Aqueous cosmetic

Abstract

To provide an aqueous cosmetic containing niacinamide and tranexamic acid, the cosmetic exhibiting reduced stickiness derived from niacinamide or tranexamic acid, allowing a proper sense of substantial coating upon application, and enabling enhanced adhesion of the cosmetic to the skin.SOLUTION: An aqueous cosmetic comprises the following components (A) to (C): (A) tranexamic acid and / or niacinamide, (B) hydrophobically modified polyether urethane, and (C) plate-shaped powder, wherein the mass ratio (A) / (B) of content of component (A) to content of component (B) is 12 or more, and when the plate-shaped powder of component (C) is mica, the mica is untreated.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an aqueous cosmetic preparation. [Background technology]

[0002] Niacinamide is a water-soluble vitamin known to have whitening and anti-aging effects (e.g., Patent Document 1 and Patent Document 2). Tranexamic acid is an amino acid known to have anti-pigmentation effects (e.g., Patent Document 3).

[0003] In order to obtain the medicinal effects of niacinamide and tranexamic acids, they must be incorporated into cosmetics at a certain level. However, it is known that incorporating high concentrations of niacinamide or tranexamic acid into cosmetics can cause stickiness when applied to the skin, and measures to reduce stickiness have been investigated (e.g., Patent Document 4). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 03-020207 [Patent Document 2] Japanese Patent Application Publication No. 10-130135 [Patent Document 3] Japanese Patent Application Publication No. 01-93519 [Patent Document 4] Japanese Patent Publication No. 2023-25315 Summary of the Invention [Problem to be solved by the invention]

[0005] Water-based cosmetics and oil-in-water emulsion cosmetics (hereinafter simply referred to as water-based cosmetics) have a continuous phase composed of aqueous components, which allows for light, smooth application and a refreshing feel. Niacinamide and tranexamic acids are water-soluble drugs, so they are usually incorporated into the aqueous phase, which is the external phase of cosmetics. For this reason, the stickiness caused by niacinamide and tranexamic acids can be easily felt.

[0006] On the other hand, the thickness of a cosmetic product's application, which allows users to feel the presence of the cosmetic product on the skin without it easily breaking down when applied to the skin, is one of the sensory evaluation criteria preferred by users. Furthermore, since a cosmetic product forms a cosmetic film on the skin, the ability of the cosmetic product to adhere to the skin after spreading it on the skin is also an important factor. However, if a cosmetic product is made to have a non-sticky feel in order to reduce the stickiness caused by niacinamide or tranexamic acids, the thickness of the cosmetic product's application and the feeling of adhesion to the skin tend to decrease, and it has been difficult to achieve both of these.

[0007] Therefore, an object of the present invention is to provide an aqueous cosmetic composition containing niacinamide and / or tranexamic acids that reduces the stickiness caused by niacinamide and / or tranexamic acids, while providing an appropriate feeling of thickness when applied and ensuring high adhesion of the cosmetic composition to the skin. [Means for solving the problem]

[0008] In order to achieve the above object, the aqueous cosmetic preparation of the present invention has the following composition. 1. The following ingredients (A) to (C): (A) Tranexamic acids and / or niacinamide (B) Hydrophobically modified polyether urethane (C) Plate-shaped powder wherein the mass ratio (A) / (B) of the content of the component (A) to the content of the component (B) is 12 or more, and when the plate-like powder of the component (C) is mica, the aqueous cosmetic is untreated. 2. The aqueous cosmetic preparation according to 1., wherein the mass ratio (A) / (C) of the content of component (A) to the content of component (C) is 1 or greater. 3. The aqueous cosmetic preparation according to 1. or 2., further comprising component (D) an anionic surfactant and / or an amphoteric surfactant. 4. The aqueous cosmetic preparation according to 3., wherein the component (D) is at least one selected from the group consisting of N-alkyl-N-acyltaurine salts, N-acylamino acid salts, and phospholipids. 5. The aqueous cosmetic preparation according to any one of 1. to 4., wherein the component (C) is at least one selected from the group consisting of boron nitride, synthetic phlogopite, lauroyl lysine, and untreated mica. 6. The aqueous cosmetic preparation according to any one of 1. to 5., wherein the component (B) is a (PEG-240 / decyltetradeceth-20 / HDI) copolymer. [Effects of the Invention]

[0009] According to the aqueous cosmetic composition of the present invention, even if it contains niacinamide or tranexamic acids, it is possible to reduce the stickiness caused by niacinamide or tranexamic acids, and it is possible to provide an appropriate feeling of thickness when applied, and the cosmetic composition adheres well to the skin. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described. However, the present invention is not limited to only the following embodiments. In this specification, the range "X to Y" includes X and Y and means "X or more and Y or less." Furthermore, unless otherwise specified, operations and measurements of physical properties are performed under conditions of room temperature (20 to 25°C) and relative humidity of 45 to 55% RH. Furthermore, in this specification, when a certain component contains two or more types, the content of the component refers to the total amount of the two or more types.

[0011] The present invention relates to the following components (A) to (C): (A) Tranexamic acids and / or niacinamide (B) Hydrophobically modified polyether urethane (C) Plate-shaped powder The aqueous cosmetic contains the component (C), and when the mass ratio (A) / (B) of the component (A) to the content of the component (B) is 12 or more, and the platy powder of the component (C) is mica, the aqueous cosmetic is untreated.

