Applicator

Abstract

The present invention provides a liquid cosmetic and an applicator that can suppress both skin damage and applicator damage during application. [Solution] The liquid cosmetic contains water, a pigment, a solvent, emulsion particles of a first copolymer synthesized from one or more selected from alkyl acrylates, alkyl methacrylates, acrylic acid and methacrylic acid, and styrene, emulsion particles of a second copolymer synthesized from two or more selected from alkyl acrylates, alkyl methacrylates, acrylic acid and methacrylic acid, and a polyoxyethylene alkyl ether with an alkyl chain having 22 to 24 carbon atoms.

Description

【Technical Field】 【0001】 The present disclosure relates to liquid cosmetics and applicators. 【Background Art】 【0002】 Liquid cosmetics are used as cosmetics such as eyeliners. 【0003】 Patent Document 1 describes an aqueous eyeliner cosmetic containing carbon black and an emulsion polymer containing vinyl acetate. In this aqueous eyeliner cosmetic, the blending amounts of each component are defined in order to achieve smooth usability, excellent makeup persistence, ease of peeling during removal, etc. 【0004】 Patent Document 2 discloses a brush hair material for a writing instrument (applicator) for applying liquid cosmetics or the like to the skin. This brush hair material is formed from a resin composition containing polypropylene terephthalate and polybutylene terephthalate in order to reduce hair opening and wear after long-term use. 【Prior Art Documents】 【Patent Documents】 【0005】 【Patent Document 1】 Japanese Patent Application Laid-Open No. 2013-121949 【Patent Document 2】 Japanese Patent Application Laid-Open No. 2006-254953 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0006】 Incidentally, when applying liquid cosmetics to the skin using an applicator, friction occurs between the skin, the liquid cosmetic, and the applicator, which can damage the skin and the applicator. In this regard, the liquid cosmetic described in Patent Document 1 does not take into account the damage to the applicator caused by friction. Furthermore, in the case of an applicator with good abrasion resistance, such as the one described in Patent Document 2, it is generally thought that the frictional energy generated during application is concentrated on the skin, resulting in greater skin damage. 【0007】 In view of the above circumstances, at least one embodiment of the present invention aims to provide a liquid cosmetic and an applicator that can suppress both damage to the skin and damage to the applicator during application. [Means for solving the problem] 【0008】 A liquid cosmetic composition according to at least one embodiment of the present invention is Water and, Pigments and Solvents and, Emulsion particles of a first copolymer synthesized from alkyl acrylate, alkyl methacrylate, and one or more selected from acrylic acid and methacrylic acid, and styrene, Emulsion particles of a second copolymer synthesized from alkyl acrylate, alkyl methacrylate, and two or more selected from acrylic acid and methacrylic acid, Polyoxyethylene alkyl ethers with an alkyl chain having 22 to 24 carbon atoms, It contains. 【0009】 Furthermore, the applicator according to at least one embodiment of the present invention is A brush part formed from a brush material containing synthetic resin, It comprises a liquid storage section for storing the above-mentioned liquid cosmetic, The liquid cosmetic is supplied from the liquid container to the brush. [Effects of the Invention] 【0010】 According to at least one embodiment of the present invention, a liquid cosmetic and an applicator are provided that can suppress both damage to the skin and damage to the applicator during application. [Brief explanation of the drawing] 【0011】 [Figure 1] This is a longitudinal cross-sectional view of a coating device according to one embodiment. [Modes for carrying out the invention] 【0012】 Hereinafter, several embodiments of the present invention will be described with reference to the attached drawings. However, the dimensions, materials, shapes, relative arrangements, etc., of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples. 【0013】 (Composition of liquid cosmetics) Some embodiments of the liquid cosmetic are liquid cosmetics that can be used as, for example, eyeliner, eyebrow pencil, concealer, foundation, nail polish, lip color, etc., and can be applied to human skin, etc., using, for example, an applicator as described later. 【0014】 Some embodiments of the liquid cosmetic composition contain water, a pigment, a solvent, emulsion particles of a first copolymer, emulsion particles of a second copolymer, and a polyoxyethylene alkyl ether having 22 to 24 carbon atoms in its alkyl chain. The aforementioned first copolymer is a copolymer (i.e., styrene / acrylates copolymer) synthesized from one or more selected from alkyl acrylates, alkyl methacrylates, acrylic acid, and methacrylic acid, and styrene. The aforementioned second copolymer is a second copolymer (i.e., alkyl acrylate copolymer) synthesized from two or more selected from alkyl acrylates, alkyl methacrylates, acrylic acid, and methacrylic acid. 【0015】 The liquid cosmetic according to the above-described embodiment contains emulsion particles of the above-described first copolymer (styrene / acrylates copolymer) and emulsion particles of the above-described second copolymer (alkyl acrylate copolymer). Therefore, when the liquid cosmetic is applied, a film with appropriate hardness can be formed on the skin. 【0016】 Further, the liquid cosmetic according to the above-described embodiment contains a polyoxyethylene alkyl ether having 22 to 24 carbon atoms in the alkyl chain in addition to the above-described first copolymer and the above-described second copolymer. Therefore, in the liquid cosmetic, the first copolymer and the second copolymer exist as emulsion particles adsorbed with the lipophilic portion of the polyoxyethylene alkyl ether (surfactant), respectively. 【0017】 Since the above-described polyoxyethylene alkyl ether has 24 or less carbon atoms in the alkyl chain, it is relatively soluble in the aqueous medium. Therefore, an appropriate surfactant action is easily obtained. 【0018】 Further, since the above-described polyoxyethylene alkyl ether has 22 or more carbon atoms in the alkyl chain, the adsorption force of the lipophilic portion (alkyl chain portion) to the resin (first copolymer and second copolymer) is excellent. Therefore, the above-described emulsion particles (emulsion particles of the first copolymer and emulsion particles of the second copolymer) can stably exist in the liquid cosmetic. Therefore, the liquid cosmetic present between the applicator and the skin during application is likely to have a sparse structure in which gaps are formed between the emulsion particles. 【0019】 In addition, the polyoxyethylene alkyl ether has a hydrophilic portion (polyoxyethylene chain portion). Therefore, the above-described emulsion particles have high affinity with the skin and the brush portion of the applicator. Therefore, when the liquid cosmetic is applied to the skin using the applicator, the above-described emulsion particles are likely to adhere to the surface of the applicator and the surface of the skin. 【0020】 Here, when applying the liquid cosmetic, if the applicator is moved against the skin, friction occurs between the skin, the liquid cosmetic, and the applicator. At this time, since the liquid cosmetic between the applicator and the skin has a sparse structure as described above, due to the friction, cracks occur along the moving direction of the applicator against the skin (i.e., the direction along the surface of the skin) between the emulsion particles adhering to the skin and the emulsion particles adhering to the surface of the applicator, and the liquid cosmetic containing the emulsion particles is separated into a film on the skin surface and a film on the applicator surface. 