to room temperature (20°C), 0.5 parts by weight of tocopherol and 0.5 parts by weight of flavoring were added simultaneously and gently stirred at 150 RPM at 20°C for only 3 minutes to minimize thermal oxidation of tocopherol and volatilization of flavoring. Immediately after stirring was completed, the mixture was filled into a container.

[0217] Comparative Example 1

[0218] Composition and manufacturing method of Comparative Example 1

[0219] Comparative Example 1 is an example of a case where the content of cyclopentasiloxane is excessively high.

[0220] A silicone base mixture was prepared by mixing 60 parts by weight of cyclopentasiloxane, 8 parts by weight of dimethicone, and 3 parts by weight of cyclohexasiloxane. Subsequently, 3 parts by weight of castor seed oil, 6 parts by weight of camellia seed oil, 3 parts by weight of green tea seed oil, and 3 parts by weight of andiroba seed oil were sequentially added to 100 parts by weight of the silicone base mixture. In step c, 1.5 parts by weight of camellia seed extract and 1.5 parts by weight of camellia flower extract were added; in step d, 20 parts by weight of isododecane and 5 parts by weight of C12-15 alkyl benzoate were added; and in step e, 0.5 parts by weight of tocopherol and 0.5 parts by weight of fragrance were added. The stirring conditions for each step were applied in the same manner as in Example 1.

[0221] In Comparative Example 1, the content of cyclopentasiloxane exceeds 50 parts by weight and the content of dimethicone is less than 10 parts by weight, so the composition becomes excessively diluted, making it easy to run off when applied to hair, and the thickness of the substantial protective film remaining on the hair surface after volatilization becomes thin, which is expected to cause a problem of reduced heat protection effect.

[0222] Comparative Example 2

[0223] Composition and manufacturing method of Comparative Example 2

[0224] Comparative Example 2 is an example of a case where the vegetable oil content is excessively high.

[0225] A silicone base mixture was prepared by mixing 40 parts by weight of cyclopentasiloxane, 15 parts by weight of dimethicone, and 10 parts by weight of cyclohexasiloxane. Subsequently, 7 parts by weight of castor seed oil, 15 parts by weight of camellia seed oil, 7 parts by weight of green tea seed oil, and 7 parts by weight of andiroba seed oil were sequentially added to 100 parts by weight of the silicone base mixture. In step c, 1.5 parts by weight of camellia seed extract and 1.5 parts by weight of camellia flower extract were added; in step d, 20 parts by weight of isododecane and 5 parts by weight of C12-15 alkyl benzoate were added; and in step e, 0.5 parts by weight of tocopherol and 0.5 parts by weight of fragrance were added. The stirring conditions for each step were applied in the same manner as in Example 1.

[0226] In Comparative Example 2, castor seed oil exceeds 5 parts by weight, camellia seed oil exceeds 10 parts by weight, and green tea seed oil and andiroba seed oil each exceed 5 parts by weight; therefore, due to the excessive oil components, the composition is too heavy and sticky, and it is expected that the hair will be coated with excessive oil, resulting in reduced volume and drooping hair.

[0227] Comparative Example 3

[0228] Composition and manufacturing method of Comparative Example 3

[0229] Comparative Example 3 is an example of a case where the order of adding oil components was changed.

[0230] The same composition as in Example 1 was used, but the order of oil addition in step b was changed to camellia seed oil → green tea seed oil → andiroba seed oil → castor seed oil.

[0231] First, 6 parts by weight of camellia seed oil were added to 100 parts by weight of a silicone base mixture and stirred at 400 RPM at 30°C for 10 minutes. Next, 3 parts by weight of green tea seed oil were added and stirred at 500 RPM at 35°C for 8 minutes. Subsequently, 3 parts by weight of andiroba seed oil were added and stirred at 600 RPM at 35°C for 15 minutes. Finally, 3 parts by weight of castor seed oil were added and stirred at 400 RPM at 35°C for 10 minutes, after which it was cooled to room temperature. Steps c through e were then carried out in the same manner as in Example 1.

[0232] In Comparative Example 3, castor seed oil is added last, so ricinoleic acid is not effectively oriented at the silicone-oil interface, which is expected to result in reduced emulsion stability and phase separation during storage.

[0233] Comparative Example 4

[0234] Composition and manufacturing method of Comparative Example 4

[0235] Comparative Example 4 is an example of a case where the temperature conditions are inappropriate when adding the extract.

[0236] The same composition as in Example 1 was used, but in step c, both the camellia seed extract and the camellia flower extract were added at a high temperature of 45℃.

[0237] After heating 100 parts by weight of the mixture from step b to 45°C, 1.5 parts by weight of camellia seed extract were added and stirred at 300 RPM at 45°C for 15 minutes. Subsequently, 1.5 parts by weight of camellia flower extract were added and stirred at 400 RPM at 45°C for 20 minutes. Then, homogenization stirring was performed at 500 RPM for 15 minutes. Steps d and e were then carried out in the same manner as in Example 1.

[0238] In Comparative Example 4, the camellia flower extract is added at a temperature exceeding 40℃, which promotes the thermal decomposition of polyphenol components, so a problem is expected where the antioxidant effect is reduced and the color of the product turns brown.

[0239] Comparative Example 5

[0240] Composition and manufacturing method of Comparative Example 5

[0241] Comparative Example 5 is an example of a case where the stirring speed is inappropriate.

[0242] The same composition as in Example 1 was used, but the stirring speed was fixed at 50 RPM at all steps.

[0243] 40 parts by weight of cyclopentasiloxane were stirred at 50 RPM for 5 minutes, and 15 parts by weight of dimethicone were added and stirred at 50 RPM for 10 minutes. 10 parts by weight of cyclohexasiloxane were added and stirred at 50 RPM for 20 minutes. Subsequently, the stirring speed was fixed at 50 RPM for all steps b, c, d, and e.

[0244] In Comparative Example 5, the stirring speed is excessively low at less than 100 RPM, so uniform dispersion of each component is not achieved, and thus problems are expected such as poor homogeneity of the final composition and local variation in components.

[0245] Comparative Example 6

[0246] Composition and manufacturing method of Comparative Example 6

[0247] Comparative Example 6 is an example of a case where the homogenization step is omitted.

[0248] The same composition as in Example 1 was used, but the homogenization stirring step of each step was omitted.

[0249] In step a, after adding cyclohexasiloxane, stirring was performed at 1,000 RPM for 20 minutes, but the homogenization step was omitted. In step c, after adding camellia flower extract, stirring was performed at 400 RPM for 20 minutes, but the homogenization step was omitted. In step d, after adding C12-15 alkyl benzoate, stirring was performed at 500 RPM for 15 minutes, but the homogenization and cooling steps were omitted. Other conditions were carried out in the same manner as in Example 1.

[0250] In Comparative Example 6, the homogenization step is omitted, so microscopic non-uniformity remains, which is expected to lead to reduced product stability and phase separation during storage.

[0251] Comparative Example 7

[0252] Composition and manufacturing method of Comparative Example 7

[0253] Comparative Example 7 is an example of a case in which the composition of the prior art, Korean Patent Publication No. 10-2022-0128048, is imitated.

[0254] A silicone base mixture was prepared by mixing 45 parts by weight of cyclopentasiloxane, 12 parts by weight of dimethicone, and 8 parts by weight of cyclohexasiloxane. Subsequently, 25 parts by weight of isododecane, 7 parts by weight of C12-15 alkyl benzoate, and 5 parts by weight of caprylic / capric triglyceride were simultaneously added to 100 parts by weight of the silicone base mixture, and the mixture was stirred at 500 RPM for 20 minutes at 25°C. 0.3 parts by weight of tocopherol and 0.5 parts by weight of fragrance were added, and the mixture was stirred at 200 RPM for 5 minutes to prepare the final composition.

[0255] Comparative Example 7 does not contain a triple complex derived from camellia (camellia seed oil, camellia seed extract, camellia flower extract), lacks the emulsifying mediating effect of castor seed oil, and does not provide sequential addition of ingredients or temperature control, so it is expected that the multifunctional effects of heat damage protection, hair gloss, volume, and improvement of split ends will be limited.

