Cosmetic composition for hair

Abstract

The present invention relates to a hair cosmetic composition comprising an oil capable of volatilizing 50% or more within 60 minutes at 40°C; and an emollient having a refractive index of 1.44 or higher, wherein the emollient is included in an amount of 5% to 35% by weight based on the total weight of the hair cosmetic composition, wherein the hair cosmetic composition is harmless to the human body or the environment and can have excellent gloss and a smooth finish in a transparent formulation.

Description

Technology Field

[0001] The present invention relates to a cosmetic composition for hair. Background Technology

[0003] Hair cosmetic compositions are used to provide shine and softness to hair, and to repair and protect damaged hair. Conventional hair cosmetic compositions are primarily formulated to impart shine and moisture to the hair using silicone-based compounds, natural oils, or synthetic oils as key ingredients. These products mainly function to provide gloss through a physical luminous effect or to protect the hair from external stimuli by forming a thin protective film with oils.

[0004] However, most existing products related to hair oil compositions of the prior art often have oils that are not transparent or leave residue after use that gives the hair a greasy feeling, which can cause an unpleasant texture or greasiness after use.

[0005] In addition, cyclosiloxane, which is primarily used as a base oil, has been frequently utilized due to its advantages, such as its distinctive light texture, rapid evaporation rate, and ability to provide a soft and glossy feel to the hair, as well as its low stickiness after use and quick absorption, which offers a pleasant user experience.

[0006] However, environmental and health concerns regarding the use of cyclosiloxanes have recently been raised. Cyclosiloxanes do not dissolve well in water or decompose, so they can accumulate in the environment over the long term. In particular, considering the impact of accumulation in aquatic environments on ecosystems, the use of products containing cyclosiloxanes is being pointed out as a problem, as it could be a cause of environmental pollution. Furthermore, there is a potential risk that cyclosiloxanes may be absorbed into the human body and cause irritation to people with sensitive skin upon long-term exposure.

[0007] Therefore, continuous research is needed on cosmetic hair compositions that are transparent, provide high gloss to the hair, offer excellent styling, and have a superior user experience, even without using cyclosiloxane. Prior art literature

[0009] Republic of Korea Registered Patent Publication No. 10-2402021 The problem to be solved

[0010] The present invention aims to provide a cosmetic composition for hair that is harmless to the human body or the environment, has a transparent formulation, and offers excellent shine and texture. means of solving the problem

[0012] The present invention, for solving the problems described above, provides a hair cosmetic composition comprising: an oil capable of volatilizing 50% or more within 60 minutes at 40°C; and an emollient having a refractive index of 1.44 or higher, wherein the emollient is included in an amount of 5% to 35% by weight based on the total weight of the hair cosmetic composition.

[0013] The above oil may have a chain-like structure.

[0014] The above oil may be one or more selected from the group consisting of silicone oils and branched-chain aliphatic hydrocarbons having 10 to 20 carbon atoms.

[0015] The above silicone oil is one or more selected from the group consisting of disiloxane, trisiloxane, dimethicone, and methyltrimethicone, and may have a viscosity of 1.5 cSt or less.

[0016] The above branched-chain aliphatic hydrocarbon may be one or more selected from the group consisting of isodecaine, isododecane, and isotridecaine.

[0017] The emollient is an ester-based oil, and the ester-based oil may be one or more selected from the group consisting of caprylic / capric triglyceride, C12-15 alkyl benzoate, ethylhexyl palmitate, cetyl ethylhexanoate, butylene glycol dicaprylate / dicaprate, hydrogenated ethylhexyl oliveate, coco-caprylate / caprate, and triolein.

[0018] The above hair cosmetic composition may further include one or more of a conditioning agent and a fermented oil.

[0019] The above conditioning agent is a non-volatile silicone conditioning agent, and the above non-volatile silicone conditioning agent may be one or more selected from the group consisting of silicone oils, silicone gums, aminosilics, and cationic silicones.

[0020] The above conditioning agent may be included in an amount of 20% to 60% by weight based on the total weight of the hair cosmetic composition.