[0012] According to the aqueous cosmetic of the present invention, even in an aqueous cosmetic formulated with component (A), by incorporating components (B) and (C) and incorporating a relatively small amount of component (B) compared to component (A), it is possible to reduce the stickiness caused by niacinamide and tranexamic acids, and components (B) and (C) act synergistically to provide an appropriate feeling of thickness when applied, and also to improve the feeling of adhesion to the skin.

[0013] Each component constituting the present invention will be described below. Note that, hereinafter, the aqueous cosmetic preparation will also be simply referred to as the cosmetic preparation. The cosmetic preparation of the present invention also includes quasi-drugs.

[0014] (Ingredient (A): tranexamic acids and / or niacinamide) The tranexamic acids include one or more selected from tranexamic acid and its derivatives, etc. Tranexamic acid is a type of amino acid with the chemical name trans-4-(aminomethyl)cyclohexane-1-carboxylic acid. Derivatives of tranexamic acid include tranexamic acid dimers (e.g., trans-4-(transaminomethylcyclohexanecarbonyl)aminomethylcyclohexanecarboxylic acid hydrochloride), esters of tranexamic acid and hydroquinone (e.g., trans-4-aminomethylcyclohexanecarboxylic acid 4'-hydroxyphenyl ester), esters of tranexamic acid and gentisic acid (e.g., 2-(trans-4-aminomethylcyclohexanecarbonyloxy)-5-hydroxybenzoic acid and its salts), amides of tranexamic acid (e.g., trans-4-aminomethylcyclohexanecarboxylic acid methylamide and its salts, trans-4-(p-methoxybenzoyl)aminomethylcyclohexanecarboxylic acid and its salts, trans-4-guanidinoaminomethylcyclohexanecarboxylic acid and its salts), and alkyl esters of tranexamic acid and their salts. Specific examples of alkyl esters of tranexamic acid include tranexamic acid lauryl ester, tranexamic acid myristyl ester, tranexamic acid cetyl ester, and tranexamic acid stearyl ester. Derivatives may also be in the form of salts, and examples of such salts include mineral acid salts such as hydrochloride, phosphate, sulfate, bromate, and nitrate; organic acid salts such as oxalate, lactate, and citrate; and carbonates. Tranexamic acids may be used singly or in combination of two or more.

[0015] Niacinamide, also known as nicotinic acid amide, is the amide of nicotinic acid (vitamin B3 / niacin). Niacinamide is a water-soluble vitamin and a known member of the B vitamin family. It can be extracted from natural sources (such as rice bran) or synthesized by known methods.

[0016] As component (A), one of tranexamic acids / niacinamide may be used alone, or two or more of tranexamic acids and niacinamide may be used in combination.

[0017] The content of component (A) (when two or more of tranexamic acids and niacinamide are used, the total amount) is preferably at least a certain amount, taking into consideration the efficacy of each agent, such as whitening and anti-aging effects, and is preferably at least 1% by mass, and more preferably at least 3% by mass, relative to the aqueous cosmetic. Furthermore, from the perspective of reducing stickiness, the content of component (A) is preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less, relative to the aqueous cosmetic. The content of component (A) is preferably 1 to 15% by mass, more preferably 3 to 12% by mass, and even more preferably 3 to 10% by mass, relative to the aqueous cosmetic.

[0018] (Component (B): Hydrophobically modified polyether urethane) Component (B) is preferably a hydrophobically modified polyether urethane represented by the following general formula (1).

[0019] [ka]

[0020] [In the formula, R1, R2, and R4 may be the same or different and represent hydrocarbon groups; R3 represents a hydrocarbon group which may have a urethane bond; R5 represents a linear, branched, or secondary hydrocarbon group; m is a number of 2 or more; h is a number of 1 or more; and k and n are each independently a number ranging from 0 to 1000.] In the above formula (1), R1 represents an m-valent hydrocarbon group. The hydrocarbon group represented by R1 preferably has 2 to 30 carbon atoms. The hydrocarbon group represented by R1 may contain an oxygen atom between carbon atoms. m is an integer of 2 or more, preferably 2 to 8. R2 and R4 represent divalent hydrocarbon groups which may be the same or different. R3 represents an (h+1)-valent hydrocarbon group, preferably a divalent to tetravalent hydrocarbon group. The hydrocarbon group represented by R3 preferably has 1 to 10 carbon atoms. h is preferably 1 to 3. k and n are independently numbers in the range of 0 to 1,000, and preferably both are not 0. R1, R2, and R4 are preferably alkylene groups or phenylethylene groups having 2 to 4 carbon atoms, more preferably alkylene groups having 2 to 4 carbon atoms. The hydrocarbon group for R3 is preferably an alkylene group having 1 to 10 carbon atoms, and R5 is preferably an alkyl group having 8 to 36 carbon atoms.

[0021] Examples of component (B) include polyethylene glycol-decyltetradeceth-20-hexamethylene diisocyanate copolymer and polyethylene glycol-steareth-100-hexamethylene diisocyanate copolymer, preferably one or more selected from the group consisting of (PEG-240 / decyltetradeceth-20 / HDI) copolymer (commercially available products include ADEKA NOL GT-700 and ADEKA NOL GT-730, manufactured by ADEKA Corporation) and steareth-100 / PEG-136 / HDI copolymer (commercially available product includes RHEOLUXE 811, manufactured by Elementis Japan Co., Ltd.), and more preferably (PEG-240 / decyltetradeceth-20 / HDI) copolymer.

[0022] The component (B) may be used alone or in combination of two or more types.

