阅读说明：本技术 包含低共熔混合物的化妆料组合物 (Cosmetic composition comprising eutectic mixture ) 是由 姜来圭 崔基焕 高源振 金起莹 赵亨镇 于 2019-07-18 设计创作，主要内容包括：包含低共熔混合物的化妆料组合物。根据本发明的化妆料组合物通过以低共熔混合物的形态包含α-羟基酸(AHA),从而具有低刺激和优异的角质剥离效果,并且与水溶液形态的AHA相比,不仅具有优异的皮肤渗透效果,而且通过包含疏水性粉体,可以提供具有改善的剂型内低共熔混合物的分散性以及优异的稳定效果的化妆料组合物。(The cosmetic composition according to the present invention has low irritation and excellent keratolytic effect by including α -hydroxy acid (AHA) in the form of a eutectic mixture, and has not only excellent skin penetration effect compared to AHA in the form of an aqueous solution, but also can provide a cosmetic composition having improved dispersibility of the eutectic mixture in a dosage form and excellent stabilizing effect by including hydrophobic powder.)

1. A cosmetic composition includes a eutectic mixture (eutectoid) containing α -hydroxy acid (AHA), and a hydrophobic powder.

2. The cosmetic composition according to claim 1, wherein the α -hydroxy acid is one or more selected from the group consisting of lactic acid (lactic acid), citric acid (citric acid), malic acid (malic acid), tartaric acid (tartaric acid), mandelic acid (mandelic acid), and glycolic acid (glycolic acid).

3. The cosmetic composition according to claim 1 or 2, wherein the eutectic mixture comprises α -hydroxy acid and one or more ingredients selected from the group consisting of carbohydrate, polyol, carbonyl compound, amino acid, carboxylic acid and derivatives thereof.

4. The cosmetic composition according to any one of claims 1 to 3, wherein the α -hydroxy acid is contained in an amount of 10 to 95 parts by weight based on 100 parts by weight of the total eutectic mixture.

5. The cosmetic composition according to any one of claims 1 to 4, wherein the eutectic mixture is contained in an amount of 0.0001 to 10 parts by weight, relative to the total weight of the composition.

6. The cosmetic composition according to any one of claims 1 to 5, wherein the eutectic mixture is contained in an amount of 0.001 to 8 parts by weight, relative to the total weight of the composition.

7. The cosmetic composition according to any one of claims 1 to 6, wherein the eutectic mixture is contained in an amount of 0.01 to 5 parts by weight, relative to the total weight of the composition.

8. The cosmetic composition according to any one of claims 1 to 7, wherein the eutectic mixture is contained in an amount of 0.1 to 3 parts by weight, relative to the total weight of the composition.

9. The cosmetic composition according to any one of claims 1 to 8, wherein the eutectic mixture is contained in an amount of 0.5 to 1 part by weight, relative to the total weight of the composition.

10. The cosmetic composition according to any one of claims 1 to 9, wherein the hydrophobic powder is selected from the group consisting of (meth) acrylic polymers, lactone polymers, polystyrene, polyolefin polymers, and copolymers thereof; and hydrophobic silica.

11. The cosmetic composition according to any one of claims 1 to 10, wherein the hydrophobic powder is selected from the group consisting of an alkyl ester of (meth) acrylic acid having an alkyl group having 1 to 4 carbon atoms, a caprolactone-based polymer, polystyrene, a polyurethane-based polymer, a polyethylene-based polymer, and a copolymer thereof; and one or more hydrophobic silicas selected from the group consisting of vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane crosspolymer and diphenyl polydimethylsiloxane/vinyl diphenyl polydimethylsiloxane/silsesquioxane crosspolymer.

12. The cosmetic composition according to any one of claims 1 to 11, wherein the hydrophobic powder is one or more selected from the group consisting of a methyl methacrylate crosspolymer, an HDI/trimethylol caprolactone crosspolymer, and polystyrene.

13. The cosmetic composition according to any one of claims 1 to 12, wherein the hydrophobic powder has pores formed on the surface or a hemispherical (hemi-spherical) form.