[0256] Composition of Examples 1 to 8 and Comparative Examples 1 to 7 Ingredients (parts by weight) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 silicone base Cyclopentasiloxane 40 32 48 40 40 40 40 40 60 40 40 40 40 40 45 Dimethicon 15 11 19 15 15 15 15 15 8 15 15 15 15 15 12 Cyclohexasiloxane 10 6 14 10 10 10 10 10 3 10 10 10 10 10 8 Vegetable oil? (based on 100 parts by weight of silicone base) Castor seed oil 3 1.5 4.5 3 3 3 3 3 3 7 3 3 3 3 - Camellia seed oil 6 3.5 9 6 6 6 6 6 6 15 6 6 6 6 - Green tea seed oil 3 1.5 4.5 3 3 3 3 3 3 7 3 3 3 3 - Andiroba seed oil 3 1.5 4.5 3 3 3 3 3 3 7 3 3 3 3 - Caprylic / Capric Triglyceride - - - - - - - - - - - - - - 5 Extract? (based on 100 parts by weight of step b mixture) Camellia seed extract 1.5 0.3 2.7 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 - Camellia flower extract 1.5 0.3 2.7 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 - Carrier? (per 100 parts by weight of step c mixture) Isododecane 20 12 28 20 20 20 20 20 20 20 20 20 20 20 25 C12-15 alkyl benzoate 5 2 9 5 5 5 5 5 5 5 5 5 5 5 7 Others? (Based on 100 parts by weight of the mixture in step d) Tocopherol 0.5 0.05 0.9 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.3 spices 0.5 0.1 1.8 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

[0257] Analysis of Examples and Comparative Examples

[0258] Analysis of Examples 1 to 3

[0259] Example 1 is a basic example in which each component of the present invention is formulated at the median value of the composition range, and the balance between the components is excellent and all process conditions are optimized. Example 2 is an example in which each component is formulated near the minimum value of the composition range, providing a relatively light feel while exhibiting essential heat protection and hair improvement effects. Example 3 is an example in which each component is formulated near the maximum value of the composition range, providing enhanced heat protection and nutrient supply effects, but the feel may be somewhat heavy.

[0260] Through a comparison of Examples 1 to 3, it can be confirmed that the balance of usability and efficacy can be optimized by adjusting the component content within the compositional range of the present invention. In particular, the range of 30 to 50 parts by weight of cyclopentasiloxane and 10 to 20 parts by weight of dimethicone is essential for achieving a balance of applicability and film formation, while the range of 3 to 10 parts by weight of camellia seed oil and 0.1 to 3 parts by weight of extract each is important for preventing stickiness while providing nutrition and antioxidant effects.

[0261] Analysis of Example 4

[0262] Example 4 maximizes the effect of each silicone component forming a layered structure according to viscosity by finely increasing the stirring speed during the preparation of a silicone base from 200 RPM → 300 RPM → 500 RPM → 700 RPM → 800 RPM → 1,000 RPM → 1,200 RPM → 1,500 RPM. This demonstrates that the stepwise increase in stirring speed is important for achieving complete homogenization while minimizing bubble generation.

[0263] Analysis of Example 5

[0264] Example 5 maximizes the effect of ricinoleic acid being stably oriented at the silicone-oil interface by adding castor seed oil first and ensuring a sufficient emulsification stirring time (15 minutes). This demonstrates that the priority addition of castor seed oil is essential for ensuring emulsion stability.

[0265] Analysis of Example 6

[0266] Example 6 maximizes the effect of a temperature differential strategy that considers the difference in physicochemical properties between saponins and polyphenols by adding camellia seed extract at a low temperature of 12°C and adding camellia flower extract at a relatively high temperature of 35°C. This demonstrates that temperature differential addition of extracts is important for ensuring the stability of active ingredients.

[0267] Analysis of Example 7

[0268] Example 7 clarifies the temporal separation effect between the primary fast-drying film and the secondary long-lasting film by maximizing the difference in evaporation rates (240-fold difference) between isododecane (evaporation rate 48 g / m²·h) and C12-15 alkyl benzoate (evaporation rate 0.2 g / m²·h). This demonstrates that the difference in evaporation rates in a dual carrier system is important for the simultaneous achievement of initial usability and long-term efficacy.

[0269] Analysis of Example 8

[0270] Example 8 maximizes the effect of minimizing the loss of heat-sensitive ingredients by adding tocopherol and flavoring with only minimal stirring (150 RPM, 3 minutes) in a completely cooled state (20°C). This demonstrates that the final addition of tocopherol and flavoring and minimal stirring are important for maintaining product quality.

[0271] Analysis of Comparative Example 1

[0272] Comparative Example 1 has a cyclopentasiloxane content of 60 parts by weight, which exceeds 50 parts by weight, and a dimethicone content of 8 parts by weight, which is less than 10 parts by weight. This causes problems such as the composition becoming excessively diluted, the protective film remaining on the hair surface after volatilization becoming thin, and the heat protection effect being reduced. In addition, the relatively low dimethicone content results in reduced film strength and a negligible improvement in hair gloss.

[0273] Analysis of Comparative Example 2

[0274] Comparative Example 2 contains an upper limit for the content of all vegetable oils. Due to 7 parts by weight of castor seed oil (exceeding 5 parts by weight), 15 parts by weight of camellia seed oil (exceeding 10 parts by weight), and 7 parts by weight each of green tea seed oil and andiroba seed oil (exceeding 5 parts by weight), the composition becomes excessively heavy and sticky, and the hair is coated with excessive oil, resulting in reduced volume and limp hair. In addition, the excessive oil content can disrupt the balance of the silicone-oil emulsion system and cause phase separation.

[0275] Analysis of Comparative Example 3

[0276] Comparative Example 3 changes the order of oil addition so that castor seed oil is added last. This prevents ricinoleic acid from being effectively oriented at the silicone-oil interface, causing problems such as camellia seed oil, green tea seed oil, and andiroba seed oil not being uniformly dispersed in the silicone base, resulting in localized aggregation or phase separation. This conversely proves that the highest priority addition of castor seed oil is essential for ensuring emulsion stability.

[0277] Analysis of Comparative Example 4

[0278] Comparative Example 4 involves adding both camellia seed extract and camellia flower extract at a high temperature of 45°C. In particular, if the camellia flower extract is added at a temperature exceeding 40°C, thermal decomposition of polyphenol compounds is accelerated, resulting in a decrease in antioxidant effect, browning of the product's color, and deterioration of its scent. This demonstrates that a strategy of adding extracts at different temperatures is essential for preserving active ingredients.

[0279] Analysis of Comparative Example 5

[0280] Comparative Example 5 fixes the stirring speed at 50 RPM at all stages. This is a stirring speed of less than 100 RPM, which results in uneven dispersion of each component and causes the silicone component, oil component, extract component, and carrier component to be locally unevenly distributed, leading to poor homogeneity of the final composition. This demonstrates the importance of an appropriate stirring speed at each stage.

[0281] Analysis of Comparative Example 6

[0282] Comparative Example 6 omits homogenization stirring at each step. The homogenization step serves to remove even minute-scale non-uniformity after the addition of each component; omitting this step results in component variations remaining in the product, causing phase separation during storage and a failure to provide consistent effects during use. This demonstrates that the homogenization step is essential for ensuring product stability and quality uniformity.

[0283] Analysis of Comparative Example 7

[0284] Comparative Example 7 is a prior art composition that does not include a triple complex derived from camellia, lacks the emulsifying mediating effect of castor seed oil, and does not involve sequential addition of ingredients or temperature control. Compared to the present invention, this has the problem of having a limited heat damage protection effect and failing to simultaneously achieve multifunctional effects such as hair gloss, volume, and improvement of split ends.

[0285] Experimental Example 1: Evaluation of Thermal Damage Protection Effect

[0286] Test method

[0287] To evaluate the heat damage protection effect of the compositions prepared in Examples 1 to 8 and Comparative Examples 1 to 7, the same method as the human application test report (KC-251210-C2) was applied.

[0288] Test subjects

[0289] Twenty-one healthy adult women were assigned to each experimental group. The subjects' hair types were standardized to hair with moderate damage and a history of dyeing or perming.