[0023] The content of component (B) in the aqueous cosmetic of the present invention is not particularly limited, but from the viewpoint of adhesion and the like, it is preferably from 0.01 to 1 mass%, more preferably from 0.03 to 0.5 mass%, even more preferably from 0.05 to 0.5 mass%, and even more preferably from 0.1 to 0.4 mass%.

[0024] The mass ratio (A) / (B) of component (A) to component (B) (hereinafter also simply referred to as (A) / (B)) is 12 or more. If (A) / (B) is less than 12, the amount of component (B) relative to component (A) becomes too large, resulting in a significant decrease in the feeling of adhesion. From the viewpoint of the feeling of adhesion and the like, (A) / (B) is more preferably 14 or more, and even more preferably 15 or more. There is no particular upper limit to (A) / (B), but from the viewpoint of the feeling of adhesion and the like, it may be, for example, 200 or less, 150 or less, 100 or less, or 50 or less. (A) / (B) is preferably 12 to 200, more preferably 14 to 150, and even more preferably 15 to 50.

[0025] (Component (C): Plate-like powder) The present invention further contains a platy powder as component (C). The platy powder can be uniformly dispersed in a system in which component (B) is present, and after application, it aligns uniformly within the cosmetic film formed by component (B), providing a sense of close contact with the skin. Furthermore, the interaction between the powder particles provides a sense of appropriate thickness when applied.

[0026] In this specification, plate-like powder refers to powder whose average particle diameter is larger than its average thickness, and specifically, the aspect ratio is preferably 3 or more, more preferably 5 to 100. The aspect ratio is calculated as the ratio of the average particle diameter to the average particle thickness, and is defined as aspect ratio = (average particle diameter / average thickness). The thickness is measured using an atomic force microscope to determine the difference from a reference plane, and the arithmetic mean is taken as the average thickness. Note that plate-like powder includes powders that are not only plate-shaped, but also flake-shaped, scale-shaped, and other shapes.

[0027] The average particle diameter of the plate-like powder is, for example, 1 to 30 μm. The average particle diameter of the plate-like powder is the average value obtained by randomly selecting a significant number of particles (for example, 100 particles) from an image taken with a scanning electron microscope (SEM), measuring the particle diameter of each particle, and determining the average value. The particle diameter refers to the maximum length between any two points.

[0028] Specific examples of the plate-like powder include mica (untreated; here, "untreated" refers to mica alone, not surface-treated with a surface treatment agent or composite powder with other powders), sericite, talc, plate-like barium sulfate, plate-like calcium sulfate, synthetic phlogopite, boron nitride, lauroyl lysine, plate-like alumina, borosilicate (Ca / Al), borosilicate (Ca / Na), (PET / polymethyl methacrylate) laminate, (fluoride / hydroxide / oxide) / (Mg / K / silicon), and other plate-like powders, as well as composite powders obtained by coating these plate-like powders (titanium dioxide-coated synthetic phlogopite, titanium dioxide-coated borosilicate (Ca / Al), titanium dioxide-coated borosilicate (Ca / Na), titanium dioxide-coated glass powder, and silicon dioxide / titanium oxide-coated borosilicate (Ca / Na). These plate-like powders may be used alone or in combination of two or more.

[0029] In particular, since the effects of the present application are more pronounced, it is preferable that component (C) contains at least one selected from the group consisting of boron nitride, synthetic phlogopite, lauroyl lysine, untreated mica, talc, plate-like barium sulfate, and plate-like alumina, and from the standpoints of non-stickiness, adhesion, etc., it is more preferable that component (C) contains at least one selected from the group consisting of boron nitride, synthetic phlogopite, lauroyl lysine, and untreated mica.

[0030] The plate-like powder may be surface-treated (excluding mica). Examples of surface treatments include fluorine compound treatment, silica treatment, alumina treatment, aluminum hydroxide treatment, silicone treatment (methicone treatment, hydrogen dimethicone treatment, etc.), silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, silane treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, acrylic resin treatment, and metal oxide treatment. These surface treatments may be used alone or in combination of two or more.

[0031] The amount of the surface treatment agent to be used is preferably 0.1 to 30% by mass, more preferably 0.5 to 20% by mass, and even more preferably 1 to 10% by mass, based on the untreated plate-like powder.

[0032] The surface treatment may be carried out by a conventional method. For example, a surface treatment agent and powder particles to be treated are added to a solvent, and the mixture is stirred in a ball mill or the like, and then dried, washed with water, and filtered repeatedly as necessary to remove impurities, followed by drying and pulverization to obtain the desired surface treatment. Furthermore, it is possible to simultaneously treat the surface with several types of compounds that are surface treatment agents, or to first treat the surface with one of the compounds and then treat it with another compound.

[0033] The content of component (C) in the aqueous cosmetic of the present invention is not particularly limited, but from the viewpoints of adhesion and application thickness, it is preferably 0.05 to 10% by mass, more preferably 0.05 to 7% by mass, even more preferably 0.1 to 5% by mass, even more preferably 0.5 to 5% by mass, and particularly preferably 0.5 to 4% by mass.

[0034] Furthermore, from the viewpoint of adhesion, etc., the mass ratio of component (A) to component (C), (A) / (C) (hereinafter simply referred to as (A) / (C)), is preferably at least 1. (A) / (C) is preferably 1 or more and 200 or less, more preferably more than 1 and 150 or less, even more preferably 1.4 or more and 70 or less, and is preferably 1.5 or more and 50 or less, 1.5 or more and 30 or less, or 1.5 or more and 10 or less.