14. The cosmetic composition according to any one of claims 1 to 13, wherein the hydrophobic powder is contained in an amount of 0.1 to 30 parts by weight based on the total weight of the composition.

15. The cosmetic composition according to any one of claims 1 to 14, wherein the hydrophobic powder is contained in an amount of 0.3 to 15 parts by weight based on the total weight of the composition.

16. The cosmetic composition according to any one of claims 1 to 15, wherein the hydrophobic powder is contained in an amount of 0.5 to 10 parts by weight based on the total weight of the composition.

17. The cosmetic composition according to any one of claims 1 to 16, wherein the hydrophobic powder is contained in an amount of 1 to 5 parts by weight based on the total weight of the composition.

18. The cosmetic composition according to any one of claims 1 to 17, further comprising an oil phase component.

19. The cosmetic composition according to any one of claims 1 to 18, wherein the eutectic mixture is used as an inner phase and the oil phase component is used as an outer phase.

20. The cosmetic composition according to any one of claims 1 to 19, wherein the cosmetic composition contains a eutectic mixture in the oil phase component.

21. The cosmetic composition according to any one of claims 1 to 20, wherein the cosmetic composition is in an anhydrous form.

Technical Field

The present invention relates to a cosmetic composition comprising a eutectic mixture, and more particularly, to a cosmetic composition having low irritation and excellent keratolytic effect by including α -hydroxy acid in the form of a eutectic mixture.

Background

α -hydroxy acid (α -hydroxy acid, hereinafter abbreviated as AHA) is one of the ingredients generally used for softening or removing hyperkeratotic skin layers, and shows skin improvement effects of promoting metabolism of the cutin (turnover), synthesizing collagen, enhancing skin moisturization, relieving fine lines, treating and preventing acne, etc. most of AHA is excellent in skin permeation and skin improvement effects due to low pH, but is difficult to use at a high content due to skin irritation such as itch, sting, burning, etc. and various inflammatory stimuli such as erythema, edema, etc. caused by low pH.

On the other hand, the eutectic (eutectic) phenomenon is a phenomenon in which the melting point is lowered after two or more substances are mixed, and each component contained in the above mixture is in a solid state at normal temperature, but when the mixture is produced, the mixture is not crystallized by van der waals interaction or hydrogen bonding between the components, and is an anhydrous solution existing as a liquid at room temperature. In this regard, if AHA is selected as one of the components contained in the above mixture, the liquid phase in a state where water has been removed can be obtained. AHA can be used with low irritation because it does not ionize in an anhydrous state and thus does not show acid (acid) characteristics, and is very advantageous for skin penetration because it is uncharged.

However, there is a problem that such a eutectic mixture cannot be stably present in cosmetics. When a protic solvent (hydrogen bond-forming solvent) capable of forming a hydrogen bond is added to a composition including the eutectic mixture, the solvent interacts with each constituent element of the eutectic mixture (hydrogen bond formation), thereby hindering the bonding between the components of the eutectic mixture, and thus it is difficult to maintain the characteristics of the eutectic mixture. In addition, although the cosmetic comprising the eutectic mixture conforms to the anhydrous formulation, most of the eutectic mixtures have a specific gravity greater than that of water, and thus precipitation occurs when mixed with oil, thereby having a problem in that it is difficult to uniformly disperse in a low-viscosity oil phase. In order to solve this problem, conventionally, a hydrophilic powder is added to a composition, but a eutectic mixture having hydrophilicity adsorbs and aggregates on the surface of the hydrophilic powder, thereby causing a problem that uniform dispersion is difficult.

Disclosure of Invention

Therefore, in this context, the present inventors studied and developed a cosmetic composition comprising AHA while improving the problem of irritation due to low pH and the stability of the dosage form, thereby completing the present invention.

Problems to be solved by the invention

The present inventors have conducted studies to develop a cosmetic composition containing AHA and improving the problems caused by low pH, and have confirmed that the AHA in the eutectic mixture exhibits the AHA effect without skin irritation by adding AHA in the form of the eutectic mixture, and that the eutectic mixture can be stably dispersed in a dosage form by adding hydrophobic powder, thereby completing the present invention.

