Cosmetic composition using polyol having lamellar liquid crystal structure

Abstract

This invention relates to a cosmetic composition using a polyol having a layered liquid crystal structure, which forms a stable layered liquid crystal structure by comprising a polyol, a surfactant, a higher alcohol, and a thickener. Furthermore, the high polyol content enables excellent moisture retention and enhances long-lasting moisturizing properties.

Description

Technical Field

[0001] This patent application claims priority to Korean Patent Application No. 10-2023-0169075, filed with the Korean Intellectual Property Office on November 29, 2023, the disclosure of which is incorporated herein by reference.

[0002] This invention relates to a cosmetic composition using a polyol having a layered liquid crystal structure. Background Technology

[0003] In modern industry, skin is not only an important research subject in the cosmetics industry, but also in the food, pharmaceutical and biotechnology industries. In recent years, with the development of the cosmetics and pharmaceutical fields, in addition to functional cosmetics such as skin whitening, wrinkle improvement and UV protection, the derma cosmetics industry for skin health is also growing rapidly.

[0004] With increasing attention to functional cosmetics and market expansion, research and development are underway on various cosmetic formulations for improving skin. In particular, efforts are being made to enhance the skin's barrier function by utilizing ceramides to retain moisture, and to develop liposomes and liquid crystals containing effective substances that can penetrate the skin's epidermis.

[0005] Liquid crystal is a phase that simultaneously possesses the properties of both solid and liquid, also known as a mesophase, a term derived from "meso" meaning "intermediate" and "morphe" meaning "state." In the cosmetics industry, liquid crystal is a stabilization technology that combines two immiscible liquids to form a colloidal emulsion. However, with technological advancements, it is increasingly being developed to protect the skin barrier and enhance skin absorption efficiency. In recent years, liquid crystal technology has been used to realize various dosage forms in cosmetics and provide multiple benefits to the skin.

[0006] Liquid crystals are formed through surfactants, and their morphology depends on the curvature and critical packing parameter (CPP) resulting from molecular orientation. When a surfactant dissolves in another solvent, hydrophilic molecules align towards the water side and hydrophobic molecules towards the outer surface through adsorption. Subsequently, as the surfactant concentration continues to increase, the solution surface becomes saturated with surfactant, and the surface tension no longer decreases. The hydrophilic molecules of the surfactant align outwards, and the hydrophobic molecules align inwards, forming spherical aggregates, i.e., micelles. The minimum concentration of surfactant required to form micelles is called the critical micelle concentration (CMC). When the surfactant concentration exceeds the CMC, the critical packing parameter (CPP) increases, leading to the formation of lamellar, cubic, or hexagonal lyotropic liquid crystals, ultimately resulting in reverse micelles.

[0007] Lamellar liquid crystal structures possess advantages such as high emulsification stability, adjustable release of active ingredients like drugs, ease of preparation, excellent user experience, and sustained moisturizing effects, leading to their widespread application in cosmetics and pharmaceuticals. Lamellar liquid crystal structures have a sheet-like structure composed of phospholipids, oily films, and aqueous films, similar to the intercellular lipid structure of the stratum corneum of the skin's epidermis, and are believed to prevent skin moisture evaporation and maintain hydration.

[0008] In the case of ordinary cosmetic emulsions, when the cosmetic is an oil-in-water (O / W) emulsion, body temperature causes the water in the outer phase to evaporate after application to the skin, disrupting the emulsion balance and weakening its moisturizing effect. While oil-in-water (W / O) emulsions have the advantage of maintaining moisturizing power, they suffer from a greasy feel when applied to the skin, resulting in a poor user experience. Layered liquid crystal structures, however, offer a solution that addresses the drawbacks of both oil-in-water and oil-in-water emulsions.

