Anhydrous Cleansing Cosmetic Composition For Effectively Removing sebum With Trehalose And Gluconolactone As Scrub

Abstract

The present invention relates to an anhydrous cosmetic composition for cleansing that effectively removes hard sebum embedded in the pores of the nose. More specifically, the invention relates to an anhydrous cosmetic composition that includes trehalose, gluconolactone, oil, and a surfactant as main ingredients, which enables the removal of makeup and skin impurities with excellent cleansing power, allows for the physical removal of sebum using trehalose and gluconolactone as scrub agents, and has enhanced moisturizing power.

Description

Technology Field

[0001] The present invention relates to an anhydrous cosmetic composition for cleansing that effectively removes hard sebum embedded in the pores of the nose. More specifically, the invention relates to an anhydrous cosmetic composition that includes trehalose, oil, and a surfactant as main ingredients, which enables the removal of makeup and skin impurities with excellent cleansing power, allows for the physical removal of sebum with trehalose and gluconolactone, and has enhanced moisturizing power. Background Technology

[0002] The forehead and nose areas of the face have well-developed sebaceous glands and vigorous sebum secretion. When keratin and sebum become stagnant due to the keratinization of the follicular epithelium, comedones are formed as non-inflammatory lesions. Comedones can be classified into open comedones (blackheads) and closed comedones (whiteheads). Blackheads appear as flat or slightly raised papules, while parts of whiteheads protrude through the pores and oxidize upon contact with air, appearing black. Since blackheads are aesthetically unpleasing, it is important to remove them effectively. However, squeezing blackheads with your hands can cause capillaries to dilate, leading to redness of the nose tip, or widen pores and infect them with bacteria, potentially causing various skin problems. To address these issues, various exfoliating cosmetics capable of artificially removing the stratum corneum have been developed and can be broadly categorized into two types: chemical and physical.

[0003] First, chemical exfoliating cosmetics are formulations that chemically dissolve and remove dead skin cells using AHA (Alpha Hydroxy Acid), BHA (Beta Hydroxy Acid), salicylic acid, and plant extracts containing these.

[0004] Korean Published Patent No. 10-2013-0056592 discloses a cosmetic composition containing kiwifruit extract as an active ingredient that reduces skin keratin and exhibits an effect of improving skin texture. Most of these chemical exfoliating cosmetics have the disadvantage of causing skin irritation and various skin side effects because they use chemical active substances with very low pH.

[0005] In contrast, physical exfoliating cosmetics include formulations characterized by physically removing dead skin cells using wax, scrubs, and gommage.

[0006] Korean Published Patent No. 10-2018-0081265 discloses a cosmetic composition for exfoliation that removes dead skin cells and impurities using natural scrub ingredients and polyols as scrub agents. However, while these natural scrub ingredients do not cause adverse effects of environmental pollution such as microplastics, they have the disadvantage that daily use can cause skin damage due to physical irritation and lead to a decrease in skin moisture due to excessive exfoliation. The problem to be solved

[0007] Accordingly, the inventors aim to provide a cosmetic composition for cleansing that effectively removes hard, oily sebum embedded in the pores of the nose without irritation using an anhydrous oil component, reduces the inconvenience of use by enabling both cleansing and exfoliation, and minimizes skin damage by providing moisture to the skin using trehalose and gluconolactone as scrub agents. means of solving the problem

[0008] The above-mentioned problem is achieved by an anhydrous cleansing cosmetic composition having a sebum removal effect, comprising 40% to 80% by weight of oil, 5% to 20% by weight of an oil thickener, 10% to 30% by weight of a surfactant, and 5% to 20% by weight of trehalose and gluconolactone as scrub agents, based on the total weight of the cosmetic composition.

[0009] Preferably, the oil may include one or more selected from the group consisting of caprylic / capric triglyceride, dicaprylyl carbonate, ethylhexyl palmitate, hydrogenated polydecene, and dimethicone.