【0021】 Also, in each film of the liquid cosmetic, the above-mentioned polyoxyethylene alkyl ether acts like a lubricant. Therefore, when the above-mentioned friction occurs, the emulsion particles constituting each of the film on the skin surface and the film on the applicator surface roll. For this reason, each film is likely to be maintained on the skin surface and the applicator surface without being broken. 【0022】 In this way, since the frictional energy generated during the application of the liquid cosmetic to the skin is consumed by the generation of cracks between the emulsion particles and the rolling of the emulsion particles, damage (such as abrasion) to the skin and the applicator due to friction during application can be effectively suppressed. 【0023】 The emulsion particles of the first copolymer contained in the above-mentioned liquid cosmetic are emulsion particles of a copolymer synthesized from one or more selected from alkyl acrylates, alkyl methacrylates, acrylic acid, and methacrylic acid and styrene (i.e., styrene / acrylates copolymer). 【0024】 The emulsion particles of the first copolymer are available in the form of an emulsion containing the emulsion particles (hereinafter referred to as the first copolymer emulsion), and this first copolymer emulsion can be used as a material for the liquid cosmetic. 【0025】 As the above-mentioned first copolymer emulsion, for example, an emulsion having a solid content concentration of 30 to 60% by weight with water as a medium may be blended into the liquid cosmetic. 【0026】 The emulsion particles of the first copolymer may have spherical, plate-like, needle-like, hollow, solid, or porous shapes. 【0027】 The emulsion particles of the first copolymer may be spherical solid particles. In this case, the surface area of ​​the outermost shell of the particle can be increased, allowing for efficient adhesion with polyoxyethylene alkyl ethers with an alkyl chain having 22 to 24 carbon atoms. Therefore, it becomes easier to effectively form a film on both the skin and the applicator. 【0028】 A commercially available product can be used as the first copolymer emulsion described above. Examples of commercially available products that can be used as the first copolymer emulsion include Yodozol GH41F (Nurion Japan Co., Ltd., product name, solid content concentration: 45% by weight) and Daitozol 5000STY (Daito Chemical Industries Co., Ltd., product name, solid content concentration: 50% by weight). 【0029】 The first copolymer emulsion described above can be used individually or in combination of two or more types. 【0030】 The content of the first copolymer (emulsion particles) in the liquid cosmetic (content as solids) may be 2% by weight or more and 30% by weight or less, 4% by weight or more and 24% by weight or less, or 6% by weight or more and 18% by weight or less. 【0031】 If the content of the first copolymer is 2% by weight or more, 4% by weight or more, or 6% by weight or more, the viscosity of the liquid cosmetic will not become too low, and excessive dispensing of the liquid cosmetic will be suppressed, for example, when using the applicator described later. If the content of the first copolymer is 30% by weight or less, 24% by weight or less, or 18% by weight or less, the viscosity of the liquid cosmetic will not become too high, and the liquid cosmetic will be dispensed appropriately, for example, when using the applicator described later. 【0032】 Furthermore, if the content of the first copolymer is within the above-mentioned range, the hardness of the film formed on the surface of the skin and applicator when the liquid cosmetic is applied is moderately hard. As a result, crack formation between the films and rolling of emulsion particles due to friction during the application of the liquid cosmetic are more likely to occur. Therefore, damage (abrasion, etc.) to the skin and applicator due to friction during the application of the liquid cosmetic can be effectively suppressed. 【0033】 The emulsion particles of the second copolymer contained in the above-mentioned liquid cosmetic are emulsion particles of a second copolymer (i.e., alkyl acrylate copolymer) synthesized from two or more selected from alkyl acrylates, alkyl methacrylates, acrylic acid, and methacrylic acid. 【0034】 The emulsion particles of the second copolymer are available in the form of an emulsion containing these emulsion particles (hereinafter referred to as the second copolymer emulsion), and this second copolymer emulsion can be used as a material for liquid cosmetics. 【0035】 Commercially available products can be used as the second copolymer emulsion described above. Examples of commercially available products that can be used as the second copolymer emulsion include: Dermacryl AQF (manufactured by Nurion Japan, product name, solid content concentration: 45% by weight), Dermacryl X (manufactured by Nurion Japan, product name, solid content concentration: 45% by weight), Yodozol GH800F (manufactured by Nurion Japan, product name, solid content concentration: 45% by weight), Yodozol GH810F (manufactured by Nurion Japan, product name, solid content concentration: 46% by weight), Yodozol GH34F (manufactured by Nurion Japan, product name, solid content concentration Examples include: 42% by weight, Yodozol GH256F (manufactured by Nurion Japan, product name, solid content concentration: 29% by weight), Daitozol 5000SJ (manufactured by Daito Chemical Industries, product name, solid content concentration: 50% by weight), Daitozol 4000SJT (manufactured by Daito Chemical Industries, product name, solid content concentration: 40% by weight), Daitozol 5000PO (manufactured by Daito Chemical Industries, product name, solid content concentration: 50% by weight), Daitozol 3000SLPN-PE1 (manufactured by Daito Chemical Industries, product name, solid content concentration: 30% by weight), etc. 【0036】 The above-mentioned second copolymer emulsion can be used individually or in combination of two or more types. 【0037】 The content of the second copolymer (emulsion particles) in the liquid cosmetic (content as solids) may be 0.01% by weight or more and 10% by weight or less, 0.05% by weight or more and 7.5% by weight or less, or 0.1% by weight or more and 5% by weight or less. 【0038】 If the content of the second copolymer is 0.01% by weight or more, 0.05% by weight or more, or 0.1% by weight or more, the viscosity of the liquid cosmetic will not become too low, and excessive dispensing of the liquid cosmetic will be suppressed, for example, when using the applicator described later. If the content of the second copolymer is 10% by weight or less, 7.5% by weight or less, or 5% by weight or less, the viscosity of the liquid cosmetic will not become too high, and the liquid cosmetic will be dispensed appropriately, for example, when using the applicator described later. 【0039】 Furthermore, if the content of the second copolymer is within the above-mentioned range, the hardness of the film formed on the surface of the skin and applicator when the liquid cosmetic is applied is moderately soft. This makes it easier for cracks to form between the films and for emulsion particles to roll due to friction during the application of the liquid cosmetic. Therefore, damage (abrasion, etc.) to the skin and applicator due to friction during the application of the liquid cosmetic can be effectively suppressed. 【0040】 The polyoxyethylene alkyl ethers containing 22 to 24 carbon atoms in the alkyl chain of the liquid cosmetic described above function as surfactants having a lipophilic portion (alkyl chain portion) and a hydrophilic portion (polyoxyethylene chain portion). 