[0290] Test Procedure

[0291] After washing the subjects' hair with shampoo and air-drying it, three hair regions on the occipital area were selected. Region 1 was designated as the untreated control group, Region 2 as the group treated with the test composition alone, and Region 3 as the group treated with the test composition followed by heat treatment with a hair iron (180°C) for 15 seconds. The test composition was applied uniformly at a rate of 0.1g per 1g of hair.

[0292] Measurement items

[0293] The surface roughness of the hair cuticle was observed at 3,000x magnification using a scanning electron microscope (SEM, Hitachi S-4300), and the surface roughness index was calculated using image analysis software (Image J). The heat damage protection effect was calculated using the following formula.

[0294] Thermal Damage Protection Rate (%) = [(Untreated Thermal Damage - Thermal Damage after Test Sample Treatment) / Untreated Thermal Damage] × 100

[0295] Here, heat damage is defined by the hair cuticle surface roughness index, and a higher value indicates more severe cuticle damage.

[0296] Statistical analysis

[0297] All measurements were expressed as mean ± standard deviation, and a paired-samples t-test was performed using SPSS Statistics 23.0. The significance level was set at p<0.05.

[0298] Experimental Example 2: Evaluation of Hair Gloss Improvement Effect

[0299] Test method

[0300] To evaluate the hair gloss improvement effect of the compositions prepared in Examples 1 to 8 and Comparative Examples 1 to 7, the same method as the human application test report (KC-251210-C2) was applied.

[0301] Test subjects and procedures

[0302] The same subjects and hair areas as in Experimental Example 1 were used.

[0303] Measurement items

[0304] Hair photographs were taken using a DSLR camera (Canon EOS 5D Mark IV) and a standardized lighting system (Philips TL84 light source). The shooting conditions were fixed at ISO 400, a shutter speed of 1 / 125 second, and an aperture of f / 5.6. The captured images were analyzed using the I-MAX PLUS analysis program to measure the average pixel brightness value of the hair surface. The hair gloss improvement rate was calculated using the following formula.

[0305] Hair Gloss Improvement Rate (%) = [(Pixel Brightness After Processing - Pixel Brightness Before Processing) / Pixel Brightness Before Processing] × 100

[0306] Statistical analysis

[0307] Statistical analysis was performed using the same method as in Experimental Example 1.

[0308] Experimental Example 3: Evaluation of Hair Volume Increase Effect

[0309] Test method

[0310] To evaluate the hair volume-increasing effect of the compositions prepared in Examples 1 to 8 and Comparative Examples 1 to 7, the same method as the human application test report (KC-251210-C2) was applied.

[0311] Test subjects and procedures

[0312] The same subjects and hair areas as in Experimental Example 1 were used.

[0313] Measurement items

[0314] Hair bundles were photographed from the side using a DSLR camera, and the height of the hair bundles was measured in pixels using the I-MAX PLUS analysis program. The hair volume increase rate was calculated using the following formula.

[0315] Hair Volume Increase Rate (%) = [(Hair Height After Treatment - Hair Height Before Treatment) / Hair Height Before Treatment] × 100

[0316] Statistical analysis

[0317] Statistical analysis was performed using the same method as in Experimental Example 1.

[0318] Experimental Example 4: Evaluation of the effect on improving split ends

[0319] Test method

[0320] To evaluate the split hair improvement effect of the compositions prepared in Examples 1 to 8 and Comparative Examples 1 to 7, the same method as the human application test report (KC-251210-C2) was applied.

[0321] Test subjects and procedures

[0322] The same subjects and hair areas as in Experimental Example 1 were used, but the area within 3 cm from the end of the hair was observed intensively.

[0323] Measurement items

[0324] The degree of split ends at the hair tips was observed at 500x magnification using a scanning electron microscope (SEM, Hitachi S-4300), and evaluated by two independent evaluators using a 5-grade scale (0: no split ends, 1: mild split ends, 2: moderate split ends, 3: severe split ends, 4: very severe split ends). The split hair improvement rate was calculated using the following formula.

[0325] Split Hair Improvement Rate (%) = [(Split Score Before Treatment - Split Score After Treatment) / Split Score Before Treatment] × 100

[0326] Statistical analysis

[0327] Statistical analysis was performed using the same method as in Experimental Example 1.

[0328] Experimental Example 5: Product Stability Evaluation

[0329] Test method

[0330] An accelerated stability test was conducted to evaluate the storage stability of the compositions prepared in Examples 1 to 8 and Comparative Examples 1 to 7.

[0331] Test conditions

[0332] The prepared composition was filled into a transparent glass container and stored under the following conditions.

[0333] Room temperature storage: 25℃, relative humidity 60%, 3 months

[0334] High temperature storage: 40℃, relative humidity 75%, 3 months

[0335] Cold and hot cycles: 4℃ for 24 hours → 40℃ for 24 hours, repeat 30 times

[0336] Measurement items

[0337] The following items were evaluated at 0, 1, 2, and 3 months during the storage period.

[0338] Changes in appearance: Phase separation, sediment formation, and color change observed visually.

[0339] pH change: Measured with a pH meter (Mettler Toledo SevenCompact)

[0340] Viscosity change: Measured at 25°C using a viscometer (Brookfield DV-E Viscometer).

[0341] Aroma Change: Sensory evaluation by 5 panelists using a 5-point scale

[0342] Judgment criteria

[0343] It was determined to be stable if all of the following criteria were satisfied.

[0344] No phase separation

[0345] No precipitate formation

[0346] Color change ΔE < 3.0

[0347] pH change within ± 0.5

[0348] Viscosity change within ± 20%

[0349] Scent change, grade change, 1 or less

[0350] Experimental Example 6: Evaluation of Usability

[0351] Test method

[0352] A consumer sensory evaluation was conducted to evaluate the usability of the compositions prepared in Examples 1 to 8 and Comparative Examples 1 to 7.

[0353] Test subjects

[0354] The study was conducted on 30 healthy adult women.

[0355] Test Procedure

[0356] Each composition was provided to the subjects in a blind manner, and after applying it directly to their hair, they were asked to evaluate the following items on a 5-point scale (1: very poor, 2: poor, 3: average, 4: good, 5: very good).

[0357] Evaluation items

[0358] Spreadability upon application

[0359] absorption after application

[0360] Stickiness level (inverse score)

[0361] Weight (inverse score)

[0362] Scent pleasantness

[0363] Overall satisfaction

[0364] Statistical analysis

[0365] All measurements were expressed as mean ± standard deviation, and one-way analysis of variance (ANOVA) and Duncan's multiple comparisons were performed. The significance level was set at p<0.05.

[0366] Experimental Example 7: Analysis of Effects According to Changes in Component Content

[0367] Test method

[0368] Additional examples were prepared by gradually changing the content of specific components based on Example 1, and the effects were evaluated using the methods of Experimental Examples 1 to 4.

[0369] Example 9: Change in Cyclopentasiloxane Content

[0370] The cyclopentasiloxane content was varied to 25 parts by weight (less than the lower limit), 30 parts by weight (lower limit), 40 parts by weight (middle), 50 parts by weight (upper limit), and 55 parts by weight (greater than the upper limit), while other components were maintained the same as in Example 1.

[0371] Example 10: Change in Camellia Seed Oil Content

[0372] The content of camellia seed oil was varied to 2 parts by weight (less than the lower limit), 3 parts by weight (lower limit), 6 parts by weight (middle), 10 parts by weight (upper limit), and 12 parts by weight (more than the upper limit), while other components were maintained the same as in Example 1.

[0373] Example 11: Change in castor seed oil content

[0374] The castor seed oil content was varied to 0.5 parts by weight (less than the lower limit), 1 part by weight (lower limit), 3 parts by weight (middle), 5 parts by weight (upper limit), and 7 parts by weight (more than the upper limit), while other components were maintained the same as in Example 1.

[0375] Example 12: Change in Camellia Flower Extract Content

[0376] The content of camellia flower extract was varied to 0.05 parts by weight (less than the lower limit), 0.1 parts by weight (lower limit), 1.5 parts by weight (middle), 3 parts by weight (upper limit), and 4 parts by weight (more than the upper limit), while other components were maintained the same as in Example 1.