[0010] Additionally, preferably, the surfactant may be one or more selected from the group consisting of sorbes-30 tetraoleate, sorbitan sesquioleate, sucrose laurate, polyglyceryl-10 oleate, polyglyceryl-10 dioleate, and polyglyceryl-2 sesquicaprylate.

[0011] Additionally, preferably, the oil thickener may be one or more selected from the group consisting of hydrogenated poly(C6-20 olefin), HDI / trimethylolhexyl lactone crosspolymer, dextrin fatty acid ester, stearolyl inulin, polyethylene, and glyceryl fatty acid ester.

[0012] In addition, the above-mentioned problem is achieved by a method for preparing an anhydrous cleansing cosmetic composition comprising: a first mixing step of preparing a mixture by mixing a surfactant with oil; a second mixing step of adding an oil thickener to the first mixture and mixing; a third mixing step of adding trehalose and gluconolactone to the second mixture and mixing; and a step of adding an additive to the third mixture. Effects of the invention

[0013] The cosmetic composition according to the present invention can provide a cosmetic composition in which an anhydrous oil component removes oily sebum without irritation and has excellent cleansing power, and has the effect of removing dead skin cells and skin waste such as sebum and dead skin cells through cleansing, and has enhanced moisturizing power. Specific details for implementing the invention

[0014] All technical terms used in this invention, unless otherwise defined, have the following definitions and correspond to the meaning generally understood by those skilled in the art in the relevant field of this invention. Additionally, while preferred methods or samples are described herein, similar or equivalents are also included within the scope of this invention.

[0015] The term “about” means an amount, level, value, number, frequency, percentage, dimension, size, quantity, weight, or length that varies by about 30, 25, 20, 15, 10, 9, 8, 7, 6, 5, 4, 3, 2, or 1% with respect to a reference amount, level, value, number, frequency, percentage, dimension, size, quantity, weight, or length.

[0016] Throughout this specification, unless otherwise required by the context, the terms “comprising” and “comprising” should be understood to imply that the presented steps or components, or groups of steps or components, are included, but any other steps or components, or groups of steps or components are not excluded.

[0018] The present invention relates to an anhydrous cosmetic composition for cleansing that effectively removes sebum using trehalose and gluconolactone as scrub agents, and specifically comprises trehalose and gluconolactone as oil, oil thickener, surfactant, and scrub agent.

[0019] Among the oil-based components used as active ingredients in the cosmetic composition of the present invention, the oil may preferably be silicone oil, ester-based oil, triglyceride-based oil, or a mixture thereof. The ester-based oil and triglyceride-based oil have advantages such as easy skin penetration due to their molecular weight and easy dispersion of pigments. However, increasing the amount of the oil may result in disadvantages such as a greasy feel, reduced spreadability, and skin irritation, which are typical characteristics of oils. On the other hand, silicone oil has the advantages of excellent feel, such as lightness and spreadability, and excellent skin safety, but it has the problem of poor skin adhesion and poor moisturizing effect.

[0020] Accordingly, the oil in the present invention can most preferably be used in the form of a mixture in which an ester-based or triglyceride-based oil is the main component and silicone oil is added in a low proportion. Specifically, the oil may be one or more selected from the group consisting of caprylic / capric triglyceride, dicaprylyl carbonate, ethylhexyl palmitate, hydrogenated polydecene, and dimethicone. The oil may be included in an amount of 40% to 80% by weight relative to the total weight of the cosmetic composition.

[0021] The above oil thickener increases the viscosity of the anhydrous cosmetic composition, allowing the trehalose and gluconolactone dispersed in the oil to remain in a stable state at high or low temperatures. As the oil thickener, one selected from the group consisting of hydrogenated poly(C6-20 olefin), HDI / trimethylolhexyl lactone crosspolymer, dextrin fatty acid ester, stearolyl inulin, polyethylene, and glyceryl fatty acid ester may be used, and more preferably, HDI / trimethylolhexyl lactone crosspolymer may be used. The content of the oil thickener may be 5 to 20 weight percent relative to the total weight of the cosmetic composition, and preferably 5 to 15 weight percent. If the oil thickener content is less than 5 weight percent, the hardness is formed low, which is detrimental to stability, and if it exceeds 20 weight percent, the hardness is too high, which has the disadvantage of poor spreadability and heat resistance.