[0021] The above fermented oil may be one or more selected from the group consisting of argan oil, olive oil, hazelnut oil, moringa oil, avocado oil, jojoba oil, camellia oil, macadamia oil, and soybean oil.

[0022] The above fermented oil may be included in an amount of 0.001% to 10% by weight based on the total weight of the hair cosmetic composition. Effects of the invention

[0024] The hair cosmetic composition according to the present invention is harmless to the human body or the environment, has a transparent formulation, has excellent gloss, and can provide excellent grooming with less frizziness even in humid environments.

[0025] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below. Specific details for implementing the invention

[0027] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described in detail below. However, the present invention is not limited to the embodiments disclosed below but can 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 present invention, and the present invention is defined only by the scope of the claims.

[0028] The terms used in this specification are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. The terms "comprises" and / or "comprising" as used in this specification do not exclude the presence or addition of one or more other components in addition to the components mentioned. Throughout the specification, "and / or" includes each of the mentioned components and all combinations of one or more. Although terms such as "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical scope of the invention.

[0029] Unless otherwise defined, all terms used herein (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0030] In this specification, the term "skin" refers to tissue covering the surface of an animal's body, and is a broad concept that includes not only tissue covering the surface of the body such as the face or body, but also the scalp and hair.

[0031] Units used in the specification of the present invention without special mention are based on weight, and for example, units of % or ratio mean weight % or weight ratio.

[0033] The present invention will be described in detail below.

[0034] The present invention relates to a hair cosmetic composition comprising: an oil capable of volatilizing 50% or more within 60 minutes at 40°C; and an emollient having a refractive index of 1.44 or higher, wherein the emollient is included in an amount of 5% to 35% by weight based on the total weight of the hair cosmetic composition.

[0035] A cosmetic composition comprising the above ingredients is harmless to the human body and the environment, has a transparent formulation, can provide a soft and glossy effect to the hair, and offers excellent manageability with reduced frizz even in humid environments. Additionally, by using highly volatile oils, it provides a refreshing, non-sticky sensation after use, and can improve hair texture and make it soft.

[0036] In one embodiment, the oil can volatilize 50% or more, 50% to 100%, or 50% to 70% within 60 minutes at 40°C, thereby providing a refreshing feeling that is not sticky after use.

[0037] The above oil may have a chain-like structure. Specifically, physical properties such as viscosity and evaporation rate of the oil can be enabled to act effectively on the hair. The oil with the chain-like structure enables a smoother and more uniform distribution, thereby providing effective shine and moisturizing effects to the hair.

[0038] The above oil may be one or more selected from the group consisting of silicone oils and branched-chain aliphatic hydrocarbons having 10 to 20 carbon atoms. The silicone oil has a chain-like structure and possesses characteristics such as providing inherent shine, water resistance, and low viscosity, thereby providing excellent softness to the hair. In addition, the branched-chain aliphatic hydrocarbon has 10 to 20, 10 to 18, or 12 to 16 carbon atoms, and imparts a light texture to the hair due to its lightweight properties, and does not burden the hair due to its excellent volatility.

[0039] The above silicone oil is, for example, one or more selected from the group consisting of disiloxane, trisiloxane, dimethicone, and methyltrimethicone, and may have a viscosity of 1.5 cSt or less. As a specific example, the viscosity may refer to kinematic viscosity measured at 25°C according to ASTM D445, and may be 1.5 cSt or less, 0.65 cSt to 1.5 cSt, or 1 cSt to 1.5 cSt. The above silicone oil provides high shine and softness, while having low viscosity, it is quickly absorbed into the hair without stickiness and can provide a natural feel to the hair.

[0040] The above branched-chain aliphatic hydrocarbons include, for example, one or more selected from the group consisting of isodecaine, isododecane, and isotridecaine. These hydrocarbons have high volatility and low viscosity, and are rapidly absorbed, providing a smooth, non-sticky application and a light feel. Due to their high volatility, the oil evaporates quickly, while providing effective moisturizing and shine effects to the hair.