[0377] Example 13: Change in Isododecane Content

[0378] The isododecane content was varied to 8 parts by weight (less than the lower limit), 10 parts by weight (lower limit), 20 parts by weight (middle), 30 parts by weight (upper limit), and 35 parts by weight (greater than the upper limit), while other components were maintained the same as in Example 1.

[0379] For each example, the heat damage protection effect, hair gloss, hair volume, improvement of split ends, stability, and usability were evaluated using the methods of Experimental Examples 1 to 6, and the effect of the content range of each ingredient on the effect and stability was analyzed.

[0380] Composition of Examples 9 to 13 Change in ingredient content Below the lower limit lower limit middle maximum Exceeding the upper limit Example 9: Cyclopentasiloxane (parts by weight) 25 30 40 50 55 Example 10: Camellia seed oil (parts by weight) 2 3 6 10 12 Example 11: Castor seed oil (parts by weight) 0.5 1 3 5 7 Example 12: Camellia flower extract (parts by weight) 0.05 0.1 1.5 3 4 Example 13: Isododecane (parts by weight) 8 10 20 30 35

[0381] Note: In each example, only the content of the ingredients specified in the table was changed, and all other ingredients and manufacturing conditions were kept the same as in Example 1.

[0382] Results and Discussion

[0383] Experimental Example 1: Results and Discussion on Thermal Damage Protection Effect

[0384] Comparison of thermal damage protection effects of Examples 1 to 3

[0385] As a result of evaluating the thermal damage protection effect for Examples 1 to 3, Example 1 showed an additional thermal damage protection effect of 10.4% compared to the untreated control group, Example 2 showed an additional thermal damage protection effect of 8.7%, and Example 3 showed an additional thermal damage protection effect of 12.1%. This demonstrates that all of them exhibit excellent thermal damage protection effects even when the component content is adjusted within the compositional range of the present invention.

[0386] The reason why Example 3 exhibited a higher heat damage protection effect than Examples 1 and 2 is analyzed as follows. Example 3 contains 48 parts by weight of cyclopentasiloxane, 19 parts by weight of dimethicone, and 14 parts by weight of cyclohexasiloxane, with the silicone base content being near the maximum value. In particular, the high content of dimethicone (19 parts by weight) results in a thick and dense protective film formed on the hair surface, providing excellent heat transfer blocking effects. Additionally, since the content of the camellia-derived triple complex (9 parts by weight of camellia seed oil, 2.7 parts by weight of camellia seed extract, and 2.7 parts by weight of camellia flower extract) is near the maximum value, it is determined that the nutritional supply and reinforcement effects on the hair cuticle were maximized, thereby improving the hair's resistance to heat.

[0387] Example 2 showed a slightly lower heat damage protection effect than Example 1, but still exhibited a significant effect of 8.7%. Although Example 2 has a relatively light composition as each component is blended near the minimum value, it is judged that excellent heat protection effect was achieved because the silicone base of 32 parts by weight of cyclopentasiloxane, 11 parts by weight of dimethicone, and 6 parts by weight of cyclohexasiloxane still forms an effective protective film, and the emulsifying mediating effect of 1.5 parts by weight of castor seed oil and the synergistic effect of the camellia-derived component are exhibited.

[0388] Process optimization effects of Examples 4 to 8

[0389] Example 4 is an example in which the stirring speed was increased more finely and stepwise during the preparation of the silicone base, and the heat damage protection effect was 10.8%, which is slightly improved compared to Example 1 (10.4%). This is analyzed to be because the fine stepwise increase in stirring speed more precisely controlled the formation of the layered structure of each silicone component, thereby improving the uniformity and adhesion of the protective film formed on the hair surface. In particular, SEM observation confirmed that a film with a fine layered structure was uniformly distributed on the cuticle surface of the hair treated with Example 4, which suggests that the sequential arrangement of low-viscosity, medium-viscosity, and high-viscosity silicones was effectively achieved.

[0390] Example 5 is an example in which castor seed oil was added first and sufficient emulsification stirring time was secured, showing a heat damage protection effect of 10.6%, which is similar to that of Example 1. This indicates that although the emulsification stirring time of castor seed oil was extended from 10 minutes to 15 minutes to allow ricinoleic acid to be more stably oriented at the silicone-oil interface, there was no significant difference in the final heat damage protection effect. However, in the stability evaluation, no phase separation was observed in Example 5 even after storage for 3 months, confirming that the emulsification stability was superior to that of Example 1.

[0391] Example 6 is an example that maximized the temperature differential input effect of camellia extract, and the heat damage protection effect was improved to 10.9% compared to Example 1. By inputting camellia seed extract at a low temperature of 12℃ and camellia flower extract at 35℃, the saponin and polyphenol components were stably dispersed under optimal temperature conditions, respectively, minimizing the loss of active ingredients, which is analyzed to have led to an improvement in hair cuticle reinforcement and antioxidant effects.

[0392] Example 7 is an example in which the difference in evaporation rates of a dual carrier system was maximized, and the thermal damage protection effect was 10.5%, which is similar to that of Example 1. It was confirmed that the maximization of the difference in evaporation rates between isododecane and C12-15 alkylbenzoate mainly contributed to the improvement of usability and did not have a significant effect on the thermal damage protection effect itself.

[0393] Example 8 is an example in which tocopherol and fragrance were added with minimal stirring while in a completely cooled state, and the heat damage protection effect was 10.3%, which is almost the same level as Example 1. It is determined that the antioxidant effect of tocopherol mainly contributes to product storage stability and has a limited effect on the immediate heat damage protection effect after a single application.

[0394] Analysis of the results of Comparative Examples 1 to 7

[0395] Comparative Example 1 is a case where the cyclopentasiloxane content is excessive and the dimethicone content is insufficient, and the heat damage protection effect was 6.2%, which is significantly lower than that of Example 1 (10.4%). SEM observation revealed that only a very thin and uneven film was observed on the cuticle surface of the hair treated with Comparative Example 1, indicating that the formation of a substantial protective film was insufficient due to the excessive volatile components. Additionally, Comparative Example 1 was prone to dripping during application, making it difficult to apply uniformly to the entire hair, which is believed to have caused the unevenness of the heat damage protection effect.

[0396] Comparative Example 2 is a case where the vegetable oil content is excessive, and the heat damage protection effect was 9.8%, which was slightly lower than that of Example 1. It is analyzed that due to the excessive oil component, the viscosity of the composition became excessively high, making it difficult to spread evenly on the hair surface, and in some areas, an excessive film was formed, which actually limited the effect of hindering heat transfer. In addition, the excessive oil component made the hair heavy, resulting in a side effect of reduced volume.

[0397] Comparative Example 3 is a case where the order of oil addition was changed so that castor seed oil was added last, and the heat damage protection effect was 8.9%, which was lower than that of Example 1. It is determined that the emulsifying mediating effect of castor seed oil was not sufficiently expressed, so the vegetable oil components were not uniformly dispersed in the silicone base, which led to a decrease in the uniformity of the protective film and a reduction in the heat damage protection effect. In addition, in the stability evaluation, it was observed that fine oil droplets floated to the surface of Comparative Example 3 after storage for one month, confirming that the emulsification stability was poor.

[0398] Comparative Example 4 is a case where all extracts were added at a high temperature of 45°C, and the heat damage protection effect was 9.1%, which was lower than that of Example 1. In particular, the polyphenol components of the camellia flower extract were partially thermally decomposed at high temperatures, which reduced the antioxidant effect; this is analyzed to have led to a decrease in the effect of preventing oxidative damage to the hair cuticle caused by heat. Additionally, in Comparative Example 4, a slight browning phenomenon was observed immediately after preparation, suggesting that thermal decomposition of polyphenols occurred.

[0399] Comparative Example 5 is a case where the stirring speed was excessively low at 50 RPM at all stages, and the heat damage protection effect was 7.5%, which was significantly lower than that of Example 1. Due to insufficient stirring, the components were not uniformly dispersed, resulting in local variations in the components within the composition. Furthermore, when applied to hair, an uneven film was formed, and it was confirmed that there was almost no heat protection effect in some areas. SEM observation revealed that in the hair treated with Comparative Example 5, areas with and without a film were mixed.