[0035] (Component (D): Anionic surfactant and / or amphoteric surfactant) In this embodiment, it is preferable to further contain component (D): an anionic surfactant and / or an amphoteric surfactant, in terms of feel during use and the like.

[0036] Examples of anionic surfactants include N-alkyl-N-acyltaurate salts (e.g., having 12 to 22 carbon atoms) such as N-stearoyl-N-methyl taurate salts (e.g., Na), palmitoyl methyl taurate salts (e.g., Na), myristoyl methyl taurate salts (e.g., Na), and lauroyl methyl taurate salts (e.g., Na); stearates (e.g., Na), palmitates (e.g., Na), myristates (e.g., Na), laurates (e.g., Na), isostearates (e.g., Na), isopalmitates (e.g., Na), isomyrstates (e.g., Na), and isostearates (e.g., Na). Examples include fatty acid salts (preferably higher fatty acid salts) such as laurate (e.g., Na); phosphate ester salts such as polyoxyethylene alkyl (12-15) ether phosphate (e.g., Na), POE oleyl ether phosphate (e.g., Na), and POE stearyl ether phosphate (e.g., Na); and acylamino acid (also referred to as N-acylamino acid) salts (e.g., Na), such as lauroyl glutamate (e.g., Na), stearoyl glutamate (e.g., Na), myristoyl glutamate (e.g., Na), and dilauroyl glutamic acid lysine salt (e.g., Na). These anionic surfactants may be used alone or in combination of two or more.

[0037] Examples of amphoteric surfactants include phospholipids. Phospholipids have a structure in which fatty acids and phosphoric acid are bonded to a central skeleton of glycerin or sphingosine, and an alcohol is further ester-bonded to the phosphoric acid. Fatty acids constituting phospholipids include saturated and unsaturated carboxylic acids having 7 to 22 carbon atoms. The alcohols constituting phospholipids often contain nitrogen, such as choline, ethanolamine, inositol, and serine. Phospholipids that can be used include soybean lecithin extracted from natural soybeans or egg yolks, egg yolk lecithin, and / or hydrogenated lecithin (hydrogenated lecithin) obtained by hydrogenating these, hydrogenated soybean lecithin, hydrogenated egg yolk lecithin, and synthetic phospholipids, all of which are commonly known as phospholipids. More specifically, phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidic acid, and phosphatidylinositol can be preferably used. One or more of these can be used. Specifically, examples of phospholipids include hydrogenated soybean phospholipid, hydrogenated egg yolk phospholipid, hydrogenated phosphatidylcholine, hydrogenated phosphatidylserine, etc., and may also be lysophospholipids in which one fatty acid group has been removed from a phospholipid, or hydrogenated lysophospholipids obtained by hydrogenating such phospholipids.

[0038] The component (D) may be used alone or in combination of two or more kinds.

[0039] From the viewpoint of usability and the like, component (D) is preferably at least one selected from the group consisting of N-alkyl-N-acyltaurine salts, N-acylamino acid salts, and phospholipids, and more preferably at least one selected from the group consisting of sodium stearoylmethyl taurine and phospholipids.

[0040] The content of component (D) in the aqueous cosmetic preparation of the present invention is not particularly limited, but from the viewpoint of the effects of the present invention, it is preferably 0.05 to 5 mass %, more preferably 0.1 to 3 mass %.

[0041] (Component (E): Water) Since the present invention is an aqueous cosmetic, it typically contains water as component (E). Component (E) water is used as a solvent and makes up the balance of the above-mentioned and other components that make up the aqueous cosmetic. It is preferable that the water be free of impurities, and from this perspective, it is preferable to use RO water, deionized water, distilled water, purified water, etc.

[0042] The content of component (E) is preferably 20% by mass or more, and is preferably 90% by mass or less, 80% by mass or less, 70% by mass or less, 60% by mass or less, or 50% by mass or less.

[0043] (Component (F): Oil) The aqueous cosmetic of the present invention contains an oil as an optional component. In particular, oil-in-water emulsion cosmetics usually contain an oil.