[0009] In cosmetics, ceramides are used to enhance moisturizing power by using a laminar liquid crystal structure. However, ceramides have poor stability, and their emulsification stability decreases when forming a laminar liquid crystal structure. Therefore, when used in high concentrations, they cannot form a liquid crystal morphology, resulting in problems such as the use of large amounts of surfactants. As a result, there is an increasingly urgent need to develop new formulations that can both form a stable laminar liquid crystal structure and improve moisturizing and skin-soothing effects. Summary of the Invention

[0010] [The problem the invention aims to solve]

[0011] To address the aforementioned problems, the present invention aims to provide a cosmetic composition having a layered liquid crystal structure, which, by using a high content of polyols, exhibits excellent moisture retention and enhances long-lasting moisturizing properties.

[0012] [Methods used to solve problems]

[0013] To achieve the above objectives, the present invention provides a cosmetic composition having a layered liquid crystal structure, the composition comprising a polyol, a surfactant, a higher alcohol, and a thickener.

[0014] [Invention Effects]

[0015] The cosmetic composition of the present invention, which utilizes polyols to form a layered liquid crystal structure, comprises polyols, surfactants, higher alcohols, and thickeners to form a stable layered liquid crystal structure. Furthermore, due to the high content of polyols, it exhibits excellent moisture retention and improved moisturizing longevity. Attached Figure Description

[0016] Figure 1 The images show observations of an optical microscope (Example 1: A; Example 3: C and Example 4: E) and a polarizing microscope (Example 1: B; Example 3: D and Example 4: F) of an embodiment of the present invention (Example 1, Example 3 and Example 4).

[0017] Figure 2 The images show observation photographs of an optical microscope (Comparative Example 1: A and Comparative Example 2: C) and a polarizing microscope (Comparative Example 1: B and Comparative Example 2: D) of a comparative example (Comparative Example 1 and Comparative Example 2) of the present invention.

[0018] Figure 3 The appearance of the compositions prepared in Example 4 and Comparative Example 2 after being stored at low temperature (4°C) for three months is shown to compare the stability of the liquid crystals.

[0019] Figure 4 This is a graph showing the change in skin moisture content over time in an embodiment (Example 2 and Example 4) and a comparative example (Comparative Example 1) of the present invention.

[0020] Figure 5 This is a diagram comparing the skin-soothing effects of an embodiment (Example 2 and Example 4) and a comparative example (Comparative Example 1) of the present invention. Detailed Implementation

[0021] The invention relates to a cosmetic composition having a layered liquid crystal structure comprising a polyol, a surfactant, a higher alcohol, and a thickener. [Specific Implementation Examples]

[0023] The present invention will now be described in detail.

[0024] This invention relates to a cosmetic composition having a layered liquid crystal structure comprising polyols, surfactants, higher alcohols and thickeners.

[0025] In this invention, the "lamellar liquid crystal structure" is a multi-layered emulsion morphology formed by molecular crystallization into micelles in a prescribed arrangement, which can have an oil phase and an aqueous phase stacked sequentially to form a blocky structure. In the cosmetic composition of this invention, the lamellar liquid crystal structure can enhance skin moisturizing ability by containing a large amount of water.

[0026] In this invention, "polyol" refers to a raw material used in the preparation of cosmetics, specifically an aliphatic compound with a polyol structure, meaning that its molecular structure contains two or more polar hydroxyl groups (-OH). Typically, polyols dissolve water-insoluble organic solvents used in cosmetic production and are used as preservatives due to their bactericidal effects. When applied to the skin, they form a skin film, thereby preventing moisture evaporation and reducing the viscosity of the formulation. In this invention, the polyol content is relatively high to stably maintain the laminar liquid crystal structure while increasing moisture retention capacity.

[0027] In this invention, the number of carbon atoms in the polyol can be any one or more from C3 to C6, but is not limited thereto. Polyols with a number of carbon atoms from C3 to C6 have a molecular weight suitable for skin absorption, thus exhibiting excellent skin affinity and superior moisturizing power. Specifically, the polyol can be one or more selected from the group consisting of glycerol (C3), propylene glycol (C3), methylpropylene glycol (C4), 2,3-butanediol (C4), 1,2-hexanediol (C6), butylene glycol (C4), pentanediol (C5), diglycerol (C6), and dipropylene glycol (C6).