[0400] Comparative Example 6 is a case where the homogenization step was omitted, and the thermal damage protection effect was 9.3%, which was slightly lower than that of Example 1. Although the micro-non-uniformity caused by the omission of the homogenization step did not significantly affect the thermal damage protection effect, phase separation was observed after 2 months of storage in the stability evaluation, confirming that the long-term stability of the product was poor.

[0401] Comparative Example 7 is a prior art composition that does not include components derived from camellia, and the heat damage protection effect was 5.8%, which is only half the level of Example 1 (10.4%). This clearly demonstrates that the triple complex of camellia seed oil, camellia seed extract, and camellia flower extract plays a key role in the heat damage protection effect. It can be seen that without components derived from camellia, sufficient heat protection cannot be achieved solely through the physical barrier effect of the silicone film, and that excellent heat damage protection is manifested only when the nourishment, reinforcement, and antioxidant effects of the hair cuticle are combined.

[0402] Comprehensive Analysis

[0403] Synthesizing the results of Experimental Example 1, Examples 1 to 8 of the present invention all exhibited an excellent heat damage protection effect of 8.7% or more, and in particular, Examples 3, 4, and 6 showed a very excellent effect of 10.8% to 12.1%. On the other hand, Comparative Examples 1 to 7 showed a relatively low effect of 5.8% to 9.8%, proving that the compositional range, manufacturing process conditions, and the order of ingredient addition of the present invention are essential for achieving the heat damage protection effect. In particular, the inclusion of a camellia-derived triple complex (Example 1 vs. Comparative Example 7) had the greatest influence on the heat damage protection effect, and it was confirmed that maintaining an appropriate range of ingredient content (Example 1 vs. Comparative Examples 1 and 2), the highest priority addition of castor seed oil (Example 1 vs. Comparative Example 3), temperature control of the extract (Example 1 vs. Comparative Example 4), and appropriate stirring conditions (Example 1 vs. Comparative Example 5) were all important.

[0404] Experimental Example 2: Results and Discussion on the Effect of Improving Hair Gloss

[0405] Comparison of hair gloss improvement effects of Examples 1 to 3

[0406] As a result of evaluating the hair gloss improvement effect for Examples 1 to 3, Example 1 showed a gloss improvement effect of 21.5%, Example 2 showed a gloss improvement effect of 18.3%, and Example 3 showed a gloss improvement effect of 24.7%. This demonstrates that all of them exhibit an excellent hair gloss improvement effect even when the component content is adjusted within the compositional range of the present invention.

[0407] The reason Example 3 exhibited the highest gloss improvement effect is analyzed as follows. Since Example 3 contains 19 parts by weight of dimethicone, the content of high-viscosity silicone is near the maximum value; consequently, the film formed on the hair surface is thick and smooth, increasing the specular reflectance of light and enhancing gloss. Additionally, since the content of camellia seed oil is 9 parts by weight, which is near the maximum value, it is determined that the oleic acid-rich camellia seed oil fills damaged areas of the hair cuticle and smooths the surface, thereby reducing light scattering and increasing specular reflection. Furthermore, since the content of C12-15 alkyl benzoate is 9 parts by weight, which is near the maximum value, it is analyzed that the low-volatility emollient remains on the hair surface for a long time, providing a continuous gloss effect.

[0408] Example 2 showed a slightly lower gloss improvement effect than Example 1, but still exhibited a significant effect of 18.3%. Although Example 2 had a relatively thin film thickness because each component was formulated near the minimum value, it is judged that the combination of the silicone base and camellia seed oil still smoothed the hair surface, thereby achieving an excellent gloss effect.

[0409] Process optimization effects of Examples 4 to 8

[0410] Example 4 is an example in which the stirring speed was increased in fine steps, and the gloss improvement effect was improved to 22.3%, compared to Example 1 (21.5%). This is analyzed to be because fine control of the stirring speed more precisely controls the formation of the layered structure of the silicone component, thereby improving the smoothness of the film formed on the hair surface. When fine irregularities on the film surface are reduced, the specular reflectance of light increases, thereby improving gloss.

[0411] Example 5 is an example in which the emulsification stirring time of castor seed oil was extended, and the gloss improvement effect was 21.8%, which is similar to the level of Example 1. It was confirmed that the improvement in the emulsification stability of castor seed oil does not have a direct effect on the gloss effect.

[0412] Example 6 is an example in which the differential temperature input of the extract was optimized, and the gloss improvement effect was 21.9%, which is similar to that of Example 1. It is determined that temperature control of the extract mainly contributes to the stability of the active ingredient and has a limited effect on the gloss effect.

[0413] Example 7 is an example of optimizing a dual carrier system, showing a gloss improvement effect of 21.7%, which is similar to that of Example 1. It was confirmed that the difference in evaporation rates between isododecane and C12-15 alkyl benzoate mainly affects the feel of use, and has no significant effect on the gloss effect itself.

[0414] Example 8 is an example in which tocopherol and fragrance were added after cooling, and the gloss improvement effect was 21.4%, which is almost the same level as Example 1.

[0415] Analysis of the results of Comparative Examples 1 to 7

[0416] Comparative Example 1 showed a gloss improvement effect of 12.8% due to an excess of cyclopentasiloxane and a deficiency of dimethicone, which was significantly lower than Example 1 (21.5%). It is analyzed that the gloss effect was limited because the film remaining on the hair surface after evaporation was thin due to the excessive volatile components.

[0417] Comparative Example 2 showed a gloss improvement effect of 19.4% due to an excess of vegetable oil, which was slightly lower than Example 1. It is believed that the excessive oil component formed an excessive oil film on the surface of the hair, which actually increased light scattering and caused dust or contaminants to easily adhere, resulting in a decrease in gloss.

[0418] Comparative Example 3 showed a gloss improvement effect of 18.7% due to a change in the order of oil addition, which was lower than Example 1. It is analyzed that the uniformity of the film formed on the hair surface was reduced because the oil components were not uniformly dispersed due to the decrease in emulsion stability, which led to non-uniformity of gloss.

[0419] Comparative Example 4 showed a gloss improvement effect of 19.8% due to the high-temperature input of the extract, which was slightly lower than Example 1. The browning phenomenon caused by the thermal decomposition of polyphenols changed the color of the product, causing a slight change in tone when applied to hair, and it is judged that this had a negative effect on the perception of visual gloss.

[0420] Comparative Example 5 showed a gloss improvement effect of 15.3%, which was significantly lower than Example 1 due to insufficient stirring speed. It is analyzed that the overall average gloss value was measured to be low because, due to the formation of a non-uniform film, gloss was excellent in some areas but poor in others.

[0421] Comparative Example 6 showed a gloss improvement effect of 20.1% due to the omission of homogenization, which is similar to the level of Example 1. It was confirmed that the homogenization step does not have a significant effect on the gloss effect.

[0422] Comparative Example 7, which did not contain ingredients derived from camellia, showed a gloss improvement effect of 11.5%, which is only half the level of Example 1 (21.5%). This clearly demonstrates that camellia seed oil plays a key role in improving hair gloss. The oleic acid component of camellia seed oil effectively fills damaged areas of the hair cuticle and smooths the surface to improve gloss, and it is judged that this effect is difficult to achieve with a general silicone film alone.

[0423] Comprehensive Analysis

[0424] Synthesizing the results of Experimental Example 2, Examples 1 to 8 of the present invention all showed an excellent hair gloss improvement effect of 18.3% or more, and in particular, Examples 3 and 4 showed a very excellent effect of 22.3% to 24.7%. On the other hand, Comparative Examples 1 to 7 showed a relatively low effect of 11.5% to 20.1%, proving that the composition of the present invention is excellent for improving hair gloss. In particular, the content of dimethicone and camellia seed oil had the greatest influence on the gloss effect, and it was confirmed that the inclusion of camellia-derived components improved the gloss effect by about twofold.

[0425] Experimental Example 3: Results and Discussion on the Effect of Increasing Hair Volume

[0426] Comparison of hair volume increase effects of Examples 1 to 3

[0427] As a result of evaluating the hair volume increase effect for Examples 1 to 3, Example 1 showed a volume increase effect of 4.2%, Example 2 showed a volume increase effect of 5.1%, and Example 3 showed a volume increase effect of 3.5%. This shows that the volume effect varies depending on the ingredient content.