【0041】 The aforementioned polyoxyethylene alkyl ethers have 22 or more carbon atoms in their alkyl chains, resulting in excellent adsorption of the lipophilic portion (alkyl chain portion) to the resins (first copolymer and second copolymer). Therefore, emulsion particles (emulsion particles of the first copolymer and emulsion particles of the second copolymer) can exist stably in liquid cosmetics. Furthermore, the aforementioned polyoxyethylene alkyl ethers have 24 or fewer carbon atoms in their alkyl chains, making them relatively soluble in aqueous media. This allows for the easy acquisition of appropriate surfactant activity. 【0042】 The average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether described above may be 5 to 50, 20 to 35, or 30. 【0043】 If the average number of moles of ethylene oxide added is 5 or more, 20 or more, or 30, the hydrophilicity of the hydrophilic portion of the polyoxyethylene alkyl ether is relatively high. Therefore, the emulsion particles to which polyoxyethylene alkyl ether is adsorbed in the liquid cosmetic have good affinity with the skin and applicators, making it easy to form a film of the liquid cosmetic on the surface of the skin and applicators. Furthermore, if the average number of moles of ethylene oxide added is 50 or less, 35 or less, or 30, a moderate surfactant effect can be obtained, or it can be obtained relatively easily. 【0044】 Furthermore, by having 22 to 24 carbon atoms in the alkyl chain of the polyoxyethylene alkyl ether, and having 5 to 50 moles of ethylene oxide added, or 20 to 35, or 30 moles, it becomes easier to achieve both good solubility in water and high hydrophilicity (i.e., good affinity with skin and application tools). 【0045】 As a polyoxyethylene alkyl ether with an alkyl chain having 22 or more carbon atoms and 24 or less carbon atoms, polyoxyethylene behenyl ether (alkyl chain carbon number: 22), which is relatively easy to obtain, can be suitably used. 【0046】 Examples of commercially available polyoxyethylene alkyl ethers with an alkyl chain having 22 to 24 carbon atoms include NIKKOL BB-5 (manufactured by Nikko Chemicals Co., Ltd., polyoxyethylene behenyl ether, average number of moles of ethylene oxide added: 5), NIKKOL BB-20 (manufactured by Nikko Chemicals Co., Ltd., polyoxyethylene behenyl ether, average number of moles of ethylene oxide added: 20), or NIKKOL BB-30 (manufactured by Nikko Chemicals Co., Ltd., polyoxyethylene behenyl ether, average number of moles of ethylene oxide added: 30). 【0047】 Polyoxyethylene alkyl ethers with an alkyl chain having 22 to 24 carbon atoms can be used individually or in combination of two or more types. 【0048】 The content of the polyoxyethylene alkyl ether in the liquid cosmetic may be 0.01% by weight or more and 20% by weight or less, 0.02% by weight or more and 5% by weight or less, or 0.07% by weight or more and 1.5% by weight or less. If the content of the polyoxyethylene alkyl ether is within the above range, a moderate surfactant effect can be obtained, and emulsion particles in which the lipophilic portion is adsorbed onto the first copolymer and the second copolymer can be effectively formed in the liquid cosmetic. 【0049】 The pigments contained in the aforementioned liquid cosmetics are used to color the liquid cosmetics. 【0050】 As the pigments mentioned above, known pigments commonly used in cosmetics can be used without particular limitation. Examples of pigments include inorganic powders such as aluminum oxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, talc, kaolin, silica, and silicon carbide; organic powders such as magnesium stearate, zinc stearate, N-acyllysine, and nylon; white inorganic pigments such as titanium dioxide, zinc oxide, cerium oxide, and barium sulfate; colored inorganic pigments such as black iron oxide, red iron oxide, red iron oxide (a mixture of black iron oxide and red iron oxide), yellow iron oxide, carbon black, chromium oxide, chromium hydroxide, Prussian blue, ultramarine, and red iron oxide; organic pigments such as Red 201, Red 202, Red 205, Red 226, Red 228, Orange 203, Orange 204, Blue 404, and Yellow 401; and Red 3, Red 104, Red 106, Orange 205, and Yellow 4 Examples include organic pigments such as zirconium, barium, or aluminum lake pigments like Yellow No. 5, Green No. 3, and Blue No. 1; mica pigments such as titanium mica, carmine-coated titanium mica, chromium oxide-coated titanium mica, iron oxide-coated titanium mica, iron oxide / carmine-coated titanium mica, iron oxide / Prussian blue-coated titanium mica, blue-coated titanium mica, Prussian blue-coated titanium mica, red iron oxide-coated mica, red iron oxide-coated titanium mica, red iron oxide-carmine-coated titanium mica, red iron oxide-iron oxide-coated titanium mica, red iron oxide-Prussian blue-coated titanium mica, and red iron oxide-iron oxide-Prussian blue-coated titanium mica; flake pigments with a metal or metal oxide coating on a base material of glass flakes or chunky flakes; and metal powder pigments such as aluminum, gold, silver, copper, platinum, and stainless steel. Pigments can be used individually or in combination of two or more types. 【0051】 The pigment content in the liquid cosmetic may be 3% by weight or more and 30% by weight or 5% by weight or more and 20% by weight or less. If the pigment content is 3% by weight or more or 5% by weight or more, the color of the liquid cosmetic is sufficiently dark, resulting in good cosmetic function. Furthermore, if the pigment content is 30% by weight or less or 20% by weight or less, the dispersibility of the pigment in the liquid cosmetic is good, making it easier to suppress color unevenness in the liquid cosmetic. 【0052】 The solvents contained in the aforementioned liquid cosmetics are used to impart various functions to the liquid cosmetics (for example, corrosion prevention, freeze prevention, drying prevention, etc.). 【0053】 As the solvent mentioned above, any known solvent commonly used in cosmetics can be used without particular limitation. Examples of the solvent mentioned above include alcohols containing monohydric or polyhydric alcohols. The solvent can be used alone or in combination of two or more. 【0054】 The solvent content in the liquid cosmetic may be 1% by weight or more and 40% by weight or 3% by weight or more and 30% by weight or less. If the solvent content is 1% by weight or more or 3% by weight or more, the above-mentioned functions (corrosion prevention, etc.) are easily imparted to the liquid cosmetic. If the solvent content is 40% by weight or less or 30% by weight or less, the irritation to the skin when the liquid cosmetic is applied to the skin will not be too great. 【0055】 The water contained in the above-mentioned liquid cosmetic is the main component and main solvent of the liquid cosmetic. Ion-exchanged water, purified water, pure water, or ultrapure water may be used as the water. 【0056】 The water content in the liquid cosmetic may be 40% by weight or more and 90% by weight or less, or 50% by weight or more and 80% by weight or less. If the water content is 40% by weight or more or 50% by weight or more, other components (solvents, surfactants, etc.) are sufficiently soluble in water. If the water content is 90% by weight or less or 80% by weight or less, the content of other components (first copolymer, second copolymer, solvent, or pigment, etc.) can be increased, making it easier to form a film of the liquid cosmetic on the surface of the skin or applicator, or making it easier to make the color of the liquid cosmetic sufficiently dark. 