Accordingly, an object of the present invention is to provide a cosmetic composition comprising AHA in the form of a eutectic mixture, thereby having excellent exfoliating effect, low irritation, and excellent formulation stability.

Means for solving the problems

As a means for solving the above problems, the present invention provides a cosmetic composition comprising

Eutectic mixture containing α -hydroxy acid, and hydrophobic powder.

Hereinafter, the constitution of the present invention will be described in detail.

The cosmetic composition of the present invention includes a eutectic mixture containing α -hydroxy acid.

In the present invention, the α -hydroxy acid (α -hydroxy acid, AHA) is a generic term for a compound having an alcohol group (alcoho group) or a hydroxyl group (hydroxyl group) added to the α carbon of carboxylic acid, and it is effective for reducing the formation of keratinocyte ion bonds to eliminate hyperkeratosis or promote the formation of new cells, thereby shortening the cycle of keratinization process that is lengthened with skin aging, and promoting the activity of skin cells, and thus improving skin.

In one embodiment, the AHA may be lactic acid (lactic acid). The lactic acid has a small molecular weight in AHA and allows rapid skin permeation, and thus can rapidly achieve a desired AHA effect.

In the present invention, the eutectic mixture refers to a mixture of two or more solid or liquid substances, two compounds having a high melting point are mixed to form intermolecular hydrogen bonds, and have a liquid state at normal temperature. In the present invention, the above eutectic mixture may be used in combination with the term having the same meaning as "eutectic solvent".

The content of the AHA may be 10 to 95 parts by weight with respect to 100 parts by weight of the total eutectic mixture. If the content of the AHA is less than 10 parts by weight, the desired effect cannot be exhibited, and if the content exceeds 95 parts by weight, a problem of skin irritation may occur.

In the present invention, the eutectic mixture may be prepared by mixing the AHA with a component capable of binding to the AHA by a hydrogen bond or van der Waals interaction, in which case the AHA may be used as a Hydrogen Bond Donor (HBD), and the component capable of binding to the AHA may be used as a Hydrogen Bond Acceptor (HBA). As the component capable of binding to the AHA, there may be mentioned a carbohydrate (sugar), a polyol, a carbonyl compound, an amino acid, a carboxylic acid or a derivative thereof, but not limited thereto, for example, there may be mentioned a monosaccharide such as glucose (glucose), galactose (galactose) or fructose (fructose), a disaccharide such as sucrose (sucrose), lactose (lactose), maltose (maltose) or trehalose (trehalose), a polysaccharide such as a dextrin (dextrin), soluble starch (soluble starch), amylopectin (glycine), cysteine (cysteine) or cysteine (cysteine), cysteine (arginine), cysteine (cysteine), cysteine (arginine), cysteine (serine, cysteine), cysteine (arginine), cysteine (serine, cysteine), cysteine (cysteine), cysteine (serine, cysteine), cysteine (cysteine) (arginine), cysteine) (3626), cysteine (serine, cysteine), cysteine (serine, cysteine), cysteine (serine, cysteine), cysteine (serine, cysteine.

In one embodiment, the component that forms hydrogen bonds with AHA to make the eutectic mixture may be trimethylglycine (betaine).

The eutectic mixture according to the present invention may be prepared by selecting any method commonly used by those skilled in the art, and exemplary methods of manufacturing the eutectic mixture are as follows:

i) a method in which the component having the lowest melting point among AHA and the components forming hydrogen bonds with AHA is heated to a temperature at which the above components melt to form a liquid phase, and then the remaining components are dissolved in the above molten liquid and the mixture is cooled,

ii) a method of dissolving AHA and a component which forms a hydrogen bond with AHA in a solvent, and then removing the solvent using a difference in boiling point by freeze-drying or an evaporator (evaporator).