[0428] Interestingly, Example 2 exhibited the highest volume-increasing effect, which is analyzed as follows. Since Example 2 has an overall light composition with each ingredient blended near its minimum value, it is judged that it was able to maintain the elasticity and volume of the hair itself by forming an appropriate film without giving the hair excessive weight. In particular, it is analyzed that the natural volume was maintained because the total content of vegetable oil was low at 8 parts by weight, so the hair did not feel greasy or heavy.

[0429] Example 3 had a relatively heavy composition with each component blended near its maximum value, so the hair volume increase effect was the lowest at 3.5%. It is judged that the total content of vegetable oil was high at 22.5 parts by weight, which coated the hair with excessive oil, making the hair feel somewhat heavy, and this led to a decrease in volume. However, since Example 3 still showed a volume increase effect of 3.5%, it can be confirmed that no excessive volume reduction occurs within the compositional range of the present invention.

[0430] Process optimization effects of Examples 4 to 8

[0431] Examples 4 to 8 all showed a similar volume increase effect of 4.0 to 4.5%, confirming that process optimization does not have a significant impact on the volume effect. The volume effect is mainly related to the overall weight of the composition, and it is determined that if the component content is the same, the influence of differences in manufacturing process conditions on the volume is limited.

[0432] Analysis of the results of Comparative Examples 1 to 7

[0433] Comparative Example 1 showed a volume increase effect of 6.3% due to an excess of cyclopentasiloxane, which was actually higher than Example 1 (4.2%). This is analyzed to be because the hair remained light due to the low amount of residue remaining on the hair surface after evaporation caused by the excessive volatile components. However, this is not desirable as it is accompanied by a decrease in the heat protection effect.

[0434] Comparative Example 2 showed a volume increase effect of 1.8% due to an excess of vegetable oil, which was significantly lower than Example 1 (4.2%). It was confirmed that the volume was significantly reduced because the hair became heavy and limp due to the excessive oil content. This demonstrates that limiting the vegetable oil content to within the range of the present invention (1 to 5 parts by weight of castor seed oil, 3 to 10 parts by weight of camellia seed oil, etc.) is important for maintaining volume.

[0435] Comparative Examples 3 to 6 all showed a similar volume increase effect of 3.8 to 4.3%, confirming that the order of oil addition, extract temperature, stirring speed, and homogenization status did not significantly affect the volume effect.

[0436] Comparative Example 7, which did not contain ingredients derived from camellia, showed a volume increase effect of 3.9%, which is similar to Example 1 (4.2%). The volume effect is mainly related to the overall weight of the composition, and it is judged that the influence of whether or not ingredients derived from camellia are included on the volume is limited.

[0437] Comprehensive Analysis

[0438] Synthesizing the results of Experimental Example 3, it was confirmed that the hair volume effect is mainly related to the overall weight of the composition, particularly the total content of vegetable oil, and that it is important to formulate it within an appropriate range. Examples 1 to 8 of the present invention all exhibited a volume increase effect of 3.5 to 5.1%, proving that hair volume can be adequately maintained while providing heat protection and gloss improvement effects. In particular, a relatively light composition like Example 2 showed an excellent volume increase effect, but the heat protection effect was somewhat low; therefore, considering the overall balance, the composition of Example 1 is judged to be the most balanced.

[0439] Experimental Example 4: Results and Discussion on the Effect of Improving Split Hair

[0440] Comparison of split hair improvement effects of Examples 1–3

[0441] As a result of evaluating the split hair improvement effect for Examples 1 to 3, Example 1 showed an improvement effect of 7.5%, Example 2 showed an improvement effect of 5.8%, and Example 3 showed an improvement effect of 9.2%. This shows that the effect of improving split hair improves as the ingredient content increases.

[0442] The reason Example 3 showed the highest split hair improvement effect is analyzed as follows. Since Example 3 contains 9 parts by weight of camellia seed oil and 4.5 parts by weight of andiroba seed oil, the content of nourishing oils is near the maximum value; therefore, it is determined that the effect of supplying sufficient nutrition to the damaged cuticles at the ends of the hair and filling in the damaged areas was maximized. In addition, it is analyzed that the high content of 19 parts by weight of dimethicone provides an excellent effect in preventing further splitting by coating the split ends of the hair.

[0443] Example 2 was formulated with each ingredient at a value near the minimum, so the split hair improvement effect was relatively low at 5.8%, but still showed a significant improvement effect.

[0444] Process optimization effects of Examples 4 to 8

[0445] Examples 4 to 8 all showed similar split hair improvement effects of 7.2 to 7.8%, confirming that process optimization does not significantly affect the split hair improvement effect. Split hair improvement is mainly related to the content of nourishing oil and silicone film, and it is determined that the effect of differences in manufacturing process conditions is limited when the ingredient content is the same.

[0446] Analysis of the results of Comparative Examples 1 to 7

[0447] Comparative Example 1 showed a significantly lower improvement effect on split hair due to a lack of dimethicone (4.2%) compared to Example 1 (7.5%). It is analyzed that the split ends of the hair were not effectively coated because the formation of the dimethicone film was insufficient.

[0448] Comparative Example 2 showed an improvement effect of 8.9% in split hair caused by excessive vegetable oil, which was actually higher than Example 1. It is judged that the excessive oil component had the effect of sufficiently filling in the split hair areas. However, this is not desirable as it is accompanied by side effects such as reduced volume and stickiness.

[0449] Comparative Examples 3 to 6 all showed a similar split hair improvement effect of 6.8 to 7.3%, confirming that the order of oil addition, extract temperature, stirring speed, and homogenization status did not significantly affect the split hair improvement effect.

[0450] Comparative Example 7, which did not contain ingredients derived from camellia, showed a split hair improvement effect of 3.8%, which is only half the level of Example 1 (7.5%). This demonstrates that the combination of camellia seed oil and andiroba seed oil plays an important role in improving split hair.

[0451] Comprehensive Analysis

[0452] Synthesizing the results of Experimental Example 4, the split hair improvement effect is mainly related to the content of dimethicone, camellia seed oil, and andiroba seed oil, and Examples 1 to 8 of the present invention all showed an improvement effect of 5.8 to 9.2%, proving that they provide excellent split hair improvement effects. In particular, it was confirmed that the inclusion of camellia-derived ingredients improves the split hair improvement effect by about twofold.

[0453] Experimental Example 5: Results and Discussion on Product Stability

[0454] Comparison of stability of Examples 1 to 3

[0455] As a result of accelerated stability tests for Examples 1 to 3, the products maintained a stable state for 3 months under all three conditions (room temperature storage, high temperature storage, and repeated cooling and heating) without phase separation, precipitation, color change (ΔE < 1.5), pH change (within ± 0.2), viscosity change (within ± 10%), or scent change (grade change 0). This demonstrates that all products manufactured within the compositional range of the present invention exhibit excellent storage stability.

[0456] Comparison of stability of Examples 4 to 8

[0457] Example 4 exhibited the same level of stability as Example 1. In Example 5, the emulsion stability was further improved by extending the emulsion stirring time of the castor seed oil, and no phase separation was observed even in the repeated hot and cold tests. Examples 6 to 8 all exhibited a level of stability similar to Example 1.

[0458] Stability analysis of Comparative Examples 1 to 7

[0459] Comparative Example 1 was stable at room temperature and high temperature storage, but fine phase separation was observed after 20 repetitions in the cold-temperature cycle test. This is believed to be due to a compositional imbalance caused by an excess of cyclopentasiloxane, which reduced stability against temperature changes.

[0460] Comparative Example 2 was stable at room temperature, but its viscosity increased by about 25% after 2 months of high-temperature storage, and phase separation was observed after 15 repetitions of the cold-hot cycle test. This is analyzed to be caused by the instability of the emulsion system due to excessive vegetable oil.

[0461] In Comparative Example 3, fine oil droplets were observed floating on the surface starting from one month after storage at room temperature, and phase separation clearly occurred during high-temperature storage and repeated cold-temperature tests. This is believed to be due to the fact that the emulsifying mediating effect was not sufficiently expressed because the castor seed oil was added last.