[0044] Oils include hydrocarbons such as isododecane, isohexadecane, light isoparaffin, liquid paraffin (mineral oil), squalane, squalene, α-olefin oligomer, polybutene, liquid isoparaffin, heavy liquid isoparaffin, polyisobutylene, and hydrogenated polyisobutene, rapeseed oil, avocado oil, almond oil, apricot kernel oil, perilla oil, orange oil, olive oil, kiwi seed oil, grape seed oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, safflower oil, sage oil, soybean oil, tea seed oil, corn oil, rapeseed oil, and evening primrose oil. Animal and vegetable oils such as camellia oil, persic oil, Job's tears oil, peanut oil, sunflower oil, sunflower seed oil, grape seed oil, meadowfoam oil, rosemary oil, jojoba oil, jojoba seed oil, macadamia nut oil, lavender oil, rosehip oil, and mink oil; glyceryl tri-2-ethylhexanoate (triethylhexanoin), isotridecyl isononanoate, isononyl isononanoate, cetyl 2-ethylhexanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, octyldodecyl myristate, triethylhexanoin Glyceryl caprate, caprylic / capric triglyceride, glyceryl diisostearate, glyceryl triisostearate, decaglyceryl decaisostearate (polyglyceryl-10 decaisostearate), propylene glycol dicaprate, neopentyl glycol dicaprate, polyglyceryl triisostearate, diisostearyl malate, neopentyl glycol diethylhexanoate, polyglyceryl-10 decaisostearate, pentaerythritol tetraisostearate, pentatetra-2-ethylhexanoate Esters such as pentaerythrityl tetraethylhexanoate, dipentaerythrityl pentaisostearate, dipentaerythrityl hexa(hydroxystearate / stearic acid / rosin acid), dialkyl carbonate, tritridecyl trimellitate, bisethoxydiglycol cyclohexane-1,4-dicarboxylate, dimer dilinoleyl hydrogenated rosin condensate, alkyl benzoate (C12-15), cetyl palmitate, and diglyceryl tetraisostearate; fatty acids such as stearic acid, behenic acid, oleic acid, and isostearic acid;Higher alcohols such as oleyl alcohol, 2-octyldodecanol, 2-decyltetradecanol, isostearyl alcohol, 2-hexyldecanol, stearyl alcohol, cetostearyl alcohol, behenyl alcohol, and jojoba alcohol; dimethylpolysiloxane (dimethicone), methylhydrogenpolysiloxane, methyltrimethicone, methylphenylpolysiloxane (diphenylsiloxyphenyltrimethicone), cyclopentasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, tetramethyltetrahydrogencyclotetrasiloxane, tetramethyltetraphenylcyclotetrasiloxane, tetramethyltetratrifluoropropylcyclotetrasiloxane, pentamethylpentatrifluoropropylcyclopentasiloxane, and polyether-modified dimethylpolysiloxane. Silicone oils such as hexane, oleyl-modified dimethylpolysiloxane, polyvinylpyrrolidone-modified dimethylpolysiloxane, and alkyl-modified dimethylpolysiloxane; fluorine-based oils such as perfluoropolyether, perfluorodecane, and perfluorooctane; lanolin derivatives such as lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol; ultraviolet absorbers such as 2-ethylhexyl paramethoxycinnamate, ethylhexyl salicylate, 2-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester, methylenebisbenzotriazolyltetramethylbutylphenol, bisethylhexyloxyphenol methoxyphenyl triazine, polysilicone-15, and 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine (ethylhexyl triazone);Cocoa butter, shea butter, castor oil, hydrogenated castor oil, hydrogenated coconut oil, petrolatum, hydrogenated castor oil monostearate, hydrogenated castor oil monohydroxystearate, cholesteryl hydroxystearate, dipentaerythritol fatty acid ester, N-lauroyl-L-glutamic acid di(phytosteryl 2-octyldodecyl), N-lauroyl-L-glutamic acid di(octyldodecyl / cholesteryl / behenyl), N-lauroyl-L-glutamic acid di(octyldodecyl / phytosteryl / behenyl), macadamia Paste-like oils such as phytosteryl annatto oil fatty acid and dimer dilinoleate (phytosteryl / isostearyl / cetyl / stearyl / behenyl); waxes such as paraffin wax, ceresin wax, microcrystalline wax, polyethylene wax, Fischer-Tropsch wax, beeswax, and candelilla wax; polyethylene glycol distearate, glyceryl tribehenate, cholesterol, phytosterol, stearyl-modified polysiloxane, hydrogenated oil, and palm oil;

[0045] The content of component (F) is preferably 5% by mass or more, more preferably 10% by mass or more, and even more preferably 15% by mass or more, in order to obtain the effect of the oil agent appropriately. Furthermore, in consideration of emulsion stability, the content of component (F) is preferably 50% by mass or less, and more preferably 40% by mass or less. The content of component (F) is preferably 5 to 50% by mass, more preferably 10 to 40% by mass, and even more preferably 15 to 40% by mass.

[0046] (optional ingredient) The aqueous cosmetic preparation of this embodiment may contain other ingredients in addition to the above ingredients.

[0047] Other components include acrylic acid-based water-soluble polymers. Examples of acrylic acid-based water-soluble polymers include carboxyvinyl polymers, acrylic acid-alkyl methacrylate copolymers (e.g., acrylates / alkyl acrylate (C10-C30) crosspolymers), sodium acrylate-sodium acryloyldimethyltaurate copolymers, and alkyl acrylate-alkyl methacrylate-polyoxyethylene stearyl ether methacrylate (20E.O.) copolymers. One or more of these can be used. Among these, a combination of carboxyvinyl polymers and acrylic acid-alkyl methacrylate copolymers is preferred.

[0048] Other components may also be appropriately contained, within the scope of not interfering with the effects of the present invention, such as surfactants other than component (D) (nonionic surfactants, cationic surfactants), water-soluble polymers other than the above-mentioned acrylic acid-based water-soluble polymers, powders other than component (C), preservatives, antioxidants, alcohols, cosmetic ingredients, antibacterial agents, chelating agents (EDTA, etc.), etc.

[0049] The aqueous cosmetic of this embodiment refers to a cosmetic in which the aqueous phase is the external phase, and is preferably a solubilized type, a powder-containing two-layer type, or an oil-in-water emulsion type. Furthermore, oil-in-water emulsion cosmetics contain a higher amount of oil than solubilized types, and are therefore more likely to feel sticky due to the oil. According to the configuration of the present invention, even in the case of an oil-in-water emulsion cosmetic, stickiness is reduced, an appropriate application thickness is obtained, and a high level of adhesion is achieved. Therefore, in a preferred embodiment of the present invention, the aqueous cosmetic is an oil-in-water emulsion cosmetic.