[0022] The surfactant included in the present invention is a composition that improves cleansing and determines rinsability with water, and may be one or more selected from the group consisting of sorbes-30 tetraoleate, sorbitan sesquioleate, sucrose laurate, polyglyceryl-10 oleate, polyglyceryl-10 dioleate, polyglyceryl-2 sesquicaprylate, and mixtures thereof. The surfactant may be included in an amount of 10% to 30% by weight relative to the total weight of the cosmetic composition. If the surfactant content is less than 10% by weight, the cleansing power is insufficient and rinsability with water is poor, and if it exceeds 30% by weight, there is a problem that viscosity is not properly formed.

[0023] The scrub agent included in the present invention may use trehalose and gluconolactone. Preferably, they may be included by mixing them in a weight ratio of 1:1. The scrub agent must have uniform particles and a size appropriate enough to provide an exfoliating effect when applied to the skin without causing strong irritation. Since the particles of the scrub agent included in the cosmetic composition are rubbed directly onto the skin, they can be selected to have a size that prevents scratching or unnecessary irritation, or minimizes irritation, when applied to the skin. In the present invention, the particle size of the scrub agent is preferably 100 μm to 1000 μm. If the particle size is too small, the effect on sebum exfoliation becomes weak, and if the particle size is too large, although the exfoliation effect is excellent, side effects such as skin irritation may occur. The scrub agent may be included in an amount of 5% to 20% by weight relative to the total weight of the cosmetic composition. If the content of the scrub agent is less than 5% by weight, the exfoliation effect is negligible, and if it exceeds 20% by weight, skin irritation may occur.

[0024] In addition to the oil and surfactant components listed above, the cosmetic composition may include additives such as preservatives, fragrances, and alcohols to satisfy 100% by weight of the total weight.

[0026] The cosmetic composition of the present invention is prepared by a method comprising the following steps:

[0027] (a) A first mixing step of preparing a mixture by mixing a surfactant with oil;

[0028] (b) A second mixing step of adding an oil thickener to the mixture prepared in the first mixing step and mixing;

[0029] (c) A third mixing step of adding trehalose and gluconolactone to the mixture prepared in the second mixing step and mixing;

[0030] (d) A step of adding conventional additives, such as preservatives, alcohol, and fragrances, to the mixture obtained in the third mixing step above.

[0031] Step (b) of the above manufacturing process is preferably performed at a temperature of 75°C or higher and less than 90°C. If mixed at a temperature higher or lower than the above range, the oil thickeners may clump together to form crystals.

[0032] In addition, in the second mixing step mentioned above, it is important to gradually add the oil thickener over 10 minutes, and after the addition is complete, to mix it by aggro or homomixing for 5 to 15 minutes to ensure complete dispersion.

[0033] In addition, in the third mixing step mentioned above, it is important to gradually add trehalose and gluconolatone over 10 minutes, and after the addition is complete, to mix or homomix for 5 to 15 minutes to ensure complete dispersion.

[0034] (d) In the step of adding the additive, the additive is added over 5 minutes and mixed until completely dissolved.

[0036] Preferred embodiments are presented below to aid in understanding the present invention. However, the following embodiments are provided merely to facilitate a better understanding of the present invention, and the scope of the present invention is not limited by these embodiments.

[0038] Examples 1, 2 and Comparative example 1 to 6

[0039] Cosmetic compositions of Examples 1 and 2 and Comparative Examples 1 to 6 were prepared using the following manufacturing method with the compositions listed in Table 1.

[0040] 1) Oil was placed in a beaker at room temperature and the surfactant was slowly added over 5 minutes while mixing with azi or homogenizing, and after the addition was completed, the mixture was mixed for 10 minutes to completely disperse and homogenize.