[0462] In Comparative Example 4, a slight browning phenomenon was observed immediately after preparation, and the color change (ΔE = 4.2) exceeded the standard after 3 months of high-temperature storage. This is analyzed to be due to the polyphenol components of the camellia flower extract being thermally decomposed when introduced at high temperatures, and continuous oxidation proceeding during storage.

[0463] In Comparative Example 5, non-uniformity in viscosity was observed during storage at room temperature and high temperature, and it was confirmed that parts with different viscosities were mixed when the container was shaken. This suggests that variations in composition caused by insufficient stirring persisted even during storage.

[0464] In Comparative Example 6, fine phase separation was observed starting from 2 months of storage at room temperature, and clear phase separation occurred during high-temperature storage and repeated cold-and-hot tests. This is analyzed to be due to fine non-uniformity caused by the omission of the homogenization step developing into phase separation during storage.

[0465] Comparative Example 7 maintained a stable state for 3 months under all conditions of room temperature, high temperature, and repeated cold and cold cycles. The emulsion stability of the prior art composition was also confirmed to be excellent.

[0466] Comprehensive Analysis

[0467] Synthesizing the results of Experimental Example 5, Examples 1 to 8 of the present invention all exhibited excellent storage stability, and Example 5, in particular, showed even better emulsion stability. Comparative Examples 1 to 6 exhibited various stability issues, proving that the compositional range of the present invention, the priority addition of castor seed oil, temperature control of the extract, appropriate stirring conditions, and the homogenization step are all important for ensuring product stability. In particular, the phase separation phenomenon in Comparative Example 3 (change in the order of castor seed oil addition) and Comparative Example 6 (omission of homogenization) clearly demonstrates that the manufacturing process of the present invention is essential for ensuring stability.

[0468] Experimental Example 6: Results and Discussion on User Sensibility

[0469] Comparison of usage sensations of Examples 1 to 3

[0470] As a result of consumer sensory evaluation for Examples 1 to 3, Example 1 received an excellent rating of an average of 4.2 to 4.5 points in all evaluation categories (spreadability upon application, absorption after application, degree of stickiness, weight, pleasantness of scent, and overall satisfaction). Example 2 received a better rating than Example 1 for spreadability upon application (4.6 points) and weight (4.7 points, lightness as it is an inverse score), but the absorption after application (3.8 points) was rated somewhat lower. Example 3 had excellent absorption after application (4.3 points), but the degree of stickiness (3.5 points, somewhat sticky as it is an inverse score) and weight (3.6 points, somewhat heavy as it is an inverse score) were rated lower than Example 1.

[0471] This shows that a relatively light composition, such as in Example 2, has excellent spreadability and a light feel but lacks some moisturizing effect, while a relatively heavy composition, such as in Example 3, has excellent moisturizing effect but causes stickiness and heaviness. Example 1 is in the middle of the two extremes and received a balanced evaluation in all feel categories, resulting in the highest overall satisfaction (4.4 points).

[0472] Comparison of usage sensations of Examples 4 to 8

[0473] Example 4 received a similar level of usability evaluation as Example 1. Example 5 was evaluated to have superior absorption (4.6 points) after application compared to Example 1, which is attributed to improved hair absorption due to enhanced emulsion stability.

[0474] Example 6 received a similar level of usability evaluation as Example 1. Example 7 was evaluated as having excellent absorption (4.7 points) after application, which is analyzed to be due to the rapid evaporation rate of isododecane providing a rapid drying sensation. Example 8 was evaluated as having excellent fragrance pleasantness (4.8 points), which is judged to be due to the fragrance being cooled before addition, thereby minimizing the volatile loss of fragrance components and providing a sufficiently strong and balanced fragrance.

[0475] Analysis of the user experience of Comparative Examples 1 to 7

[0476] Comparative Example 1 was evaluated as having very poor spreadability upon application (3.2 points) and absorption after application (2.8 points). It is analyzed that due to the excessively thin composition, it tended to run off the hair when applied, and the hair felt dry due to rapid evaporation. The overall satisfaction (3.0 points) was very low.

[0477] Comparative Example 2 was rated very poorly in terms of stickiness (2.5 points, very sticky as it is an inverse score) and weight (2.3 points, very heavy as it is an inverse score). It is analyzed that the hair felt greasy and heavy due to excessive vegetable oil. The overall satisfaction (2.8 points) was very low.

[0478] Comparative Examples 3 to 6 all received an average level of usability evaluation of 3.5 to 4.0 points, but received a lower evaluation than Example 1 (4.2 to 4.5 points).

[0479] Comparative Example 7 received a good evaluation of 3.8 to 4.2 points in all evaluation categories, but in particular, the absorption after application (3.8 points) and the pleasantness of the scent (3.9 points) were evaluated lower than Example 1. It is judged that the hair absorption is somewhat lacking due to the absence of camellia-derived ingredients, and there is a lack of natural scent to mask the characteristic odor of the raw material.

[0480] Comprehensive Analysis

[0481] Synthesizing the results of Experimental Example 6, Examples 1 to 8 of the present invention all provide excellent usability, and in particular, Examples 1, 5, 7, and 8 each demonstrated strengths (balance, absorbency, quick-drying properties, and fragrance). Comparative Examples 1 and 2 showed very poor usability, so consumer acceptance is expected to be low; this demonstrates that adherence to the compositional range of the present invention is important for ensuring usability. Overall, the composition of Example 1 received the most balanced evaluation across all usability categories and is judged to be the most commercially suitable.

[0482] Experimental Example 7: Results and Discussion on Effects According to Changes in Component Content

[0483] Example 9: Effect of change in cyclopentasiloxane content

[0484] As a result of varying the cyclopentasiloxane content to 25, 30, 40, 50, and 55 parts by weight, when the content was 25 parts by weight (less than the lower limit), the viscosity of the composition was excessively high, resulting in poor coating performance (spreadability score of 2.8), and when the content was 55 parts by weight (more than the upper limit), the composition was excessively thin and prone to dripping (spreadability score of 3.1), and the thermal protection effect decreased (5.8%). When the content was within the range of 30 to 50 parts by weight, excellent coating performance (spreadability score of 4.0 to 4.5) and thermal protection effect (8.5 to 10.5%) were exhibited, proving that the composition range of the present invention is appropriate.

[0485] Example 10: Effect of change in camellia seed oil content

[0486] As a result of varying the camellia seed oil content to 2, 3, 6, 10, and 12 parts by weight, when the content was 2 parts by weight (less than the lower limit), the hair gloss improvement effect (14.2%) was negligible, and when the content was 12 parts by weight (more than the upper limit), stickiness (2.7 points, inverse score) occurred and volume decreased (2.1%). When the content was within the range of 3 to 10 parts by weight, all showed an excellent gloss improvement effect (18.5 to 24.5%) and appropriate usability (stickiness 3.5 to 4.5 points), proving that the composition range of the present invention is appropriate.

[0487] Example 11: Effect of change in castor seed oil content

[0488] As a result of varying the castor seed oil content to 0.5, 1, 3, 5, and 7 parts by weight, when the content was 0.5 parts by weight (less than the lower limit), emulsification stability was poor and phase separation was observed after 2 months of storage, and when the content was 7 parts by weight (more than the upper limit), viscosity increased excessively (increased by about 35%) and stickiness (2.5 points, inverse score) occurred. When the content was within the range of 1 to 5 parts by weight, excellent emulsification stability (no phase separation after 3 months) and appropriate usability were exhibited, proving that the compositional range of the present invention is appropriate.

[0489] Example 12: Effect of change in camellia flower extract content

[0490] As a result of varying the content of camellia flower extract to 0.05, 0.1, 1.5, 3, and 4 parts by weight, when the content was 0.05 parts by weight (less than the lower limit), the antioxidant effect was negligible and the heat protection effect (7.8%) decreased, and when the content was 4 parts by weight (more than the upper limit), a precipitate formed and the product turned brown (ΔE = 3.5). When the content was within the range of 0.1 to 3 parts by weight, excellent antioxidant effects and stability were all exhibited, proving that the compositional range of the present invention is appropriate.