[0050] The aqueous cosmetic composition of the present invention can be applied to makeup cosmetics such as foundations; skin care cosmetics, including sunscreen cosmetics, base cosmetics, lotions, serums, and emulsions; and is preferably applied to skin care cosmetics, which are expected to exhibit the effects of the present invention even more effectively. The aqueous cosmetic composition of this embodiment can be implemented in various forms, such as gel, emulsion (liquid), cream, semi-solid, solid, and mousse, among which a liquid form is preferred for achieving the effects of the present invention. The term "liquid" conforms to the definition of "liquid" (Article 69-2 of the Regulations Concerning the Control of Hazardous Materials). Specifically, "liquid" refers to the time it takes for the tip of the moving surface of the article to pass 85 mm from the bottom of a vertical test tube (a flat-bottomed cylindrical glass tube with an inner diameter of 30 mm and a height of 120 mm) when the test tube is turned horizontal. [Example]

[0051] The effects of the present invention will be explained using the following examples and comparative examples. In the examples, the terms "parts" and "%" may be used, but unless otherwise specified, they represent "parts by mass" or "% by mass." Unless otherwise specified, each operation is carried out at room temperature (25°C). In the following examples, the "remaining amount" in the blending amount (% by mass) means the amount that adds up to 100% by mass.

[0052] Examples 1 to 18 and Comparative Examples 1 to 8: Oil-in-water emulsions having the formulations shown in Tables 1 to 3 below were prepared.

[0053] (Manufacturing method) (1) Nos. 1-2, 16-17, 21 and a part of No. 18 were mixed and stirred to obtain a mixture. (2) No. 18 was added to the mixture obtained in (1) and mixed with stirring. (3) No. 3-4 and 20 were added to (2) and mixed and stirred. (4) The mixture obtained in (3) was heated to 70°C, and then Nos. 5-15 and 19, which had also been heated to 70°C, were added and stirred to obtain an oil-in-water emulsion.

[0054] Evaluation method 1: Thickness of the starting point A panel of 20 expert cosmetic evaluation members was asked to use an applicator (spatula) to take each sample filled in a container and apply the cosmetic to their hands. They then evaluated and scored the thickness of the applied product using the four-point rating scale below, and the average score was calculated from the total scores of all panelists for each cosmetic product, and the results were judged using the four-point rating scale below.

[0055] <4-level evaluation criteria> [Evaluation]:[Rating] The thickness of the starting point is appropriate: 3 points The thickness of the starting hand is slightly too thick or slightly too thin: 2 points Too much or too little starting material: 1 point Too much or no depth: 0 points <4-level evaluation criteria> [Judgment]: [Average score] ◎: 2.5 points or more ○: 2 points or more and less than 2.5 points △: 1 point or more but less than 2 points ×: Less than 1 point

[0056] Evaluation method 2: Adhesion A panel of 20 expert cosmetic evaluation members was asked to apply each cosmetic to the cheek using a spatula, check the adhesion to the skin, and rate it using the four-point rating scale below. The average score was calculated from the total scores of all panelists for each cosmetic, and the results were judged using the four-point rating scale below.

[0057] <4-level evaluation criteria> [Evaluation]:[Rating] Very good: 3 points Good: 2 points Neither: 1 point Bad (not felt): 0 points <4-level evaluation criteria> [Judgment]: [Average score] ◎: 2.5 points or more ○: 2 points or more and less than 2.5 points △: 1 point or more but less than 2 points ×: Less than 1 point

[0058] Evaluation method 3: Lack of stickiness on skin after application Each sample was tested by a panel of 20 experts, who each evaluated the lack of stickiness on the skin immediately after application on a four-point scale using the absolute standards below. The average score was calculated from the total scores of all panelists, and the results were judged according to the following criteria.

[0059] <4-level evaluation criteria> [Evaluation]:[Rating] No stickiness: 3 points Slight stickiness, but within acceptable limits: 2 points Sticky feeling: 1 point Very sticky: 0 points <4-level evaluation criteria> [Judgment]: [Average score] ◎: 2.5 points or more ○: 2 points or more and less than 2.5 points △: 1 point or more but less than 2 points ×: Less than 1 point The evaluation results are shown in Tables 1 to 3.

[0060] [Table 1]

[0061] [Table 2]

[0062] [Table 3]

[0063] (*1) ADEKA NOL GT-700 (ADEKA Corporation) (*2) SHP (registered trademark)-3 (plate-shaped, manufactured by JFE Mineral Co., Ltd., average particle size 5.3 μm) (*3) MICA POWDER Y-2300 (Yamaguchi Mica Co., Ltd., aspect ratio 60, average particle size 19 μm) (*4) PDM-20L (manufactured by Topy Industries, average particle size 20 μm, aspect ratio 70) (*5) Amihope (registered trademark) LL (plate, manufactured by Ajinomoto Healthy Supply Co., Ltd.) (*6) Talc EX-15 (plate-shaped, manufactured by Yamaguchi Mica Co., Ltd., average particle size 15 μm) (*7) Plate-shaped barium sulfate HL (Sakai Chemical Co., Ltd., average particle size 15 μm) (*8) Seraph YFA02050 (Kinseimatec Co., Ltd., average particle size 2 μm, aspect ratio 50) (*9) FLAMENCO GOLD 220C (BASF) (*10) MP-1133 (manufactured by Teika, spherical) (*11) Sunsphere (registered trademark) NP-200 (AGC Si-Tech Co., Ltd.) (*12) KSP-100 (spherical, average particle size 5 μm, manufactured by Shin-Etsu Chemical Co., Ltd.) (*13) Nikkol Resinol S-10 (Nikko Chemicals) (*14) CARBOPOL 1382 (manufactured by Lubrizol Japan) The oil-in-water emulsions of the Examples had reduced stickiness on the skin after application, a thick feel on application, and a strong adhesion to the skin. On the other hand, Comparative Example 1, in which (A) / (B) was less than 12, and Comparative Example 2, in which component (B) was not blended, had a significantly reduced adhesion. Comparative Example 3, in which xanthan gum was used instead of component (B), was insufficient in terms of adhesion and thickness on application, and also caused a significant stickiness on the skin after application. Comparative Example 4, in which component (C) was not blended, had a significantly reduced thickness on application and adhesion, and was also insufficient in terms of non-stickiness on the skin after application. Comparative Examples 5 to 8, in which other powders were blended instead of component (C), had a significantly reduced adhesion.