【0057】 Some embodiments of the liquid cosmetic composition may contain other components in addition to the above-mentioned components (water, pigment, solvent, emulsion particles of the first copolymer, emulsion particles of the second copolymer, and polyoxyethylene alkyl ether with an alkyl chain having 22 to 24 carbon atoms). Some embodiments of the liquid cosmetic composition may contain, for example, a preservative or a pH adjuster. 【0058】 In this specification, preservatives refer to substances having the functions of preservation, preservation enhancement, storage, antibacterial, antifungal, and antioxidant. Examples of preservatives include phenoxyethanol, pentylene glycol, ethanol, parahydroxybenzoic acid esters, 1,2-pentadiol, prilcyl glycol, hexylene glycol, dehydroacetic acid, sodium dehydroacetate, ethylhexylglycerin, ethylene glycol, propylene glycol, 1,3-butylene glycol, dipropylene glycol, 2-methyl-1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,2-pentanediol, and 1,2-hexane. Diols and 1,2-heptanediol, methylparaben and its salts, ethylparaben and its salts, butylparaben and its salts, propylparaben and its salts, isobutylparaben and its salts, isopropylparaben, benzylparaben, isopropylmethylphenol, chlorhexidine gluconate solution, trichlorocarbanilide, carbolic acid, hexachlorophene, benzoic acid and its salts, undecylenic acid, salicylic acid, sorbic acid and its salts, photosensitizer 101, photosensitizer 201, photosensitizer 401, hinokitiol, Benzyl alcohol, piroctone olamine, iodopropynyl butylcarbamate, methyldibromoglutaronitrile, DMDM ​​hydantoin, cetyltrimethylammonium chloride, cetylpyridinium chloride, benzethonium chloride, diisobutylethoxyethyldimethylbenzylammonium chloride, sodium N-lauryl sarcosinate, sodium N-methylsarcosinate, lauroyl sarcosine, N-myristoylglycine, potassium-N-lauryl sarcosine, trimethylammonium chloride, aluminum chlorohydr Sodium roxylactate, triethyl citrate, tricetylmethylammonium chloride, 2,4,4'-trichloro-2'-hydroxydiphenyl ether (triclosan), 1,5-pentanediol, 1,6-hexanediol, 3,4,4'-trichlorocarbanilide (triclocarban), diaminoalkylamide, L-lysine hexadecylamide, heavy metal citrate salts, salicylates, piroctose, zinc salts, pyrithione and its heavy metal salts, zinc pyrithione, zinc phenol sulfate, farnesol,Ketoconazole, oxyconazole, bifonazole, butoconazole, croconazole, clotrimazole, econazole, enilconazole, fenticonazole, isoconazole, miconazole, sulconazole, thioconazole, fluconazole, itraconazole, terconazole, naphthifine, terbinafine, selenidesulfide, methylchloroisothiazolinone, methylisothiazolinone, silver chloride, diazolidinylurea, imidazolidinylurea, undecylenic acid, chlorphenesin, propionic acid and its salts, salicylic acid, salicylic acid Magnesium, sodium salicylate, titanium salicylate, chlorooxylenol, sodium salt of diethylhexyl sulfosuccinate, sodium benzoate, (RS)-1-(4-chlorophenoxy)-1-imidazole-1-yl-3,3-dimethylbutan-2-one (Crinbazole), benzyl alcohol, phenoxyisopropanol, 2-bromo-2-nitropropane-1,3-diol, polyaminopropyl biguanide, iodopropynyl butylcarbamate, benzalkonium chloride, benzethonium chloride , pentanediol, 1,2-octanediol, sorbic acid, benzoic acid, lactic acid, imidazolidinyl urea, diazolidinyl urea, dimethylol dimethyl hydantoin (DMDMH), chlorhexidine, sodium salt of hydroxymethylglycinate, hydroxyethylglycine of sorbic acid, N-oleyl hydroxyhexanamide, phenylphenol and its salts, o-phenylphenol and its salts, p-chloro-m-cresol, p-chlorophenol, imidazolidinyl urea, copper usnate, oligopeptide-10, oligopeptide-76 Formic acid, sodium formate, silver citrate, quaternium-14, quaternium-15, glyoxal, grapefruit extract, grapefruit fruit extract, grapefruit seed extract, cresol, chloramine T, chloroxylenol, chlorcresol, chlorobutanol, ammonium / silver / zinc / aluminum silicate, glycerin, Alpinia speciosa flower / leaf / seed / stem extract, Alpinia speciosa leaf / stem ferment, Alpinia zerumbet extract, coriander leaf extract, pomegranate peel extract, Santalum paniculatum wood water, hexamidine dicethionate, 1,2-ethanediol,Sodium citronellate, Siberian larch wood extract, tocopherol, trimonium bromide, thyme leaf oil, thianthol, tea tree oil, baconite, thiamine bislauryl sulfate, sodium hydroxymethylglycinate, phenethyl alcohol, phenol, sodium phenolsulfonate, ferulic acid, ethyl ferulate, benzethonium chloride, silver borosilicate, Boesenbergia panzurata rhizome extract, macelignan, soapberry extract, meth Lupropanediol, Mulaya coenzyme leaf oil, rosemary extract, spirea leaf extract, dimethylaminostyrylheptylmethylthiazolium iodide, bisethylquinolinium ethylquinolinidene pentadiene iodide, sodium lauryl diaminoethylglycinate, lauroyl arginine ethyl HCl, ammonium benzoate, isobutyl benzoate, ethyl benzoate, pantothenyl ethyl benzoate, phenyl benzoate, methyl benzoate, domiphene bromide, capryl Glyceryl acid (glycerin fatty acid ester), bisabolol, anisic acid, sorbitan caprylate, caprylyl glycol, glyceryl caprate, octanediol, aridimorph, tridemorph, dodemorph, dimethomorph; flusilazole, azaconazole, cyproconazole, epoxyconazole, fluconazole, propiconazole, tebuconazole, etc.; imazalil, thiophanate, benomyl, carbendazim, chlorothiaronyl, dichlorane, Trifloxystrobin, phloxstrobin, dimoxystrobin, azoxystrobin, flucaranil, prochloraz, fursulfamide, famoxadone, captan, maneb, mancozeb, dodicine, dozine and metalaxyl, butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), propyl gallate, octyl gallate, carotenoids, β-carotene, lycopene, canthaxanthin, ubiquinone, pentaerythrityl tetra(dibutyl-hydroxy-cinnamic acid), vitamin E, torox, vitamin C and its derivatives, α-tocopherol, δ-tocopherol, ascorbin, ginkgo biloba extract, aspalathus linearis extract, disodium isostearyl ascorbyl phosphate, oolong tea extract, St. John's wort extract, coffee extract, coffee seed extract, St. John's wort flower / leaf / stem extract,Examples of ingredients include yarrow extract, sericin, thyme flower / leaf / stem extract, thyme extract, tea extract, tea leaf extract, clove extract, tetra-2-hexyldecyl ascorbate, tetrahexyldecyl ascorbate, calendula extract, trisodium ascorbyl palmitate phosphate, Haematococcus pluvialis extract, Haematococcus pluvialis oil, evening primrose seed extract, evening primrose extract, lemon balm extract, lemon balm leaf extract, magnesium L-ascorbyl phosphate, magnesium ascorbyl phosphate, etc., among which 1,2- Hexanediol, caprylyl glycol, pentylene glycol, 1,3-butylene glycol, dipropylene glycol, hexylene glycol, phenoxyethanol, ethanol, glyceryl caprate, ethylhexylglycerin, sodium dehydroacetate, sodium benzoate, methylparaben and its salts, ethylparaben and its salts, butylparaben and its salts, propylparaben and its salts, isobutylparaben and its salts, isopropylparaben, and benzylparaben are known to have excellent long-term storage properties and are therefore preferred. These preservatives may be used individually or in combination of two or more. 【0059】 The content of these preservatives in the liquid cosmetic may be 1.0% to 27.0% by weight, 3.0% to 22.0% by weight, or 6.0% to 17.0% by weight, based on the total amount of the cosmetic. The preservative performance is sufficiently achieved when the content of these preservatives is 0.1% or more, 3.0% or more, or 6.0% or more. Skin irritation is acceptable if the content is 27.0% or less, 22.0% or less, or 17.0% or less. 