[0041] The above oil may be included in the remainder of the above hair cosmetic composition. The specific content of the above oil may be, for example, 10% to 50% by weight, 15% to 45% by weight, or 20% to 40% by weight. When using an oil having the above degree of volatility in a content within the above range, the transparency, neatness, shine, and usability may be excellent.

[0042] In one embodiment, the emollient may be an ester-based oil having a refractive index of 1.44 or higher. The refractive index may refer to the refractive index (RI) when measured according to the standard test method ASTM D1218, and may be 1.44 to 1.6, 1.44 to 1.55, or 1.44 to 1.5.

[0043] The above ester oil may be one or more selected from the group consisting of, for example, caprylic / capric triglyceride, C12-15 alkyl benzoate, ethylhexyl palmitate, cetyl ethylhexanoate, butylene glycol dicaprylate / dicaprate, hydrogenated ethylhexyl oliveate, coco-caprylate / caprate, and triolein. The above ester oil provides a soft and shiny effect to the hair and, as an emollient, can provide more nourishment to the hair and prevent dryness.

[0044] The emollient may be included in an amount of 5% to 35% by weight, 10% to 30% by weight, 10% to 25% by weight, or 10% to 20% by weight based on the total weight of the hair cosmetic composition. When a high-refractive index emollient with a refractive index of 1.44 or higher is included in an amount within the above range, the hair may have excellent shine and gloss.

[0045] In one embodiment, the cosmetic composition for hair may further include one or more of a conditioning agent and a fermented oil. The conditioning agent makes the texture of the hair soft and smooth, and the fermented oil may help nourish the hair and improve scalp health.

[0046] In one embodiment, the conditioning agent may be a non-volatile silicone conditioning agent. The non-volatile silicone conditioning agent may be, for example, one or more selected from the group consisting of silicone oils, silicone gums, amino silicones, and cationic silicones. The non-volatile silicone conditioning agent can impart continuous shine and softness to the hair and protect the hair from drying out.

[0047] As the above-mentioned non-volatile silicone conditioning agent, the silicone oil may be one or more selected from the group consisting of, for example, non-volatile dimethicone, trimethicone, phenyl-modified silicone (e.g., phenyl trimethicone, diphenyl dimethicone, etc.), alkylmethicone (e.g., caprylylmethicone, cetyl dimethicone, etc.) having a viscosity of 10 cSt or more.

[0048] As the above-mentioned non-volatile silicone conditioning agent, the silicone gums may be one or more selected from the group consisting of, for example, dimethicone gum and dimethiconol gum.

[0049] As the above non-volatile silicone conditioning agent, the amino silicones may be one or more selected from the group consisting of, for example, amodimethicone, trimethylsilyl amodimethicone, bis-aminopropyl dimethicone, and aminopropyl dimethicone.

[0050] As the above non-volatile silicone conditioning agent, the cationic silicones may be, for example, one or more selected from the group consisting of silicon quaternium-16, silicon quaternium-18, silicon quaternium-22, and silicon quaternium-26.

[0051] The conditioning agent may be included in an amount of 20% to 60% by weight, 30% to 60% by weight, or 40% to 60% by weight based on the total weight of the hair cosmetic composition. By including the conditioning agent in an amount within the above range, the conditioning effect can be maximized while maintaining balance with other ingredients to achieve optimal performance in terms of transparency, texture, shine, gloss, and feel.

[0052] In one embodiment, the fermented oil may be one or more selected from the group consisting of argan oil, olive oil, hazelnut oil, moringa oil, avocado oil, jojoba oil, camellia oil, macadamia oil, and soybean oil. Specifically, the fermented oil may be a fermented oil obtained by fermenting one or more selected from the group consisting of argan, olive, hazelnut, moringa, avocado, jojoba, camellia, macadamia, and soybean using a yeast strain. As a naturally derived ingredient, the fermented oil contains various bioactive substances generated during the fermentation process that have a positive effect on the scalp, providing nutrition to the hair and maintaining the hair's moisture balance to keep it healthy. Specifically, amino acids, vitamins, minerals, etc., generated during the fermentation process are effective in supporting scalp health and maintaining moisture balance, which can help keep the scalp moist and prevent dry scalp.