The solvent that can be used for producing the eutectic mixture is not particularly limited as long as it is a solvent capable of dissolving the AHA and the component that forms a hydrogen bond with the AHA. In addition, the above solvent may use a non-solvent portion such as water, alcohol, polyethylene glycol, ethyl octanoate, propylene glycol laurate, diethylene glycol monoethyl ether, tetraethylene glycol dimethyl ether, triethylene glycol monoethyl ether and the like as an auxiliary solvent, but is not limited thereto.

The eutectic mixture according to the present invention can obtain a liquid phase in a state where water has been removed by selecting one of the constituent components as AHA. AHA can be used with low irritation because it does not ionize in an anhydrous state and thus does not show acid (acid) characteristics, and can show a favorable effect on skin penetration because it is uncharged.

The content of the above eutectic composition may be 0.0001 to 10 parts by weight, for example, 0.001 to 8 parts by weight, 0.01 to 5 parts by weight, 0.1 to 3 parts by weight, 0.5 to 1 part by weight, 0.0001 to 8 parts by weight, 0.0001 to 5 parts by weight, 0.0001 to 3 parts by weight, 0.0001 to 1 part by weight, 0.0001 to 0.5 part by weight, 0.001 to 10 parts by weight, 0.01 to 10 parts by weight, 0.1 to 10 parts by weight, 0.5 to 10 parts by weight, 1 to 10 parts by weight, relative to the total weight of the cosmetic composition.

However, since the eutectic mixture as described above has a specific gravity greater than that of water, precipitation occurs when mixed with oil, and it is difficult to uniformly disperse in an oil phase. In order to solve this problem, powder is used so that the above eutectic mixture stably exists in the oil-containing composition, but when the powder has hydrophilicity, the eutectic mixture adsorbs and agglomerates on the surface of the hydrophilic powder, and there is a problem in that uniform dispersion is difficult.

In contrast, the cosmetic composition of the present invention contains a hydrophobic powder.

In the present invention, the hydrophobic powder may include a dispersion stabilizer for stably dispersing the eutectic mixture in the composition. The hydrophobic powder may be used in any form, regardless of its shape (spherical, needle-like, flake-like), particle diameter (fine particles, pigments, etc.), particle structure (porous, non-porous, etc.), as long as it is generally a powder having hydrophobicity which can be used in a cosmetic composition. The hydrophobic powder may be, but is not limited to, (meth) acrylic polymers, lactone polymers, polystyrene, polyolefin polymers or copolymers thereof, or hydrophobic silica. For example, the hydrophobic powder may be powder such as methyl methacrylate crosspolymer, HDI/trimethylol caprolactone crosspolymer, polystyrene, hydrophobic silica, polyurethane, polyethylene, vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane crosspolymer, or diphenyl polydimethylsiloxane/vinyl diphenyl polydimethylsiloxane/silsesquioxane crosspolymer, but is not limited thereto.

In one embodiment, the hydrophobic powder may be a methyl methacrylate crosspolymer, an HDI/trimethylol caprolactone crosspolymer, or polystyrene.

The hydrophobic powder contained in the cosmetic composition of the present invention may have a form in which pores are not formed on the surface (non-porous), a form in which pores are formed on the surface (porous), or a form in which the powder has a hemispherical shape (hemi-spherical). In the present invention, the porous powder or hemispherical powder as described above has a large volume per unit weight, and therefore has an excellent effect of improving dispersion in a dosage form, and has an excellent oil absorption capacity as compared with non-porous powder, and thus increases the viscosity of oil, and therefore can exhibit an excellent effect as a dispersion stabilizer for stably dispersing a eutectic mixture in a composition.

The content of the above powder may be 0.1 to 30 parts by weight, for example, 0.3 to 15 parts by weight, 0.5 to 10 parts by weight, 1 to 5 parts by weight, 0.1 to 15 parts by weight, 0.1 to 10 parts by weight, 0.1 to 5 parts by weight, 0.3 to 30 parts by weight, 0.5 to 30 parts by weight, 1 to 30 parts by weight, relative to the total weight of the cosmetic composition.