【0060】 pH adjusters include triethanolamine, ethanolamine, sodium hydroxide, calcium hydroxide, potassium hydroxide, magnesium hydroxide, ascorbic acid, glycolic acid, citric acid and its salts, 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, diethanolamine, diisopropanolamine, hydrochloric acid, p-anisic acid, anisic acid, aspartic acid and its salts, triisopropanolamine, adipic acid, azelaic acid, anisic acid and its salts, aminoethylpropanediol, arginine L-arginine, ammonia, isopropanolamine, formic acid, glyoxylic acid, glycolic acid and its salts, glucuronic acid, zinc glycine, glutaric acid, clay minerals, chloroic acid, sodium silicate, ketoglutaric acid, succinic acid and its salts, dioleic acid, cysteine ​​hydrochloride, dimethyl MEA, oxalic acid, trisodium sulfosuccinate, sulfonated (styrene / DVB) crosspolymer, sodium sesquicarbonate, sebaciate, tripeptide-51, tromethamine, baconite, bishydroxyethyltromethamine, 2-sodium pyrophosphate Pyrophosphate, tetrapotassium pyrophosphate, tetrasodium pyrophosphate, fumaric acid, sodium fumarate, propionic acid, benzyl acid, sodium borate, maltobionic acid, maleic acid, malonic acid, methylglucamine, methoxy PEG-114 / poly-ε-caprolactone, morpholine, lactobionic acid, malic acid, phosphoric acid, potassium phosphate, ammonium phosphate, dipotassium phosphate, disodium phosphate, trisodium phosphate, pentasodium triphosphate, lactic acid, synthetic DNA aptamer-1, basic magnesium carbonate, basic zinc carbonate, benzoic acid, potassium carbonate Examples include magnesium carbonate, sodium carbonate, ammonium carbonate, guanidine carbonate, potassium bicarbonate, sodium bicarbonate, ammonium bicarbonate, potassium nitrate, nitric acid, sodium hydrogen nitrate, tartaric acid, disodium tartrate, potassium tartrate, acetic acid, calcium oxide, magnesium oxide, sodium oxide, etc. Among these, citric acid, sodium citrate, arginine, L-arginine, potassium hydroxide, sodium hydroxide, phosphoric acid, calcium phosphate, and triethanolamine are preferred because they are known to maintain a stable pH over the long term.These pH adjusters may be used individually or in combination of two or more. 【0061】 The content of these pH adjusters in the liquid cosmetic may be 0.01% to 3.5% by weight, or 0.015% to 2.5% by weight, or 0.02% to 1.8% by weight, relative to the total amount of the cosmetic. Furthermore, the pH of the liquid cosmetic adjusted by the pH adjuster is preferably 7 to 8. Within the desired range, the pH will be close to that of human skin, so there will be little change in pH after application to the skin, and a good film can be formed. 【0062】 (Method of manufacturing liquid cosmetics) Liquid cosmetic compositions according to several embodiments can be manufactured by various conventionally known methods. 【0063】 Liquid cosmetic compositions according to several embodiments can be manufactured, for example, by the following procedure. First, water, a solvent, a second copolymer, and a polyoxyethylene alkyl ether are mixed with a pigment while stirring, and the mixture is dispersed using a disperser such as a ball mill, bead mill, or roll mill. Next, an emulsion of the first copolymer is added, and the mixture is dispersed using a stirrer and a disperser (ball mill, bead mill, roll mill, etc.). A liquid cosmetic composition is thus obtained. In addition, during these preparation steps, the heat generated by stirring and dispersion, or a heater, can be used to heat the liquid cosmetic composition for stirring and dispersion, or it can be cooled and then stirred and dispersed. Removal of foam using a defoamer or filtration of coarse matter using a filter may be performed as needed. These various mixing steps, stirring and dispersion steps, filtration steps, heating steps, or cooling steps may be performed individually, or two or more steps may be performed in parallel. 【0064】 (Composition of the applicator) Figure 1 is a longitudinal cross-sectional view of an applicator according to one embodiment. This applicator 100 is an applicator for applying the above-mentioned liquid cosmetic to human skin or the like. 【0065】 As shown in Figure 1, an applicator 100 according to one embodiment comprises a shaft 1, a liquid storage section 2 housed inside the shaft 1, a brush section 6 provided on the tip side in the longitudinal direction of the shaft 1, a connecting core 4 provided between the liquid storage section 2 and the brush section 6, and a tail plug 3. 【0066】 The shaft 1 may have a cylindrical or polygonal shape. A reduced-diameter section 1a is provided at the tip end in the longitudinal direction of the shaft 1, where the inner diameter of the shaft 1 is smaller than the outer diameter of the liquid storage section, and this reduced-diameter section 1a restricts the movement of the liquid storage section 2 toward the tip end. In addition, a tail plug 3 is inserted into the shaft 1 from the tail end opening, and this tail plug 3 restricts the movement of the liquid storage section 2 toward the tail end. 【0067】 The liquid storage section 2 is configured to contain liquid cosmetics. It may include an adsorbent capable of adsorbing and containing a liquid. Alternatively, the liquid storage section 2 may be It may include a tank capable of storing liquid cosmetics. 【0068】 The liquid cosmetic contained in the liquid container 2 is supplied to the brush portion 6. In the exemplary embodiment shown in Figure 1, the liquid cosmetic from the liquid container 2 is supplied to the brush portion 6 via the intermediate core 4. The intermediate core 4 shown in Figure 1 is located inside the shaft 1, closer to the tip of the shaft 1 than the liquid container 2. One end of the intermediate core 4 penetrates the liquid container 2, and the brush portion 6 is attached to the other end. The intermediate core 4 and the brush portion 6 are fixed in position relative to the shaft 1 by a fixing tube 5 that is partially inserted into the shaft 1 from the tip side and fitted into the shaft 1. 【0069】 With liquid cosmetic supplied to the brush part 6, the liquid cosmetic can be applied to the skin by moving the brush part 6 relative to the skin while keeping it in contact with the skin. 【0070】 The brush portion 6 is formed from a brush material (brush bristles, fibers) containing synthetic resin. 【0071】 In some embodiments, the water absorption rate of the brush material constituting the brush portion 6 may be 0.5% or more and 10% or less, or 1.0% or more and 4.0% or less. 【0072】 If the water absorption rate of the brush material is 0.5% or higher, or 1.0% or higher, the affinity between the brush material and the hydrophilic portion of the surfactant (polyoxyethylene alkyl ether) is good. Therefore, the affinity between the emulsion particles on which polyoxyethylene alkyl ether is adsorbed in the liquid cosmetic and the brush portion of the applicator is good, making it easier for a film of the liquid cosmetic to form on the surface of the brush portion 6 of the applicator 100. If the water absorption rate of the brush material is 10.0% or lower, or 4.0% or lower, the hardness (firmness) of the brush material is less likely to be lost. Therefore, the feel of using the applicator 100 when applying liquid cosmetic is less likely to deteriorate. 【0073】 The synthetic resin constituting the brush material may include, for example, a polyamide resin such as nylon, polypropylene terephthalate, or polybutylene terephthalate. The nylon may be, for example, nylon 6, nylon 66, nylon 610, nylon 612, nylon 11, or nylon 12. Various types of nylon have relatively high water absorption rates, and for this reason, they can be suitably used as brush materials. 【0074】 The brush portion may include one type of brush material formed from one type of synthetic resin, or it may include a mixture of two or more different brush materials formed from different synthetic resins. 【0075】 The thickness of the brush material constituting the brush portion 6 is not particularly limited, but may be, for example, 2.0 mm to 5.0 mm. If the brush material is made of bundled fibers, the thickness of the brush material can be made by bundling multiple fibers with a thickness of 0.10 mm to 0.20 mm. The length of the bristles of the brush portion 6 is not particularly limited, but may be, for example, 5 mm to 20 mm. 