[0041] 2) While mixing the components of step 1) at 75℃ or 90℃, the oil thickener was slowly added over 10 minutes and completely dissolved over 10 minutes.

[0042] 3) At room temperature, the trehalose and gluconolactone scrub agents were added to the ingredients of step 2 over a period of 10 minutes and mixed to completely disperse and homogenize.

[0043] 3) Additives such as flavorings were added to the ingredients of step 2) at room temperature over a period of 5 minutes and mixed to completely disperse and homogenize.

[0044] Ingredients (Unit: weight%) Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Caprylic / Capric Triglyceride (Oil) To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 Solves-30 Tetraoleate (Surfactant) 20 .0 20.0 5 .0 40.0 20 .0 20 .0 20.0 20.0 HDI / Trimethylolhexyl lactone crosspolymer (oil thickener) 10 .0 10.0 10.0 10.0 5.0 40.0 10.0 10.0 Trehalose (scrub) 2.5 5.0 5.0 10.0 10.0 10.0 0.5 15.0 Gluconolactone (scrub) 2.5 5.0 5.0 5.0 5.0 5.0 0.5 15.0 Fragrance, preservatives Appropriate amount Appropriate amount Appropriate amount Appropriate amount Appropriate amount Appropriate amount Appropriate amount Appropriate amount

[0046] Experimental Example 1: Evaluation of sebum removal and exfoliation, and resulting user satisfaction

[0047] An experiment was conducted to verify exfoliation and the resulting user satisfaction evaluation for Examples 1 and 2 and Comparative Examples 1 to 6. The experiment was conducted on a total of 20 subjects, consisting of 10 men and 10 women. 2.0 g of each of Examples 1 and 2 and Comparative Examples 1 to 6 were applied to the bridge of the nose and rolled 30 times at the same speed and pressure. Subsequently, during the rinsing step with water, the presence of a moisturizing effect felt as the trehalose and gluconolactone scrub agents dissolved was verified. In addition, user satisfaction regarding usability was compared, and the results are shown in Table 2.

[0048] item Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Whether sebum is removed O O O O X X O O Whether or not to exfoliate O O O O X X O O Usability O O X X X X O X Whether moisturizing after use O O O O O O X O User satisfaction content content dissatisfaction dissatisfaction dissatisfaction dissatisfaction dissatisfaction dissatisfaction

[0049] Referring to Table 2 above, Examples 1 and 2 effectively removed both sebum and dead skin cells, and their usability was convenient, resulting in excellent user satisfaction. On the other hand, Comparative Examples 1 to 4 provided good moisturizing effects after use, but their viscosity was too high or too low, making them inconvenient to use. Comparative Example 5 provided good usability after use, but no moisturization was felt on the skin. Comparative Example 6 showed good sebum removal and exfoliation effects, but its viscosity was too high, resulting in poor convenience and consequently low user satisfaction.

[0051] Experimental Example 2: Cleansing Effect Comparison Experiment

[0052] Experiments were conducted to confirm the cleansing effect of Examples 1 and 2 and Comparative Examples 1 to 6.

[0053] The test was conducted on a total of 20 subjects, consisting of 10 men and 10 women. Various makeup products were applied to the back of the hand beforehand, and then 2.0 g each of Examples 1 and 2 and Comparative Examples 1 to 6 were applied to the back of the hand. After rolling 30 times at the same speed and pressure, cleansing was checked. Subsequently, water was applied and rolled 10 times, after which the moisture was wiped off. The remaining amount of makeup was evaluated by classifying it into 4 stages as follows. The results are shown in Table 4 and Figure 1.