The cosmetic composition according to the present invention may further comprise an oil phase component. The oil phase component is contained in the composition and is present in the outer phase of the eutectic mixture, thereby contributing to the stable presence of the eutectic mixture in the composition. That is, the cosmetic composition according to the present invention may be a formulation containing a eutectic mixture in an oil phase component.

The oil phase component may contain one or more of oil or wax. The above oils and waxes may be used as all ingredients generally used in the art as ingredients of cosmetics. For example, the oil may be a silicone oil, an ester oil, a triglyceride oil, a hydrocarbon oil, or a vegetable oil, and one or more of these components may be used in combination as necessary.

For example, as the silicon-based oil, a silicon-based fluid oil, a silicon-based crosslinked polymer dispersed in an oil, or the like can be used. For example, as the silicon-based fluid oil, cyclopentasiloxane, cyclohexasiloxane, cycloheptasiloxane, cyclomethicone, cyclotetrasiloxane, cyclotrisiloxane, polydimethylsiloxane, octyldimethicone, octanoylpolymethicone, cetearylmethylsiloxane, cetylmethicone, hexylmethicone, lauryl methicone, myristylmethicone, phenyl methicone, stearyl dimethicone, trifluoropropyl methicone, cetyl dimethicone, diphenylsiloxyphenyl trimethicone, dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, methylpolymethicone, or phenyl trimethicone, and the like can be used. The silicone oil component may be used alone or in combination of two or more oils. As the silicon-based crosspolymer, a polydimethylsiloxane/vinylpolydimethylsiloxane crosspolymer, a polydimethylsiloxane PEG-10/15 crosspolymer or a PEG-12 polydimethylsiloxane/PPG-20 crosspolymer may be used, but not limited thereto.

As ester oils, ascorbyl palmitate, ascorbyl linoleate, ascorbyl stearate, diisostearyl malate, benzyl benzoate, benzyl laurate, butanediol dicaprylate/dicaprate, butanediol diisononanoate, butanediol laurate, butanediol stearate, butyl isostearate, cetearyl isononanoate, cetearyl nonanoate, cetyl octanoate, cetyl ethylhexanoate, cetyl isononanoate, ethylhexanol octanoate/decanoate, ethylhexyl isononanoate, ethylhexyl isostearate, ethylhexyl laurate, hexyl laurate, octyldodecyl isostearate, isopropyl isostearate, isostearyl isononanoate, isostearyl isostearate, isocetyl ethylhexanoate, neopentyl glycol dicaprate, diethyl hexanoate, neopentyl glycol dicaprate, and mixtures thereof, Neopentyl glycol diisononanoate, neopentyl glycol diisostearate, pentaerythritol stearate, pentaerythritol tetraethylhexanoate, dipentaerythritol hexaoleate, polyglycerol-2 diisostearate, polyglycerol-2 sesquiisostearate, polyglycerol-2 isostearate, polyglycerol-2 tetraisostearate, polyglycerol-2 triisostearate, polyglycerol-3 diisostearate, polyglycerol-3 isostearate, polyglycerol-4 diisostearate, polyglycerol-4 isostearate, polyglycerol-6 diisostearate, polyglycerol-6 sesquiisostearate, or triisooctanoic acid glyceride, and the like.

As the triglyceride oil, triglyceride of C8-12 acid, triglyceride of C12-18 acid, caprylic/capric/triglyceride, caprylic/capric/lauric triglyceride, triglyceride of C10-C40 isoalkanoic acid, triglyceride of C10-C18, glycerol triacetyl hydroxystearate, soybean glyceride, behenyl alcohol, tridecanol, triisocaprylic acid glyceride, triheptanoin, triisostearin, tripalmitin or tristearin can be used.

As the hydrocarbon-based oil, mobile paraffin (liquid paraffin, mineral oil), paraffin, vaseline, microcrystalline wax, squalene, or the like can be used.

As the vegetable oil, avocado oil, wheat germ oil, rosehip oil, shea butter, almond oil, olive oil, macadamia nut oil, argan oil, meadowfoam oil, sunflower oil, castor oil, camellia oil, corn oil, safflower oil, soybean oil, rapeseed oil, macadamia nut oil, jojoba oil, palm kernel oil, or coconut oil can be used.