【0076】 The cross-sectional shape of the brush material is not limited to a round cross-section; it can be appropriately selected from, for example, elliptical, polygonal, multi-lobed, and hollow shapes depending on the application. Similarly, the cross-sectional shape of the fibers can be appropriately selected from, for example, round, elliptical, polygonal, multi-lobed, and hollow shapes depending on the application, and it is also possible to mix and bundle fibers with at least two different cross-sectional shapes to create the brush material. 【0077】 The tips of the brush material (brush bristles, fibers) may be tapered. By tapering the brush bristles or bundling tapered fibers together, it becomes possible to obtain the smooth application feel and beautiful brushstrokes characteristic of brushes. [Examples] 【0078】 The present invention will be described in detail below with reference to examples. 【0079】 (Preparation of liquid cosmetics) Liquid cosmetic compositions of Examples 1-7 and Comparative Examples 1-3, having the compositions shown in Tables 1-2 below, were prepared. Specifically, the following materials were used for each liquid cosmetic composition shown in Tables 1-2. 【0080】 <Solvent> 1,3-Butylene glycol (Trade name: High Sugar Cane, manufactured by Higher Alcohol Industry Co., Ltd.) Hexylene glycol (Trade name: Arkema, manufactured by Arkema Corporation) 1,2-Pentanediol (Trade name: Diol PD, manufactured by Higher Alcohol Industry Co., Ltd.) Ethylhexylglycerin (Product name: Saskin 50, manufactured by SACHEM) 2-Phenoxyethanol (Product name: Phenoxyethanol, manufactured by Clariant) 【0081】 <Pigments> Carbon Black (Product Name: UNIPURE BLACK LC-902, manufactured by SENSIENT) A mixture of black iron oxide and red iron oxide (red iron oxide) (product name: UNIPURE RED LC381, manufactured by SENSIENT). 【0082】 <First copolymer (emulsion)> (Styrene / acrylates) copolymer emulsion, solids content: 50% aqueous dispersion (product name: Daitozol 5000STY, manufactured by Daito Chemical Industries, Ltd.) 【0083】 <Second copolymer (emulsion)> Alkyl acrylate copolymer emulsion, aqueous dispersion with a solid content of 45% (product name: Dermacryl AQF, manufactured by Nurion Japan Co., Ltd.) 【0084】 <Comparative resin emulsion> Alkyl acrylate / vinyl acetate copolymer emulsion (Product name: Nissetsu U-4315B, manufactured by Nippon Carbide Industries Co., Ltd.) 【0085】 <Polyoxyethylene alkyl ether (surfactant)> Polyoxyethylene behenyl ether (5E.O.), number of carbon atoms in the alkyl chain: 22, average number of moles of ethylene oxide added: 5 (product name: NIKKOL BB-5) Polyoxyethylene behenyl ether (20 E.O.), number of carbon atoms in the alkyl chain: 22, average number of moles of ethylene oxide added: 20 (Product name: NIKKOL BB-20) Polyoxyethylene behenyl ether (30 E.O.), number of carbon atoms in the alkyl chain: 22, average number of moles of ethylene oxide added: 30 (product name: NIKKOL BB-30) Polyoxyethylene cetyl ether (20 E.O.), number of carbon atoms in the alkyl chain: 16, average number of moles of ethylene oxide added: 20 【0086】 The liquid cosmetic compositions of each example and comparative example were prepared by the following procedure. First, water, solvent, and a second copolymer emulsion (Examples 1-7, Comparative Examples 1 and 3) or a comparative resin emulsion (Comparative Example 2), along with a polyoxyethylene alkyl ether, were mixed with pigment while stirring, and the mixture was dispersed using a disperser. Subsequently, a first copolymer emulsion (Examples 1-7, Comparative Examples 1-2) or a comparative resin emulsion (Comparative Example 3) was added, and the mixture was dispersed using a stirrer and a disperser. In this way, the liquid cosmetic compositions of each example and comparative example were obtained. 【0087】 (Test application tool) To evaluate the liquid cosmetic compositions according to the examples and comparative examples, test applicators A to C were prepared. Applicators A to C have the structure shown in Figure 1. The bristle length L of the brush portion of applicators A to C (see Figure 1; the axial length of the portion of the brush portion 6 closer to the tip than the fixed tube 5) is 8.5 mm ± 1.0 mm, and the outer diameter (maximum) of the brush portion is 3.5 mm, respectively. The characteristics of the brush material constituting the brush portion of applicators A to C are as follows. 【0088】 The water absorption rates of the brush materials described below were measured according to Method A described in ISO 62 (Plastics - Method for determining water absorption rates). 【0089】 <Porting tool A> Brush material (brush bristles): Polybutylene terephthalate Water absorption rate of brush material: 0.5% <Porting tool B> Brush material (brush bristles): Polyamide 66 (Nylon 66) Water absorption rate of brush material: 8.5% <Porting tool C> Brush material (brush bristles): Polyamide 612 (Nylon 612) Water absorption rate of brush material: 3.0% 【0090】 [Table 1] 【0091】 [Table 2] 【0092】 Using the liquid cosmetic compositions of Examples 1-7 and Comparative Examples 1-3 described above, as well as applicators A-C, the abrasion resistance tests and monitoring tests described below were conducted. In each test, the applicators shown in Table 1 were used to apply the liquid cosmetic compositions of each Example and Comparative Example. Specifically, applicator C was used in Examples 1-2 and 5-6, applicator B was used in Example 3, and applicator A was used in Examples 4 and 7 and Comparative Examples 1-3. 【0093】 (Abrasion resistance test) <Testing Method> Using a drawing test machine (model PM006, manufactured by Pentel), writing was performed under the conditions of an axial angle of 65°±5° relative to the horizontal direction of the applicator and a writing speed of 7cm / sec. The brush tip was rotated 90° axially every 25m of writing. Writing was performed for 100m while adjusting the writing load to be between 1gf and 3gf, and the line width to be 1±0.2mm. <Evaluation Method> As described above, after writing for 100m, the hair length reduction rate [(L0-L1) / L0] was calculated from the hair length measured before the start of the test (L0) and the hair length measured after the test (L1). 【0094】 (Monitoring test) <Testing Method> Ten monitors (evaluators) were each given samples (liquid cosmetic and applicator) of each example and comparative example. For 30 days, they applied the sample to their skin once a day using the same applicator. In addition, on the final day (day 30), they also used an unused (new) sample (liquid cosmetic and applicator). The monitors were then surveyed about any differences in the feel of the sample used for 30 days compared to the unused sample. <Evaluation Method> We asked 10 people to rate the ease of use (how easy it was to draw with) of both a sample that had been used for 30 days and an unused sample, using a 5-point scale from 1 to 5. The average of these scores was used as the final score. 5: Very good 4: Good 3: Neither good nor bad 2: Bad 1: Very poor 【0095】 (Test results) The results of the abrasion resistance test and monitoring test described above are shown in Table 3. In Table 3, "Difference" in the monitoring test represents the difference between the score of the unused product and the score of the used product. 【0096】 [Table 3] 【0097】 In Examples 1-7, the rate of reduction in bristle length in the abrasion resistance test was 15% or less, which is lower than the rate of reduction in bristle length in Comparative Examples 1-3 (bristle length reduction rate of 32% to 38%), indicating suppressed wear of the brush tip (brush part). Furthermore, in Examples 1-7, the difference in the score regarding the feel of the sample between the used product (used continuously for 30 days) and the unused product in the monitor test was small. 