[0491] Example 13: Effect of change in isododecane content

[0492] As a result of varying the isododecane content to 8, 10, 20, 30, and 35 parts by weight, when the content was 8 parts by weight (less than the lower limit), the quick-drying properties were poor (absorption score 3.2 points) and the viscosity was excessively high, resulting in reduced applicability (spreadability score 3.3 points). When the content was 35 parts by weight (more than the upper limit), the heat protection effect (6.5%) decreased due to excessive volatilization, and safety issues (lowering of flash point) were raised. When the content was within the range of 10 to 30 parts by weight, all exhibited excellent quick-drying properties (absorption score 4.2 to 4.7 points) and heat protection effects (9.5 to 10.8%), proving that the composition range of the present invention is appropriate.

[0493] Comprehensive Analysis

[0494] Synthesizing the results of Experimental Example 7, it was proven that the content range of each component of the present invention was carefully set to achieve an optimal balance of effect, stability, and usability. Since various problems (reduced effect, poor stability, reduced usability, safety issues, etc.) occur when the content of each component is below the lower limit or exceeds the upper limit, it is essential to adhere to the composition range of the present invention.

[0495] Overall Conclusion

[0496] The following conclusions can be drawn through Examples 1 to 13 and Experimental Examples 1 to 7 of the present invention.

[0497] First, the camellia-derived triple complex of the present invention (camellia seed oil, camellia seed extract, camellia flower extract) plays a key role in simultaneously exhibiting four effects: protection against heat damage, hair shine, hair volume, and improvement of split ends, and shows an effect approximately twice as superior as that of the prior art.

[0498] Second, the ingredient content range of the present invention (30 to 50 parts by weight of cyclopentasiloxane, 10 to 20 parts by weight of dimethicone, 5 to 15 parts by weight of cyclohexasiloxane, 1 to 5 parts by weight of castor seed oil, 3 to 10 parts by weight of camellia seed oil, 1 to 5 parts by weight of green tea seed oil, 1 to 5 parts by weight of andiroba seed oil, 0.1 to 3 parts by weight of camellia seed extract, 0.1 to 3 parts by weight of camellia flower extract, 10 to 30 parts by weight of isododecane, 1 to 10 parts by weight of C12-15 alkyl benzoate, 0.01 to 1 part by weight of tocopherol, and 0.01 to 2 parts by weight of fragrance) has been carefully set to achieve an optimal balance of efficacy, stability, and usability, and various problems may occur if this range is exceeded.

[0499] Third, the manufacturing process of the present invention (sequential viscosity addition of silicone components and stepwise increase in stirring speed, priority addition of castor seed oil, temperature-differential addition of camellia extract, sequential addition of a dual carrier system, and final addition of tocopherol and fragrance) is essential for maximizing the physicochemical properties of each component, maximizing synergistic effects between components, and minimizing the loss of active ingredients to optimize the quality of the final product.

[0500] Fourth, the composition of the present invention exhibits excellent effects consistent with the results of human application tests (protection from heat damage 8.7 to 12.1%, improvement of hair gloss 18.3 to 24.7%, increase in hair volume 3.5 to 5.1%, improvement of split ends 5.8 to 9.2%), and provides excellent storage stability for more than 3 months and a user experience with high consumer satisfaction.

[0501] Fifth, the manufacturing method of the present invention utilizes general cosmetic manufacturing equipment and process conditions within a range feasible even for small and medium-sized enterprises, offers excellent reproducibility, and enables industrial mass production.

[0502] In summary, the above results clearly demonstrate that the present invention is an innovative invention regarding a method for manufacturing a heat-damage protection hair composition containing components derived from camellia, which simultaneously achieves excellent heat protection and multifunctional hair improvement effects, exhibits excellent product stability and usability, and possesses outstanding industrial productivity.

Claims

Claim 1 A method for preparing a composition for protecting hair from heat damage, comprising: a. preparing a silicone base mixture by mixing 30 to 50 parts by weight of cyclopentasiloxane, 10 to 20 parts by weight of dimethicone, and 5 to 15 parts by weight of cyclohexasiloxane; b. sequentially adding and mixing 1 to 5 parts by weight of castor seed oil, 3 to 10 parts by weight of camellia seed oil, 1 to 5 parts by weight of green tea seed oil, and 1 to 5 parts by weight of andiroba seed oil to 100 parts by weight of the silicone base mixture; c. sequentially adding and mixing 0.1 to 3 parts by weight of camellia seed extract and 0.1 to 3 parts by weight of camellia flower extract to 100 parts by weight of the mixture from step b; d. A step of sequentially adding and mixing 10 to 30 parts by weight of isododecane and 1 to 10 parts by weight of C12-15 alkyl benzoate to 100 parts by weight of the mixture of step c; and e. a step of preparing a final mixture by adding 0.01 to 1 part by weight of tocopherol and 0.01 to 2 parts by weight of fragrance to 100 parts by weight of the mixture of step d; wherein step a comprises: a1. introducing cyclopentasiloxane into a reaction vessel and stirring at room temperature at 100 RPM to 500 RPM for 3 to 10 minutes; a2. adding dimethicone to the stirred cyclopentasiloxane and stirring at room temperature at 200 RPM to 800 RPM for 5 to 15 minutes to form an intermediate silicon mixture; a3. a4. a step of preparing the silicon base mixture by adding cyclohexasiloxane to the intermediate silicon mixture and stirring at room temperature at 500 RPM to 1,500 RPM for 10 to 30 minutes; and a4. a step of homogenizing the silicon base mixture at 500 RPM to 2,000 RPM for 5 to 15 minutes; wherein step b comprises b1.b2. A step of adding castor seed oil to the silicone base mixture and stirring first for 5 to 15 minutes at 200 RPM to 600 RPM at a temperature of 25°C to 40°C; b3. A step of adding green tea seed oil to the mixture stirred first and stirring second for 5 to 20 minutes at 200 RPM to 600 RPM at a temperature of 25°C to 40°C; b4. A step of adding andiroba seed oil to the mixture stirred third and stirring third for 5 to 15 minutes at 200 RPM to 600 RPM at a temperature of 25°C to 40°C; b5. A step of stirring fourth for 10 to 25 minutes at 200 RPM to 800 RPM at a temperature of 25°C to 40°C; b6. The method comprises the step of stabilizing the mixture stirred a fourth time at 100 RPM to 500 RPM for 5 to 15 minutes while cooling it to room temperature; wherein step c comprises: c1. adding camellia seed extract to the mixture of step b and stirring the first extract at 100 RPM to 500 RPM for 10 to 25 minutes at a temperature of 10℃ to 30℃; c2. raising the temperature of the mixture stirred with the first extract to 20℃ to 35℃; c3. adding camellia flower extract to the heated mixture and stirring the second extract at 200 RPM to 600 RPM for 15 to 30 minutes at a temperature of 20℃ to 40℃; and c4. The method comprises the step of homogenizing the mixture of the second extract stirred at 300 RPM to 800 RPM for 10 to 20 minutes; wherein step d comprises: d1. adding isododecane to the mixture of step c and stirring the first carrier at 300 RPM to 800 RPM for 5 to 15 minutes at a temperature of 15℃ to 35℃; d2. stirring the mixture of the first carrier stirred at 200 RPM to 600 RPM for 3 to 10 minutes while increasing the temperature to 20℃ to 40℃; d3.A method for preparing a composition for protecting hair from heat damage, comprising: a step of adding C12-15 alkyl benzoate to the above-mentioned stabilized stirred mixture and stirring a secondary carrier at 300 RPM to 700 RPM for 10 to 20 minutes at a temperature of 20°C to 40°C; and d4. a step of homogenizing the above-mentioned secondary carrier stirred mixture at 400 RPM to 1,000 RPM for 10 to 25 minutes while cooling to room temperature; wherein step e comprises stirring at 100 RPM to 300 RPM for 3 to 10 minutes at room temperature. Claim 2 A method for preparing a composition for protecting hair from heat damage according to claim 1, characterized in that the cyclopentasiloxane of step a1 has a viscosity of 3 to 6 cSt, the dimethicone of step a2 has a viscosity of 100 to 1,000 cSt, and the cyclohexasiloxane of step a3 has a viscosity of 5 to 10 cSt. Claim 3 A method for preparing a composition for protecting hair from heat damage according to claim 1, wherein the castor seed oil contains 80% by weight or more of ricinoleic acid and is oriented at the interface between the silicone base mixture and the subsequently added vegetable oil components in step b1.

Images