[0028] In this invention, based on the total weight of the composition, the polyol may contain 5% to 50% by weight, 5% to 45% by weight, 5% to 40% by weight, 5% to 35% by weight, 10% to 50% by weight, 10% to 45% by weight, 10% to 40% by weight, 10% to 35% by weight, 15% to 50% by weight, 15% to 45% by weight, 15% to 40% by weight, 15% to 35% by weight, 20% to 50% by weight, 20% to 45% by weight, 20% to 40% by weight, 20% to 35% by weight, 25% to 50% by weight, 25% to 45% by weight, 25% to 40% by weight, 25% to 35% by weight, 28% to 35% by weight, 28% to 34% by weight, for example, it may contain 30% by weight, 28.5% by weight, or 33.5% by weight. When the polyol exceeds the above range, it may lead to a decrease in the long-term storage stability of the composition.

[0029] In this invention, the polyol may be, for example, any one or more of glycerol, pentanediol, 1,2-hexanediol and dipropylene glycol.

[0030] In one embodiment of the present invention, the weight ratio of the glycerol and the dipropylene glycol constituting the polyol may be 1:3 to 3:1, 1:2 to 2:1, for example, 1:2.

[0031] In this invention, "surfactant" refers to an amphiphilic substance that simultaneously possesses both hydrophilic and hydrophobic portions within its molecular structure. In this invention, the surfactant, after dispersion, can form a laminar liquid crystal through a micellar structure.

[0032] In this invention, the surfactant can be any one or more of the olive oil ester series and the oleate series, but is not limited thereto. Specifically, the surfactant can be one or more selected from the group consisting of cetearyl olive oil ester, stearyl olive oil ester, sorbitan olive oil ester, sorbitan oleate, sorbitan stearate, sorbitan isostearate, sorbitan laurate, sorbitan sesquioleate, and sorbitan caprylate.

[0033] In this invention, the surfactant may be, for example, cetearyl oleoresinate and stearyl oleoresinate. In one embodiment of this invention, the weight ratio of cetearyl oleoresinate to stearyl oleoresinate in the surfactant may be 3:2.

[0034] In this invention, the surfactant may be one or more selected from the group consisting of glyceryl stearate, hydrogenated lecithin, polyglycerol-2 triisostearate, polyglycerol-3 distearate, polyglycerol-3 ricinoleate, polyglycerol-4 oleate, polyglycerol-4 laurate, polyglycerol-4 decanoate, polyglycerol-6 oleate, polyglycerol-6 laurate, polyglycerol-10 stearate, polyglycerol-3 methylglucose distearate, cetearyl glucoside, and glyceryl monostearate.

[0035] In this invention, based on the total weight of the composition, the surfactant may comprise 0.1 wt% to 10 wt%, 0.1 wt% to 8 wt%, 0.1 wt% to 6 wt%, 0.1 wt% to 4 wt%, 0.5 wt% to 10 wt%, 0.5 wt% to 8 wt%, 0.5 wt% to 6 wt%, 0.5 wt% to 4 wt%, 1 wt% to 10 wt%, 1 wt% to 8 wt%, 1 wt% to 6 wt%, 1 wt% to 4 wt%, 2 wt% to 10 wt%, 2 wt% to 8 wt%, 2 wt% to 6 wt%, 2 wt% to 4 wt%, for example, it may comprise 3 wt%. Specifically, as a surfactant, cetearyl oleate and stearyl oleate may be contained in 1.8 wt% and 1.2 wt% respectively. If the surfactant exceeds the above range, the hardness will increase, which may cause wax precipitation when storing cosmetics at low temperatures; if it is below the above range, the surface activity is insufficient, which may cause phase separation due to droplet aggregation.

[0036] In this invention, the higher alcohol may be one or more selected from the group consisting of cetearyl alcohol, cetyl alcohol, stearyl alcohol, lauryl alcohol, behenyl alcohol and myristyl alcohol, for example, it may be cetearyl alcohol and cetyl alcohol.