【0098】 This is thought to be because, during application, a film of liquid cosmetic is formed on the applicator, and during application, the film does not peel off from the skin and the surface of the applicator, but rather breaks down within the film, creating an abrasion interface within the film, thus preventing direct contact between the surface of the applicator and the skin. Although the films rub against each other at the friction interface, polyoxyethylene behenyl ether acts as a lubricant between the films, and the resin emulsion coated with polyoxyethylene behenyl ether rolls, preventing wear of the films, so that a film can always be present on both the applicator and the skin surface. 【0099】 The results from Examples 2, 5, and 6 suggest that increasing the average number of moles of ethylene oxide added to polyoxyethylene behenyl ether, in particular, increases the affinity between the liquid cosmetic, the applicator, and the skin surface, making it easier to form a film, which is less likely to peel off, and thus further preventing wear of the applicator and damage to the skin. 【0100】 Furthermore, the results from Examples 2-4 suggest that the higher the water absorption rate of the material used for the brush portion of the applicator, the easier it is to form a film between the liquid cosmetic and the surface of the applicator, thereby better preventing wear of the applicator. 【0101】 Furthermore, the results from Examples 2 and 7 show that using a coating tool with a high water absorption rate and polyoxyethylene behenyl ether with a high average number of added moles of ethylene oxide increases their affinity for each other, resulting in a synergistic effect. 【0102】 As described above, it can be seen that the liquid cosmetic composition according to the embodiment of the present invention can effectively suppress damage (such as abrasion) to the skin and the applicator caused by friction during application with the applicator. 【0103】 The contents described in each of the above embodiments can be understood, for example, as follows: 【0104】 (1) A liquid cosmetic composition according to at least one embodiment of the present invention is Water and, Pigments and Solvents and, Emulsion particles of a first copolymer synthesized from alkyl acrylate, alkyl methacrylate, and one or more selected from acrylic acid and methacrylic acid, and styrene, Emulsion particles of a second copolymer synthesized from alkyl acrylate, alkyl methacrylate, and two or more selected from acrylic acid and methacrylic acid, Polyoxyethylene alkyl ethers with an alkyl chain having 22 to 24 carbon atoms, It contains. 【0105】 According to the composition of (1) above, the liquid cosmetic contains emulsion particles of the first copolymer (styrene / acrylates copolymer) and emulsion particles of the second copolymer (alkyl acrylate copolymer). Therefore, when the liquid cosmetic is applied, a film of appropriate hardness can be formed on the skin. 【0106】 Furthermore, according to the configuration of (1) above, the liquid cosmetic contains, in addition to the first copolymer and the second copolymer described above, a polyoxyethylene alkyl ether with an alkyl chain having 22 to 24 carbon atoms. Therefore, in the liquid cosmetic, the first copolymer and the second copolymer each exist as emulsion particles on which the lipophilic portion of the polyoxyethylene alkyl ether (surfactant) is adsorbed. 【0107】 The aforementioned polyoxyethylene alkyl ethers have 24 or fewer carbon atoms in their alkyl chains, making them relatively soluble in aqueous media. Therefore, they readily exhibit moderate surfactant properties. 【0108】 Furthermore, since the polyoxyethylene alkyl ethers described above have 22 or more carbon atoms in their alkyl chains, the lipophilic portion (the alkyl chain portion) exhibits excellent adsorption to the resins (first copolymer and second copolymer). For this reason, the emulsion particles (emulsion particles of the first copolymer and emulsion particles of the second copolymer) can exist stably in the liquid cosmetic. Consequently, the liquid cosmetic present between the applicator and the skin during application tends to have a sparse structure with gaps formed between the emulsion particles. 【0109】 Furthermore, polyoxyethylene alkyl ethers have a hydrophilic portion (the polyoxyethylene chain portion). Therefore, the emulsion particles described above have a high affinity for both the skin and the brush portion of the applicator. Consequently, when applying liquid cosmetics to the skin using an applicator, the emulsion particles adhere easily to the surface of the applicator and the surface of the skin. 【0110】 Here, when applying liquid cosmetics, friction occurs between the skin, the liquid cosmetics, and the applicator as the applicator is moved against the skin. At this time, because the liquid cosmetics between the applicator and the skin have a sparse structure as described above, friction causes cracks to form between the emulsion particles that are in close contact with the skin and the emulsion particles that are in close contact with the surface of the applicator, along the direction in which the applicator moves against the skin (i.e., along the surface of the skin). As a result, the liquid cosmetics containing the emulsion particles separate into a film on the surface of the skin and a film on the surface of the applicator. 【0111】 Furthermore, the polyoxyethylene alkyl ether described above acts as a lubricant in the film of each liquid cosmetic. Therefore, when friction occurs, the emulsion particles constituting the film on the skin surface and the film on the applicator surface roll around. As a result, each film is more likely to be maintained on the skin surface and the applicator surface without breaking. 【0112】 Thus, according to the configuration described in (1) above, the frictional energy generated when liquid cosmetics are applied to the skin is consumed by the formation of cracks between emulsion particles and the rolling of emulsion particles, thereby effectively suppressing damage (abrasion, etc.) to the skin and applicator caused by friction during application. 【0113】 (2) In some embodiments, in the configuration of (1) above, The average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether is 5 or more and 50 or less. 【0114】 According to the configuration described in (2) above, the average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether, which functions as a surfactant, is 5 or more, so the hydrophilicity of the hydrophilic portion of the polyoxyethylene alkyl ether is relatively high. For this reason, the emulsion particles to which the polyoxyethylene alkyl ether is adsorbed in the liquid cosmetic have good affinity with the skin and the applicator, making it easy to form a film of the liquid cosmetic on the surface of the skin and the applicator. Furthermore, according to the configuration described in (2) above, the average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether, which functions as a surfactant, is 50 or less, so a moderate surfactant effect can be obtained, or it can be obtained relatively easily. 【0115】 (3) In some embodiments, in the configuration of (2) above, The average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether is 20 or more and 35 or less. 【0116】 According to the configuration described in (3) above, the average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether, which functions as a surfactant, is 20 or more, so the hydrophilicity of the hydrophilic portion of the polyoxyethylene alkyl ether is higher. As a result, the affinity of the emulsion particles to which the polyoxyethylene alkyl ether is adsorbed in the liquid cosmetic is better with the skin and the applicator, making it easier to form a film of the liquid cosmetic on the surface of the skin and the applicator. Furthermore, according to the configuration described in (3) above, the average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether, which functions as a surfactant, is 35 or less, so a moderate surfactant effect can be obtained, or it can be obtained relatively easily. 