[0053] The fermented oil is included in an amount of 0.001% to 10% by weight, 0.1% to 5% by weight, or 1% to 3% by weight based on the total weight of the hair cosmetic composition. When the fermented oil is included in an amount within the above range, it provides light and efficient nutrition to the hair and balances with other ingredients to achieve optimal performance in terms of transparency, neatness, shine, gloss, and usability.

[0054] In one embodiment, the hair cosmetic composition may further include, if necessary, additives such as water-soluble and oil-soluble physiologically active ingredients, preservatives, pH adjusters, fatty acids, emulsifiers, antioxidants, UV blockers, pigments, dyes, fragrances, etc., as known in the art, and the types and amounts thereof may be appropriately selected by those skilled in the art.

[0055] In one embodiment, the cosmetic composition for hair may have formulations such as hair oil, hair serum, hair conditioner, shampoo, hair mask, hair spray, hair tone-up product, hair tonic, hair foam, hair liquid, hair gel, and hair cream.

[0057] Specific embodiments of the present invention are presented below. However, the embodiments described below are merely for the purpose of specifically illustrating or explaining the present invention and should not be limited thereto. Furthermore, details not described herein can be sufficiently technically inferred by a person skilled in the art, so their description is omitted.

[0058] [Examples and Comparative Examples]

[0059] Examples 1 to 9 and Comparative Examples 1 to 8

[0060] A cosmetic composition for hair was prepared by mixing each component according to the compositions in Tables 1 and 2 below, wherein the total amount of each composition is 100% by weight.

[0061] Examples 1 2 3 4 5 6 7 8 9 Isododecane Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Dimethicone 1.5cs - 10 - - - - - - - Cyclopentasiloxane - - - - - - - - - C12-15 alkyl benzoate 10 10 - 10 10 10 10 5 5 Caprylic / Capric Triglyceride 10 10 10 5 5 5 5 - 30 isopropyl myristate - - - - - - - - - Non-volatile silicone conditioning agent 50 50 50 50 50 50 50 50 50 Argan fermented oil - - - - 5 0.001 10 - - spices 2 2 2 2 2 2 2 2 2

[0062] Comparative example 1 2 3 4 5 6 7 8 Isododecane Remaining amount Remaining amount Remaining amount - - Remaining amount Remaining amount Remaining amount Dimethicone 1.5cs - - - - - - - - Cyclopentasiloxane - - - Remaining amount Remaining amount - - - C12-15 alkyl benzoate 1 20 10 5 - 4 6 Caprylic / Capric Triglyceride - - 20 5 - - - 30 isopropyl myristate - - - - - 5 - - Non-volatile silicone conditioning agent 50 50 50 50 50 50 50 50 Argan fermented oil - - - - - - - - spices 2 2 2 2 2 2 2 2

[0063] In Tables 1 and 2 above, the refractive index of C12-15 alkyl benzoate is 1.483 to 1.487 (20°C), the refractive index of caprylic / capric triglyceride is 1.447 to 1.452 (20°C), and the refractive index of isopropyl myristate is 1.432 to 1.436 (20°C).

[0064] In addition, a non-volatile silicone conditioning agent was used by appropriately mixing dimethicone, dimethiconol, etc., with a viscosity of 10 cSt or higher.

[0066] [Experimental Example]

[0067] Experimental Example 1: Evaluation of Oil Volatility Characteristics

[0068] The isododecane, dimethicone 1.5cs, and cyclopentasiloxane used as the above oils were left at 40°C for 60 minutes, and the volatilized fraction was measured.

[0069] Specifically, a predetermined amount of each oil was taken and dispensed into a Petri dish, and then placed in a constant temperature chamber maintained at 40 ± 2°C. After 60 minutes, the Petri dish was removed and the weight of the remaining amount was measured.