[0037] In this invention, "higher alcohols" can refer to alcohols with 12 to 22 carbon atoms. In this invention, the higher alcohols can promote the formation of lamellar liquid crystals and improve the hardness of the emulsion by enhancing the interface between the oil and aqueous phases, thereby improving physical stability.

[0038] In this invention, based on the total weight of the composition, the higher alcohol may comprise 0.1 wt% to 10 wt%, 0.1 wt% to 8 wt%, 0.1 wt% to 6 wt%, 0.1 wt% to 4 wt%, 0.1 wt% to 2 wt%, 0.2 wt% to 10 wt%, 0.2 wt% to 8 wt%, 0.2 wt% to 6 wt%, 0.2 wt% to 4 wt%, 0.2 wt% to 2 wt%, 0.5 wt% to 10 wt%, 0.5 wt% to 8 wt%, 0.5 wt% to 6 wt%, 0.5 wt% to 4 wt%, and 0.5 wt% to 2 wt%, for example, 1 wt%. If the higher alcohol exceeds the above range, the hardness increases, which may cause wax precipitation when storing cosmetics at low temperatures; if it is below the above range, poor lamellar liquid crystal formation may occur.

[0039] In one embodiment of the present invention, the weight ratio of cetearyl alcohol and cetyl alcohol constituting the higher alcohol may be 4:1.

[0040] In this invention, the thickener may be one or more selected from the group consisting of xanthan gum, carrageenan, carbomer, hyaluronic acid, polyacrylate, acrylate / C10-30 alkyl acrylate crosspolymer, ammonium acryloyl dimethyl taurate / VP copolymer, dextrin, bentonite, lithium distearate dimethyl ammonium montmorillonite, polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, hydroxyethyl cellulose, hydroxypropyl methylcellulose, sodium hyaluronate, sodium polyacryloyl dimethyl taurate, and ammonium acryloyl dimethyl taurate / VP copolymer. For example, it may be ammonium acryloyl dimethyl taurate / VP copolymer.

[0041] In this invention, based on the total weight of the composition, the thickener may comprise 0.01 wt% to 1 wt%, 0.01 wt% to 0.8 wt%, 0.01 wt% to 0.5 wt%, 0.05 wt% to 1 wt%, 0.05 wt% to 0.8 wt%, 0.05 wt% to 0.5 wt%, 0.1 wt% to 1 wt%, 0.1 wt% to 0.8 wt%, 0.1 wt% to 0.5 wt%, 0.2 wt% to 1 wt%, 0.2 wt% to 0.8 wt%, 0.2 wt% to 0.5 wt%, for example, it may comprise 0.3 wt%.

[0042] The cosmetic composition having a layered liquid crystal structure according to the present invention may further contain, in addition to the polyol, surfactant, higher alcohol, and thickener, a balance of water. In the present invention, the water serves as a solvent to form an emulsion combining an aqueous portion and an oily portion. The water may be distilled water, and the distilled water may be one or more selected from the group consisting of primary distilled water, secondary distilled water, tertiary distilled water, quaternary distilled water, and pure water.

[0043] In this invention, the composition may further comprise a titrated extract of centella asiatica (TECA), but is not limited thereto.

[0044] The quantitative extract (TECA) of Centella asiatica, commonly known as "Centella asiatica" or "tiger herb," ​​belongs to the Umbelliferae family and is a perennial creeping medicinal plant that mainly inhabits South Asia.

[0045] The quantitative extract (TECA) of Centella asiatica may contain asiaticoside, asiatic acid, and asiatic acid. The asiaticoside and asiatic acid can participate in the production and secretion of collagen, thus promoting skin regeneration and enhancing dermal elasticity.

[0046] In this invention, the quantitative extract of Centella asiatica can improve the stability of the liquid crystal structure during the formation of a layered liquid crystal structure of polyols. Generally, liquid crystals are easily formed when the solubility of the liquid crystal-forming substance is maintained at an appropriate level. In this case, the quantitative extract of Centella asiatica, being a poorly soluble substance, can effectively maintain the liquid crystal structure. Specifically, when a large amount of highly soluble polar oil is used, the wax that forms the liquid crystal dissolves completely, and no liquid crystal is produced; when a large amount of non-polar or almost non-polar hydrocarbon oil is used, liquid crystals form well; when only hydrocarbon oil is used, precipitation beyond the liquid crystal formation range may occur. In view of this, by setting an oil system with overall polarity and adding the quantitative extract of the poorly soluble Centella asiatica, the structural stability of the liquid crystal can be improved.