[0054] [Evaluation Criteria]

[0055] Excellent: Less than 0–5% of makeup residue after cleansing

[0056] Excellent: Less than 5–25% of makeup residue after cleansing

[0057] Poor: Less than 25–60% of makeup residue after cleansing

[0058] Very Poor: 60 ~ 100% of makeup residue after cleansing

[0059] item Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Cleansing power Very excellent Very excellent Bad Very excellent Bad Bad Very excellent Very excellent Final cleansing power Very excellent Very excellent Bad Very excellent Bad Bad Very excellent Very excellent

[0060] Referring to Table 3 above, Examples 1 and 2 and Comparative Examples 2, 5, and 6 showed excellent cleansing power, with the amount of makeup residue not exceeding 5% when rolled on dry hands.

[0062] Experimental Example 3: Confirmation of the degree of irritation and skin exfoliation effect due to long-term use

[0063] Experiments were conducted to determine the skin irritation and exfoliation effects when Examples 1 and 2 and Comparative Examples 1 to 6 were used for a long period.

[0064] The study was conducted on a total of 20 subjects, consisting of 10 men and 10 women. After applying Examples 1 and 2 and Comparative Examples 1 to 6 to the face for 4 weeks, the degree of irritation and exfoliation effect were assessed and are shown in Table 5, while the degree of skin damage is shown in Table 4. The degree of irritation and the skin exfoliation effect were each evaluated by classifying them into 4 levels as follows.

[0065] [Level of stimulation]

[0066] 0: No stimulation at all; 1: Almost no stimulation; 2: Slight stimulation; 3: Severe stimulation

[0067] [Skin Exfoliation Effect]

[0068] 1: Over 95% of dead skin cells removed compared to before use;

[0069] 2: Over 60% but less than 80% of dead skin cells removed compared to before use;

[0070] 3: Over 40% but less than 60% of skin dead skin cells removed compared to before use;

[0071] 4: Less than 40% of dead skin cells removed compared to before use

[0072] item Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 stimulation 1 1 1 2 1 1 1 3 Skin sebum and dead skin cell removal effect 2 2 3 1 2 2 3 1 Degree of skin damage very weak very weak very weak Very severe very weak weakness very weak Very severe

[0073] Looking at Table 4, it can be seen that when used over a long period, Examples 1 and 2 and Comparative Examples 1, 3, and 5 have little to no irritation, whereas Comparative Examples 2 to 6 have severe irritation.

[0074] In addition, regarding the skin exfoliation effect, Examples 1 and 2 and Comparative Examples 3 and 4 removed an average of 60 to 80% of dead skin cells compared to before use, whereas Comparative Examples 2 and 6 removed more than 95% of dead skin cells compared to before use, confirming that excessive exfoliation occurred. Accordingly, when checking the degree of skin damage, it was confirmed that the skin damage in Examples 1 and 2 and Comparative Examples 1, 3, and 5 was mild or very mild, while the skin damage in Comparative Examples 2 and 6 was very severe.

[0076] Foregoing, specific parts of the present invention have been described in detail. It is evident to those skilled in the art that such specific descriptions are merely preferred embodiments and do not limit the scope of the invention. Accordingly, the actual scope of the invention is defined by the appended claims and their equivalents.

Claims

Claim 1 A cosmetic composition for cleansing in an anhydrous form having a sebum removal effect, comprising, based on the total weight of the cosmetic composition, 40% to 80% by weight of caprylic / capric triglyceride as an oil, 5% to 20% by weight of HDI / trimethylolhexyl lactone crosspolymer as an oil thickener, 10% to 30% by weight of sorbes-30 tetraoleate as a surfactant, and 5% to 10% by weight of trehalose and gluconolactone as scrub agents. Claim 2 A method for preparing an anhydrous cleansing cosmetic composition comprising: a first mixing step of preparing a mixture by mixing a surfactant, Solves-30 tetraoleate, with an oil, caprylic / capric triglyceride; a second mixing step of adding an oil thickener, HDI / trimethylolhexyl lactone crosspolymer, to the first mixture and mixing; a third mixing step of adding trehalose and gluconolactone to the second mixture and mixing; and a step of adding an additive to the third mixture. Claim 3 delete Claim 4 delete Claim 5 delete

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