[0070] As a result, the volatile fractions were confirmed to be 100% isododecane, 57% dimethicone 1.5cs, and 30% cyclopentasiloxane.

[0072] Experimental Example 2: Transparency Measurement

[0073] The transparency of the hair cosmetic compositions according to Examples 1 to 7 and Comparative Examples 1 to 6 was evaluated, and the results are shown in Table 3 below. Specifically, each composition was placed in a transparent sample container and positioned on a red background paper, and then a was measured using a colorimeter (MACH5+). * Transparency was quantified by measuring the value. At this time, the result of measuring purified water under the same conditions was a * The value was found to be 41.25, and based on this as the standard value, a value of 40 or higher, which is visible to the naked eye, was determined to be transparent.

[0074] Transparency (a * ) Example 1 42.55 Example 2 41.15 Example 3 40.43 Example 4 41.56 Example 5 42.10 Example 6 41.73 Example 7 41.62 Comparative Example 1 36.49 Comparative Example 2 36.51 Comparative Example 3 Formulation separation Comparative Example 4 40.22 Comparative Example 5 39.97 Comparative Example 6 39.58

[0076] Experimental Example 3: Evaluation of Anti-frizz

[0077] The grooming sensation of the hair cosmetic compositions according to Example 1 and Comparative Examples 1, 4, and 5 was evaluated. Specifically, each composition was applied to a deep curly type tress with a length of 30 cm and a weight of 10 g, and after storing it for 24 hours in a constant temperature and humidity chamber at 25°C and 80% relative humidity, the length was measured and the change was calculated. The results are shown in Table 4.

[0078] Change in length (%) Example 1 -4.3 Comparative Example 1 -22.7 Comparative Example 4 -14.2 Comparative Example 5 -18.5

[0080] Experimental Example 4: Evaluation of Gloss

[0081] Compositions according to Examples 1 and 3 and Comparative Examples 1, 5, and 6 were applied to each Asian moth tress and left for 1 hour, and the improvement rate of brightness intensity before and after application was measured. Specifically, each tress was illuminated with constant lighting, photographs were taken before and after the application of each composition, and the brightness intensity (mean gray value) was measured using an image analysis program, and the improvement rate of brightness intensity (%) was calculated. The results are shown in Table 5 below.

[0082] Brightness Intensity Improvement Rate (%) Example 1 36.6 Example 3 34.2 Comparative Example 1 8.9 Comparative Example 5 16.3 Comparative Example 6 11.2

[0083] Referring to Tables 3, 4, and 5 above, it was found that the hair cosmetic composition according to the present invention has a transparent appearance, excellent neatness with a small change in length, and excellent gloss with a high improvement rate in brightness intensity. In particular, it was confirmed that in Examples 1 to 7, which use a chain-type oil rather than a ring-type oil as the oil, the transparency and neatness characteristics are superior.

[0084] On the other hand, Comparative Example 1 is a case that does not contain emollient, and it was confirmed that transparency, texture, and gloss characteristics were all reduced.

[0085] In addition, Comparative Example 2 was a case containing a small amount of emollient, and it was confirmed that the transparency was reduced.

[0086] In addition, Comparative Example 3 contained an excessive amount of emollient, and the formulation separated due to reduced stability, making it impossible to measure the characteristics.

[0087] In addition, it was confirmed that Comparative Example 4 used ring-type oil instead of chain-type oil, resulting in reduced orderliness.

[0088] In addition, Comparative Example 5 used a ring-type oil instead of a chain-type oil and contained a small amount of emollient, and it was confirmed that the transparency, texture, and gloss characteristics were all reduced.

[0089] In addition, Comparative Example 6 was a case where an oil with a refractive index of less than 1.44 was used as an emollient, and it was confirmed that the transparency and gloss characteristics were degraded.