[0047] In this invention, based on the total weight of the composition, the quantitative extract of Centella asiatica may contain 0.01 wt% to 1 wt%, 0.01 wt% to 0.9 wt%, 0.01 wt% to 0.8 wt%, 0.01 wt% to 0.7 wt%, 0.01 wt% to 0.6 wt%, 0.05 wt% to 1 wt%, 0.05 wt% to 0.9 wt%, 0.05 wt% to 0.8 wt%, 0.05 wt% to 0.7 wt%, 0.05 wt% to 0.6 wt%, 0.1 wt% to 1 wt%, 0.1 wt% to 0.9 wt%, 0.1 wt% to 0.8 wt%, 0.1 wt% to 0.7 wt%, and 0.1 wt% to 0.6 wt%, for example, it may contain 0.5 wt%.

[0048] In this invention, the cosmetic composition having a layered liquid crystal structure may further contain oil, but is not limited thereto.

[0049] The oil may be selected from any one or more of hydrocarbon oils, ester oils, vegetable oils, and aliphatic oils. Specifically, it may be selected from any one or more of hydrocarbon oils and ester oils. More specifically, it may be selected from one or more of the group consisting of caprylic / capric triglyceride, cetyl ethylhexanoate, ethylhexyl stearate, cetyl hexanoate, dioctyl carbonate, dioctyl ether, ethylhexyl palmitate, neopentyl glycol didecanoate, pentaerythritol tetraethylhexanoate, pentaerythritol tetraisostearate, cocoyl octanoate / capric acid ester, octyl dodecanol, olive oil, grapeseed oil, macadamia nut oil, squalene, jojoba oil, castor oil, and sunflower seed oil, but is not necessarily limited thereto.

[0050] In this invention, based on the total weight of the composition, the oil may contain 0.1% to 10% by weight, 0.1% to 8% by weight, 0.1% to 6% by weight, 0.1% to 4% by weight, 0.5% to 10% by weight, 0.5% to 8% by weight, 0.5% to 6% by weight, 0.5% to 4% by weight, 1% to 10% by weight, 1% to 8% by weight, 1% to 6% by weight, 1% to 4% by weight, 2% to 10% by weight, 2% to 8% by weight, 2% to 6% by weight, 2% to 4% by weight, for example, it may contain 3.3% by weight.

[0051] The cosmetic composition having a layered liquid crystal structure according to the present invention may further comprise additives known in the art. These additives may include fragrances, preservatives, metal ion chelating agents, antioxidants, ultraviolet blocking agents, vitamins, and various extracts, etc., and may be used within a range that does not affect the stability of the composition.

[0052] Hereinafter, to facilitate understanding of the present invention, detailed descriptions will be provided through embodiments, etc. However, embodiments of the present invention can be modified in many other forms, and the scope of the present invention should not be construed as limited to the following embodiments. Embodiments of the present invention are provided to provide a more comprehensive explanation of the invention to those skilled in the art.

[0053] Throughout this specification, unless otherwise stated, for the purposes of expressing the concentration of a particular substance in "%", solid / solid is (weight / weight)%, solid / liquid is (weight / volume)%, and liquid / liquid is (volume / volume)%.

[0054]

Examples and Comparative Examples

[0055] [Preparation of Examples and Comparative Examples]

[0056] Based on the composition and content shown in Table 1 below, an emulsion cosmetic composition consisting of an aqueous phase and an oil phase was prepared.

[0057] Specifically, after weighing the aqueous phase components, heat to 90°C and disperse evenly using an agi-mixer for 10 minutes. Then, add the thickener to the aqueous phase and disperse evenly for another 5 minutes. Add the oil phase, heated to 85°C and dissolved evenly, to the aqueous phase and emulsify at 7000 rpm for 5 minutes using a homogenizer. After emulsification, when the emulsion temperature reaches 40°C, replenish the evaporated water (pure water) and add a preservative. Then emulsify at 7000 rpm for 1 minute to obtain the cosmetic composition.