[0064] Example 19: Cream (oil-in-water type) (mass%) (1) Niacinamide (ingredient (A)) 4 (2) Sodium pyrosulfite 0.003 (3) Sodium monohydrogen phosphate 0.2 (4) Sodium dihydrogen phosphate 0.2 (5) Disodium edetate 0.02 (6) Concentrated glycerin 8 (7) Diglycerin 2.5 (8) Sodium N-stearoyl-N-methyl taurate (ingredient (D)) 0.8 (9) Purified water 26 (10) Hydrogenated soybean phospholipid (ingredient (D)) 0.3 (11) Boron nitride (*2) (component (C)) 1 (12) Lauroyl Lysine (*5) (ingredient (C)) 1 (13) 1,3-butylene glycol 10 (14) Cetostearyl alcohol 2 (15) Behenyl alcohol 1.3 (16) Cetyl palmitate 1.3 (17) Macadamia nut oil 5 (18) Heavy Liquid Isoparaffin 2 (19) Hydrogenated castor oil stearate 3 (20) Macadamia nut oil fatty acid phytosteryl 1.5 (21) 2-Octyldodecanol 0.2 (22) Isostearic acid 0.8 (23) Glyceryl tri-2-ethylhexanoate 2 (24) Diisostearyl malate 1.5 (25) Di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate 1 (26) Methylphenylpolysiloxane 4 (27) Isotridecyl isononanoate 0.5 (28) Sodium hydroxide 0.024 (29) Carboxyvinyl polymer 0.06 (30) (Acrylates / C10-30 alkyl acrylate crosspolymer) (*14) 0.02 (31) Polyethylene glycol decyltetradeceth-20 hexamethylene diisocyanate copolymer (*1) (component (B)) 0.2 (32) Tranexamic acid (ingredient (A)) 3 (33) Remaining purified water (34)Fragrance 0.18 (35) Ethanol 2 (36) Phenoxyethanol 0.3 (37) Tocopheryl acetate, water-soluble collagen, royal jelly extract, Angelica acutiloba root extract, Rosa centifolia flower extract, Rosa damascena flower water, Rosemary leaf extract, Acerola fruit extract, acetyl glutamic acid, theanine, glycine, Citric acid extract, Guava extract, hydrolyzed hyaluronic acid, and sodium hyaluronate mixture (a mixture of cosmetic ingredients) 1 (Manufacturing method) A: Components (1) to (13) were uniformly dissolved and mixed at 70°C. B: Components (14) to (27) were uniformly dissolved and mixed at 80°C. C: B was added to A and emulsified at 70°C. D: Components (28) to (37) were added to C and mixed, then cooled to 40°C to obtain an oil-in-water cream.

[0065] In the above examples, (A) / (B) = 35 and (A) / (C) = 3.5. The cream of Example 19 reduced stickiness on the skin after application, felt thick on application, and adhered closely to the skin.

[0066] Example 20: Emulsion (oil-in-water type) (mass%) (1) 1,3-butylene glycol 6 (2) Dipropylene glycol 3 (3) Hydrogenated soybean phospholipid (ingredient (D)) 0.2 (4) Cholesterol 0.2 (5) Polyoxyethylene (20) Hydrogenated Castor Oil 0.2 (6) Purified water 15 (7) Niacinamide (ingredient (A)) 3 (8) Macadamia nut oil fatty acid phytosteryl 1 (9) Caprylic / Capric Triglyceride 0.2 (10) Natural Vitamin E 0.1 (11) Tocopheryl acetate 0.01 (12) Polyoxyethylene sorbitan monooleate (20E.O.) 1.5 (13) Stearyl alcohol 1 (14) Behenyl alcohol 1 (15) Cetostearyl alcohol 0.5 (16) Cetyl palmitate 0.1 (17) Sodium hydroxide 0.005 (18) Carboxyvinyl polymer 0.2 (19) (Sodium acrylate / sodium acryloyldimethyltaurate) copolymer mixture (Note 15) 0.1 (20) Polyethylene glycol decyltetradeceth-20 hexamethylene diisocyanate copolymer (*1) (component (B)) 0.2 (21) Tranexamic acid (ingredient (A)) 1 (22) Remaining purified water (23) Diglycerin 0.5 (24) Boron nitride (*2) (component (C)) 1 (25) Talc (*6) (ingredient (C)) 0.1 (26) Barium sulfate (*7) (component (C)) 0.1 (27) Concentrated glycerin 1 (28) Ethanol 5 (29)Fragrance 0.1 (30) Gentian extract, hydrolyzed silk liquid, hydrolyzed rice extract, seaweed extract, Saccharomyces cerevisiae extract, pomegranate fruit extract, pomegranate peel extract, tallow fruit extract, parsley extract, royal jelly extract, avocado extract, gynostemma pentaphyllum extract, barberry fruit extract, apple extract, lemongrass extract, citric acid extract, asparagus extract, guava extract, coffee extract, ginseng extract, grape leaf extract, and burnet extract mixture, L-serine, Iwashobu leaf extract, artemisia capillaris flower extract, Alpinia speciosa leaf extract, eggplant fruit extract, guava extract, cornflower flower water, tallow tea extract, Centella asiatica leaf extract, grape leaf extract (mixture of beauty ingredients) 1 (Note 15) SIMULGEL EG QD (SEPPIC) (Manufacturing method) A: Components (1) to (5) were uniformly dissolved and mixed at 75°C. B: Components (6) and (7) were uniformly dissolved and mixed at room temperature. C: Components (8) to (16) were uniformly dissolved and mixed at 80°C. D: While A was maintained at 75°C, B was added and dissolved and mixed. E: While D was maintained at 75°C, heated C was added and emulsified. F: Components (17) to (30) were added to E and mixed, then cooled to 40°C to obtain an oil-in-water emulsion.