【0117】 (4) In some embodiments, in the configuration described in (3) above, The average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether is 30. 【0118】 According to the configuration described in (4) above, the average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether, which functions as a surfactant, is 30, so the hydrophilicity of the hydrophilic portion of the polyoxyethylene alkyl ether is higher. As a result, the affinity of the emulsion particles to which the polyoxyethylene alkyl ether is adsorbed in the liquid cosmetic is better with the skin and the applicator, making it easier to form a film of the liquid cosmetic on the surface of the skin and the applicator. 【0119】 (5) The applicator (100) according to at least one embodiment of the present invention is A brush portion (6) formed from a brush material containing synthetic resin, A liquid container (2) for containing the liquid cosmetic described in any one of the above items (1) to (4) is provided, The liquid cosmetic is supplied from the liquid container to the brush. 【0120】 According to the configuration in (5) above, one of the liquid cosmetics described in (1) to (4) above is supplied to the brush portion of the applicator. Therefore, the frictional energy generated between the brush, the liquid cosmetic, and the skin when the liquid cosmetic is applied to the skin using the applicator is consumed by the formation of cracks between emulsion particles and the rolling of emulsion particles, as described in (1) above. As a result, damage (wear and tear, etc.) to the skin and the brush portion (applicator) due to friction during application can be effectively suppressed. 【0121】 (6) In some embodiments, in the configuration of (5) above, The water absorption rate of the brush material is 0.5% or more and 10.0% or less. 【0122】 According to the configuration described in (6) above, the water absorption rate of the brush material is 0.5% or more, so the affinity between the brush material and the hydrophilic portion of the surfactant (polyoxyethylene alkyl ether) is good. As a result, the affinity between the emulsion particles on which polyoxyethylene alkyl ether is adsorbed in the liquid cosmetic and the brush portion of the applicator is good, so a film of the liquid cosmetic is easily formed on the surface of the brush portion of the applicator. Furthermore, according to the configuration described in (6) above, the water absorption rate of the brush material is 10.0% or less, so the hardness (firmness) of the brush material is less likely to be lost. Therefore, the feel when applying liquid cosmetics with the applicator is less likely to deteriorate. 【0123】 (7) In some embodiments, in the configuration of (6) above, The water absorption rate of the brush material is 1.0% or more and 4.0% or less. 【0124】 According to the configuration described in (7) above, the water absorption rate of the brush material is 1.0% or more, resulting in better affinity between the brush material and the hydrophilic portion of the surfactant (polyoxyethylene alkyl ether). Therefore, the affinity between the emulsion particles on which polyoxyethylene alkyl ether is adsorbed in the liquid cosmetic and the brush portion of the applicator is better, making it easier for a film of the liquid cosmetic to form on the surface of the brush portion of the applicator. Furthermore, according to the configuration described in (7) above, the water absorption rate of the brush material is 4.0% or less, so the hardness (firmness) of the brush material is less likely to be lost. Therefore, the feel when applying liquid cosmetics with the applicator is less likely to deteriorate. 【0125】 Although embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and also includes modified forms of the embodiments described above, as well as forms that combine these forms as appropriate. 【0126】 In this specification, expressions describing relative or absolute arrangements such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "concentric," or "coaxial" shall not only describe such arrangements strictly, but also describe states of relative displacement with tolerances or angles or distances that allow for the same function to be achieved. For example, expressions such as "identical," "equal," and "homogeneous" that describe things being in an equal state not only describe a state of being strictly equal, but also describe a state in which there is a tolerance or a difference that is sufficient to achieve the same function. Furthermore, in this specification, expressions describing shapes such as quadrilaterals and cylindrical shapes shall not only represent geometrically precise quadrilaterals and cylindrical shapes, but also shapes that include uneven surfaces, chamfered surfaces, etc., to the extent that the same effect can be achieved. Furthermore, in this specification, the expressions “equipment,” “includes,” or “possess” of a component are not exclusive expressions that exclude the existence of other components. [Explanation of symbols] 【0127】 1 shaft cylinder 1a Reduced diameter part 2 Liquid storage section 3. Tail plug 4 relay cores 5 Fixed tube 6. Brush section 100 Applicators

Claims

[Claim 1] A brush portion formed from a brush material containing synthetic resin, It comprises a liquid storage section for storing liquid cosmetics, The liquid cosmetic is supplied from the liquid container to the brush portion. Applicator, The aforementioned brush portion is Under the conditions that the axial angle of the applicator with respect to the horizontal direction is 65°±5°, the writing speed is 7 cm / sec, the writing load is 1 gf or more and 3 gf or less, the stroke width is 1 mm±0.2 mm, and the brush part is rotated 90° on its axis every 25 m of writing, when 100 m of writing is performed, the bristle length reduction rate calculated by the following formula (1) is 15% or less. The aforementioned liquid cosmetic composition is Water and, Pigments and Solvents and, Emulsion particles of a first copolymer synthesized from alkyl acrylate, alkyl methacrylate, and one or more selected from acrylic acid and methacrylic acid, and styrene, Emulsion particles of a second copolymer synthesized from alkyl acrylate, alkyl methacrylate, and two or more selected from acrylic acid and methacrylic acid, Polyoxyethylene alkyl ethers with an alkyl chain having 22 to 24 carbon atoms, Contains Applicator. (Formula (1)) (In the formula, L0 represents the bristle length of the brush before writing (mm), and L1 represents the bristle length of the brush after writing (mm).) [Claim 2] The average number of ethylene oxide moles added to the polyoxyethylene alkyl ether is 5 or more and 50 or less. The applicator according to claim 1. [Claim 3] The average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether is 20 or more and 35 or less. The applicator according to claim 2. [Claim 4] The average number of moles of ethylene oxide added to the polyoxyethylene alkyl ether is 30. The applicator according to claim 3. [Claim 5] The water absorption rate of the brush material is 0.5% or more and 10.0% or less. The applicator according to any one of claims 1 to 4. [Claim 6] The water absorption rate of the brush material is 1.0% or more and 4.0% or less. The applicator according to claim 5. [Claim 7] The synthetic resin constituting the brush material includes nylon 66 or nylon 612. The applicator according to any one of claims 1 to 4.

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