[0058] Table 1

[0059]

[0060]

Experimental Example

[0061] [Experiment Example 1: Confirming whether liquid crystal has formed]

[0062] The dispersion state and size of the emulsion droplets of the compositions prepared according to Preparation Example 1 above (Examples 1, 3, and 4) and Comparative Examples (Comparative Examples 1 and 2) were compared using an optical microscope (BX51, Olympus Co., Japan) and a polarizing microscope (U-POT, Olympus Co., Japan) with a 200x objective lens. The results are shown in the present invention. Figure 1 and Figure 2 .

[0063] The results confirm that layered liquid crystals were formed in Examples 1, 3, and 4. Figure 1 Part A and Part B: Example 1; Figure 1 Parts C and D: Example 3; Figure 1 Parts E and F: Example 4).

[0064] Conversely, in Comparative Examples 1 and 2, no lamellar liquid crystal was formed, and TECA was directly precipitated ( Figure 2 Part A and Part B: Comparison Example 1; Figure 2 Parts C and D: Comparative Example 2).

[0065] These results indicate that the content of dipropylene glycol plays an important role not only in the formation of liquid crystals but also in the dissolution of TECA. In cases where TECA cannot be dissolved, it was confirmed that not only did liquid crystals not form, but TECA also precipitated out.

[0066] [Experiment Example 2: Confirming the Stability of the Liquid Crystal Structure]

[0067] After preparing the above compositions, they were stored at a low temperature (4°C) for three months and then observed. The results were as follows: Figure 3 The study confirmed that when the TECA content is 0.5%, if the dipropylene glycol content is sufficient, TECA dissolves well in the liquid crystal structure and maintains stability. Figure 3 Example 4), and if the dipropylene glycol content is insufficient relative to glycerol, TECA precipitates, thus failing to maintain the liquid crystal structure, thereby reducing stability ( Figure 3 Comparative Example 2).

[0068] [Experiment Example 3: Evaluating Moisturizing Efficacy]

[0069] To determine the immediate moisturizing effect on the skin, the compositions of Example 2, Example 4, and Comparative Example 1 were applied to the skin, and the skin hydration level was observed using an Epsilon skin moisture meter. Specifically, the compositions of Example 2, Example 4, and Comparative Example 1 were applied to the facial area of ​​5 subjects (mean age: 30.4 years) at a distance of 1.5 cm between the nasal bone and cheekbone. 2 The change in skin hydration over 8 hours was measured over a given area and shown in [the diagram / image]. Figure 4 .

[0070] The results confirm that when comparing the skin hydration level immediately after application, in Comparative Example 1, the skin hydration level increased by 170% immediately after application, while in Example 2 it increased by 193%, and in Example 4 by 254%. Regarding the duration of moisturizing effect, after 8 hours of application, the duration of moisturizing effect in Example 2 was improved by 18% compared to Comparative Example 1, and in Example 4 by 35%. This confirms that the cosmetic composition of the present invention containing a high content of polyols has excellent moisturizing duration. In particular, in Example 4, it was confirmed that TECA is stably soluble in dipropylene glycol, thereby exhibiting excellent moisturizing efficacy.

[0071] The above results confirm that cosmetic compositions containing high levels of polyols can not only instantly increase skin hydration but also maintain excellent moisturizing longevity after a specified period of time, thus exhibiting outstanding skin moisturizing effects. It can be confirmed that this effect can be further enhanced by TECA.

[0072] [Experiment Example 4: Evaluating the Soothing Effect]

[0073] To determine the immediate soothing effect of the composition of the present invention on the skin, the recovery rate after 10 minutes was compared after measuring the degree of skin redness (erythema value). First, after measuring the initial degree of skin redness at the test site, the site was peeled 10 times with D-squam tape to apply artificial stimulation, and the degree of redness after stimulation was measured immediately.