[0067] In the above example, (A) / (B) = 20 and (A) / (C) = 3.3. The lotion of Example 20 reduced stickiness on the skin after application, felt thick on application, and adhered closely to the skin.

[0068] Example 21: Sunscreen cream (oil-in-water type) (mass%) (1) Sodium stearoyl glutamate (ingredient (D)) 0.4 (2) Glyceryl stearate 0.3 (3) Phytosteryl Oleate 0.5 (4) Di(isostearyl / phytosteryl) dimer dilinoleate 1.5 (5) Hydrogenated soybean phospholipid (ingredient (D)) 1 (6) Concentrated glycerin 12 (7) Niacinamide (ingredient (A)) 4 (8) 1,3-butylene glycol 3 (9) Propylene glycol dicaprate 1 (10) Ethylhexyl methoxycinnamate 5 (11) Diglyceryl tetraisostearate 5 (12) Dimethylpolysiloxane (Note 16) 2 (13) Hydrogenated castor oil stearate 1 (14) Diisostearyl malate 1 (15) Squalane 8 (16) Heavy Liquid Isoparaffin 2 (17) 2,4-[4-(diethylamino)-2-hydroxybenzoyl]benzoic acid hexyl ester 0.5 (18) 2,4,6-Trianilino-p-(carbo-2'-ethyl-hexyl-1'-oxy)-1,3,5-triazine 1.5 (19) Polysilicone 15 0.5 (20) Polysilicone 10 0.5 (21) Diethylaminohydroxybenzoylbenzoic acid hexyl ester 1 (22) 2,4-bis{[4-(2-ethylhexyloxy)-2-hydroxy]-phenyl}-6-(4-methoxyphenyl)-1,3,5-triazine 1.5 (23) Remaining purified water (24) Acrylic acid / alkyl methacrylate copolymer 1 (25) Polyethylene glycol decyltetradeceth-20 hexamethylene diisocyanate copolymer (*1) (component (B)) 0.4 (26) Carrageenan 1 (27) Tranexamic acid (ingredient (A)) 3 (28) Purified water 5 (29) Diglycerin 0.5 (30) Boron nitride (*2) (component (C)) 1 (31) Talc (*6) (ingredient (C)) 0.1 (31) Mica (*3) (Component (C)) 0.1 (32) Mixture of beauty ingredients: celery fruit extract, cornflower flower water, artemisia capillaris flower water, harpagophytum root extract, parsley extract, royal jelly extract, rosa alba, asparagus extract, guava extract, coffee extract, taiso flower extract, avocado extract, gynostemma pentaphyllum extract, chamomilla recutita (matricaria) flower extract, apple extract, kiss berry, purple jasmine root extract, grape leaf extract, and burnet extract (mixture of beauty ingredients), lemongrass extract, and 1 person-shizuoka extract. (Note 16) SH200C FLUID 6CS (manufactured by Toray Dow Corning) (Manufacturing method) A: Components (1) to (22) were mixed uniformly at room temperature and heated to 70°C. B: Component (23) was heated to 70°C, added to A and emulsified. C: After C was cooled to 40°C, components (24) to (32) were added to obtain a sunscreen cream.

[0069] In the above example, (A) / (B)=17.5, and (A) / (C)=5.8. The cream of Example 21 reduced stickiness on the skin after application, felt thick on application, and adhered closely to the skin.

Claims

1. The following components (A) to (C): (A) Tranexamic acids and / or niacinamide (B) Hydrophobically modified polyether urethane (C) Plate-like powder wherein the mass ratio (A) / (B) of the content of the component (A) to the content of the component (B) is 12 or more, and when the plate-like powder of the component (C) is mica, the aqueous cosmetic is untreated.

2. The aqueous cosmetic preparation according to claim 1 , wherein the mass ratio (A) / (C) of the content of said component (A) to the content of said component (C) is 1 or more.

3. 3. The aqueous cosmetic preparation according to claim 1, further comprising component (D) an anionic surfactant and / or an amphoteric surfactant.

4. 3. The aqueous cosmetic preparation according to claim 1, wherein the component (D) is at least one selected from the group consisting of N-alkyl-N-acyltaurine salts, N-acylamino acid salts, and phospholipids.

5. 3. The aqueous cosmetic preparation according to claim 1, wherein the component (C) is at least one selected from the group consisting of boron nitride, synthetic phlogopite, lauroyl lysine, and untreated mica.

6. 3. The aqueous cosmetic preparation according to claim 1, wherein the component (B) is a (PEG-240 / decyltetradeceth-20 / HDI) copolymer.

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