As the wax, any of hydrocarbon-based waxes, vegetable waxes, silicone waxes, and the like generally used in cosmetics can be used. For example, candelilla wax, carnauba wax, rice wax, beeswax, lanolin, ozokerite, ceresin, paraffin wax, microcrystalline wax, C30-C45 alkyl dimethylsilyl polypropylsilsesquioxane, ethylene/propylene copolymer, or polyethylene wax may be included, but not limited thereto.

The content of the above oil phase component is not particularly limited, and may be contained in the composition in a remaining content other than the above eutectic mixture and hydrophobic powder.

The cosmetic composition of the present invention may further comprise various ingredients that can be used in general cosmetics, such as a moisturizing agent, an ultraviolet ray blocking agent, a neutralizing agent, a thickening agent, a perfume, a preservative, an antioxidant or a pigment.

The cosmetic composition according to the present invention may also be manufactured in any formulation that is generally manufactured in the art. For example, the above cosmetic composition may have the following formulation: a lotion such as a skin softening lotion or a nourishing lotion, a spray-type lotion, a lotion such as a face lotion, a body lotion, a cream such as a nourishing cream, a moisturizing cream, an eye cream, a stick, essence, a makeup ointment, a spray, a gel, a mask, a sunscreen cream, a makeup base cream, a liquid-type or spray-type foundation, a powder, a makeup remover such as a face wash, a makeup remover oil, a cleanser such as a face wash, a soap, a shower gel, or the like, but is not limited thereto.

The cosmetic composition of the present invention can be used according to conventional methods of use, and the number of uses thereof can be changed according to the skin condition or preference of the user.

The advantages and features of the present invention and methods for realizing them will be apparent with reference to the experimental examples and production examples described in detail later. However, the present invention is not limited to the experimental examples and manufacturing examples disclosed below, but may be embodied in many different forms and provided only for the purpose of thorough disclosure of the present invention and to fully explain the scope of the present invention to those skilled in the art to which the present invention pertains.

Advantageous effects

The cosmetic composition according to the present invention has low irritation and excellent keratolytic effect by including α -hydroxy acid (AHA) in the form of eutectic mixture, and has not only excellent skin penetration effect compared to AHA in the form of aqueous solution, but also can provide a cosmetic composition having improved dispersibility of eutectic mixture in a dosage form and excellent stabilizing effect by adding hydrophobic powder.

Drawings

Fig. 1 shows the effect of stabilizing the dispersion according to the form of the hydrophobic powder contained in the dosage form, as observed from the cross section of the cosmetic.

Fig. 2 is a graph comparing the degree of skin penetration of cosmetics comprising lactic acid in the form of an aqueous solution and lactic acid in the form of a eutectic mixture.

Fig. 3 is a graph comparing the degree of dermal penetration of cosmetics including lactic acid in the form of an aqueous solution and lactic acid in the form of a eutectic mixture.

Fig. 4 is a graph comparing the keratolytic effect over time of a cosmetic composition comprising lactic acid in the form of an aqueous solution and lactic acid in the form of a eutectic mixture.

Fig. 5 is a graph comparing the degree of irritation with time of cosmetics comprising lactic acid in the form of an aqueous solution and lactic acid in the form of a eutectic mixture.

Detailed Description

Hereinafter, the present invention will be described in detail by the following examples. However, the following examples are merely illustrative of the present invention, and the contents of the present invention are not limited to the following examples.

Preparation example preparation of eutectic mixture of lactic acid

The lactic acid eutectic mixture was produced by the following method.

i) A eutectic mixture of lactic acid and betaine was made. Specifically, the following are used: after lactic acid and betaine were sufficiently mixed so that the molar ratio thereof was 2:1, stirring was carried out at a temperature of 70 ℃ at a certain rate until it became a transparent liquid.

ii) lactic acid and betaine were sufficiently mixed so that the molar ratio thereof was 2:1, then a small amount of water was added and dissolved into a completely transparent liquid, and then freeze-dried for 12 hours or more to remove water.