[0074] Specifically, the compositions of Examples 2, 4, and Comparative Example 1 were applied to the forearms of 5 subjects (1 male, 4 females; mean age: 28.6 years) for a distance of 1.5 cm in both width and length. 2 In terms of area, the degree of redness was measured after 10 minutes to evaluate the recovery rate of redness. The results are shown in Table 2 below. Figure 5 .

[0075] Table 2

[0076]

[0077] To confirm the recovery rate of redness, when the product was applied to the skin immediately after stimulation and measured 10 minutes later, Comparative Example 1 showed a recovery rate of 2%, while Examples 2 and 4 showed recovery rates of 10% and 14.8%, respectively (Table 2 and...). Figure 5The results show that, in terms of the recovery rate of redness, Example 2 improved by 8% and Example 4 improved by 12.8% compared with Comparative Example 1, thus confirming that the cosmetic composition of the present invention containing a high content of polyols has excellent skin-soothing effects.

[0078] In particular, in the case of the cosmetic composition containing both TECA and a high content of polyols as in Example 4, a soothing effect on redness was observed within a short period of 10 minutes, thus confirming that it has the best soothing efficacy.

[0079] The above description of the present invention is merely illustrative. Those skilled in the art will understand that it can be easily modified into other specific forms without altering the technical spirit or essential features of the invention. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

[0080] [Industrial Applicability]

[0081] The purpose of this invention is to provide a cosmetic composition having a layered liquid crystal structure, which uses a high content of polyols, thereby exhibiting excellent moisture retention and improved moisturizing longevity.

Claims

1. A cosmetic composition having a layered liquid crystal structure, wherein, The cosmetic composition comprises polyols, surfactants, higher alcohols, and thickeners.

2. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, The polyol is any one or more of C3 to C6.

3. The cosmetic composition having a layered liquid crystal structure according to claim 2, wherein, The polyol is selected from one or more of the group consisting of glycerol, propylene glycol, methyl propylene glycol, 2,3-butanediol, 1,2-hexanediol, butanediol, pentanediol, diglycerol, and dipropylene glycol.

4. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, Based on the total weight of the composition, the polyol contains 5% to 50% by weight.

5. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, The surfactant is any one or more of the olive oil ester series surfactants and the oleate series surfactants.

6. The cosmetic composition having a layered liquid crystal structure according to claim 5, wherein, The surfactant is selected from one or more of the group consisting of cetearyl oleate, stearyl oleate, sorbitan oleate, sorbitan oleate, sorbitan stearate, sorbitan isostearate, sorbitan laurate, sorbitan sesquioleate and sorbitan caprylate.

7. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, The surfactant comprises 0.1% to 10% by weight, based on the total weight of the composition.

8. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, The higher alcohol is selected from one or more of the group consisting of cetearyl alcohol, cetyl alcohol, stearyl alcohol, lauryl alcohol, behenyl alcohol and myristyl alcohol.

9. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, Based on the total weight of the composition, the higher alcohol comprises 0.1% to 10% by weight.

10. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, The thickener is selected from one or more of the following groups: xanthan gum, carrageenan, carbomer, hyaluronic acid, polyacrylate, acrylate / C10-30 alkanol acrylate crosslinking polymerization, ammonium acryloyldimethyl taurate / VP copolymer, dextrin, bentonite, lithium distearate dimethylammonium montmorillonite, polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking copolymer, hydroxyethyl cellulose, hydroxypropyl methylcellulose, sodium hyaluronate, sodium polyacryloyldimethyl taurate, and ammonium acryloyldimethyl taurate / VP copolymer.

11. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, Based on the total weight of the composition, the thickener comprises 0.01% to 1% by weight.

12. The cosmetic composition having a layered liquid crystal structure according to claim 1, wherein, The cosmetic composition further comprises a quantitative extract of Centella asiatica.

13. The cosmetic composition having a layered liquid crystal structure according to claim 12, wherein, Based on the total weight of the composition, the quantitative extract of Centella asiatica contains 0.01% to 1% by weight.

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