[0091] Experimental Example 5: Evaluation of Usability

[0092] Panel evaluations regarding gloss and grooming sensation were conducted on 40 women in their 20s to 40s regarding the hair cosmetic compositions according to Examples 1, 3, 5, 8, and 9, and Comparative Examples 1, 6, 7, and 8. Specifically, the compositions of each example and comparative example were applied in equal amounts to the hair of all subjects after washing their hair and removing moisture with a towel. Afterward, the hair was air-dried, and a usability evaluation was conducted. The results are shown in Table 6 below.

[0093] Specifically, each question in Table 6 below was evaluated on a scale of 1 to 5, and the average value was calculated and shown in Table 6 below. Here, a score of 1 indicates a negative evaluation, and a score of 5 indicates a positive evaluation.

[0094] Examples Comparative example 1 3 5 8 9 1 6 7 8 It has good luster and shine. 4.5 4.2 4.4 3.9 3.9 3.7 3.8 3.4 3.3 The damaged area is smoothed out. 4.8 4.2 4.8 3.8 3.9 2.8 2.8 3.2 3.4 It is neatly organized without becoming dry and brittle. 4.7 4.2 4.7 3.8 3.9 2.8 2.9 3.2 3.4

[0095] Referring to Table 6 above, for all questions regarding the evaluation of usability, the evaluation results of the hair cosmetic composition according to the example were superior to the evaluation results of the hair cosmetic composition according to the comparative example. On the other hand, Comparative Example 6, which uses an emollient with a refractive index of less than 1.44, or an emollient with a refractive index of 1.44 or higher, showed inferior results in all items regarding the evaluation of usability when the content was outside the scope of the present invention.

[0096] Although embodiments of the present invention have been described above, those skilled in the art will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

Claim 1 A hair cosmetic composition comprising: an oil capable of volatilizing at least 50% by weight within 60 minutes at 40℃; and an emollient having a refractive index of 1.44 or higher, wherein the oil has a chain-type structure, the oil is included in an amount of 10% to 50% by weight based on the total weight of the hair cosmetic composition, and the emollient is included in an amount of 5% to 35% by weight based on the total weight of the hair cosmetic composition. Claim 2 delete Claim 3 A cosmetic composition for hair according to claim 1, wherein the oil is one or more selected from the group consisting of silicone oils and branched-chain aliphatic hydrocarbons having 10 to 20 carbon atoms. Claim 4 A cosmetic composition for hair according to claim 3, wherein the silicone oil is one or more selected from the group consisting of disiloxane, trisiloxane, dimethicone, and methyltrimethicone, and has a viscosity of 1.5 cSt or less. Claim 5 A cosmetic composition for hair according to claim 3, wherein the branched-chain aliphatic hydrocarbon is one or more selected from the group consisting of isodecaine, isododecane, and isotridecaine. Claim 6 A cosmetic composition for hair according to claim 1, wherein the emollient is an ester-based oil, and the ester-based oil is one or more selected from the group consisting of caprylic / capric triglyceride, C12-15 alkyl benzoate, ethylhexyl palmitate, cetyl ethylhexanoate, butylene glycol dicaprylate / dicaprate, hydrogenated ethylhexyl oliveate, coco-caprylate / caprate, and triolein. Claim 7 In claim 1, the hair cosmetic composition further comprises one or more of a conditioning agent and a fermented oil. Claim 8 A cosmetic composition for hair according to claim 7, wherein the conditioning agent is a non-volatile silicone conditioning agent, and the non-volatile silicone conditioning agent is one or more selected from the group consisting of silicone oils, silicone gums, aminosilics, and cationic silicones. Claim 9 In claim 7, the hair cosmetic composition comprising the conditioning agent in an amount of 20% to 60% by weight based on the total weight of the hair cosmetic composition. Claim 10 A cosmetic composition for hair according to claim 7, wherein the fermented oil is one or more selected from the group consisting of argan oil, olive oil, hazelnut oil, moringa oil, avocado oil, jojoba oil, camellia oil, macadamia oil, and soybean oil. Claim 11 A hair cosmetic composition according to claim 7, wherein the fermented oil is included in an amount of 0.001% to 10% by weight based on the total weight of the hair cosmetic composition.