Water-based two-layer cosmetic

Abstract

To provide a water-based two-layer cosmetic that does not show a change of color during application, forms a cosmetic film with high uniformity, has excellent adhesion, keeps a cosmetic effect for a long time, prevents the attachment of cosmetics to a mask, and also has excellent re-dispersibility after shaking.SOLUTION: This invention relates to a water-based two-layer cosmetic containing a specific hydrophobic powder, a specific methacrylic silicone graft copolymer, and cellulose fibers with a number average fiber diameter of 2-150 nm.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to an aqueous two-layer cosmetic composition. [Background technology]

[0002] Water-based two-layer cosmetics, especially those containing powder, are in high demand due to the advantage that the external phase is water, providing a moisturizing and refreshing feeling similar to that of lotion. In such water-based two-layer cosmetics, the powder layer or emulsion layer settles when left undisturbed, and the settled layer disperses quickly and uniformly when shaken. However, when left undisturbed, powder aggregation and caking (the powder layer settles hard and becomes difficult to disperse) can occur, resulting in problems such as difficulty in redispersing when shaken, discoloration during application, and a lack of cosmetic durability. On the other hand, in recent years, masks have become commonplace, and when wearing a mask, changes in humidity due to breathing inside the mask and physical friction caused by conversation or changes in facial expression can cause cosmetic coatings to adhere to the mask. Therefore, there is a growing demand for cosmetics that adhere less to masks. Therefore, there has been a demand for the development of an aqueous two-layer cosmetic that not only has the freshness and cool feeling of a lotion, but also has the advantages of redispersibility after shaking, no color change during application, long-lasting makeup, and minimal adhesion to masks.

[0003] In order to solve these problems, for example, Patent Document 1 proposes a technology for a non-emulsified aqueous two-layer makeup cosmetic containing hydrophilic fumed silicic anhydride, a cellulose-based water-soluble polymer, a film-forming agent, a water-soluble salt, and a hydrophobized plate-like powder, in which the powder quickly separates into two layers without caking when left to stand, and when shaken, the powder quickly and uniformly disperses, forming a cosmetic film with good color development and high adhesion, and also having a smooth and refreshing feel when used without any squeaky or sticky feeling. Furthermore, for example, Patent Document 2 discloses a technology for obtaining an aqueous two-layer makeup cosmetic that contains hydrophobically treated powder and polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether, and that is highly stable, easily redispersible, has a beautiful appearance, and also has a moisturizing effect. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-119410 [Patent Document 2] Patent No. 6067162

[0005] In either technology, the product quickly separates into two layers when left to stand, quickly redisperses after shaking, and has a smooth feel when used without any squeaky or sticky feeling. However, the technology lacks technical ideas regarding color change during application, makeup durability, and lack of adhesion to the mask. Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, an object of the present invention is to provide a cosmetic that has a fresh and refreshing feeling like a lotion, has good redispersibility after shaking, does not change color during application, adheres well to the skin, forms a uniform cosmetic film, and has excellent cosmetic durability, and further does not adhere to a mask even when worn. [Means for solving the problem]

[0007] In view of these circumstances, the present inventors conducted extensive research and found that by incorporating a hydrophobically treated powder, a specific (meth)acrylic silicone graft copolymer, and cellulose fibers having a number average fiber diameter of 2 to 150 nm, it is possible to obtain a cosmetic that exhibits good redispersibility after shaking, has a moist and refreshing feeling like a lotion, does not change color during application, has good skin adhesion, and provides long-lasting makeup, even when wearing a mask, and has thus completed the present invention.

[0008] That is, the present invention provides: [1] The following components (A) to (C): (A) Hydrophobic treated powder (B) A (meth)acrylic silicone graft copolymer obtained by reacting radical polymerizable monomers (a), (b), (c), and (d), in which the amounts of (a) and (d) are 20 to 50% by mass, (b) and 0.5 to 4% by mass, and (c) and (d) are 46 to 79.5% by mass, based on the total amount of the radical polymerizable monomers (a), (b), (c), and (d). (C) Cellulose fibers with a number average fiber diameter of 2 to 150 nm The present invention provides an aqueous two-layer cosmetic composition containing the above. The chemical formulas (a) to (d) are described in detail in the description of the preferred embodiment of the invention. [2] The present invention provides an aqueous two-layer cosmetic composition according to [1], wherein the component (A) is a powder that has been treated with one or more treatments selected from the group consisting of oxidized polyethylene treatment, metal soap treatment, phospholipid treatment, ceramide treatment, acylated amino acid treatment, higher fatty acid treatment, higher alcohol treatment, fatty acid ester treatment, wax treatment, and wax treatment. [3] The present invention provides an aqueous two-layer cosmetic according to [1], wherein the component (A) is a powder that has been treated with a surface treatment agent having a fatty group having 14 to 24 carbon atoms. [4] The present invention provides an aqueous two-layer cosmetic composition according to [1], wherein the mass ratio of the components (A), (B), and (C) is (A) / [(B)+(C)]=1 to 80. [Effects of the Invention]

[0009] The aqueous two-layer cosmetic composition of the present invention does not change color during application, forms a highly uniform cosmetic film, has good adhesion, and provides long-lasting cosmetic results. Furthermore, the cosmetic composition adheres less to a mask, and has excellent redispersibility after shaking. DETAILED DESCRIPTION OF THE INVENTION

[0010] Preferred embodiments of the present invention will be described in detail below. However, the present invention is not limited to the following preferred embodiments and can be freely modified within the scope of the present invention. In this specification, the symbol "to" means a range including the numerical values ​​before and after it. In this specification, percentages are expressed by mass unless otherwise specified. The "average particle size" of the powder in the present invention refers to D50, which is evaluated using image analysis. The average particle size of the powder is determined by observing the surface condition using a scanning electron microscope (JEOL Ltd., JSM-7800prime) and measuring with an image analyzer (Luzex AP, Nireco Corporation) to obtain the value (D50).

[0011] The hydrophobized powder of component (A) used in the present invention is a powder that has been subjected to a hydrophobization treatment using a known technique. The powder is not particularly limited in terms of shape (e.g., spherical, plate-like, acicular, or irregular), particle size (e.g., mist-like, fine particle, or pigment-grade), particle structure (e.g., porous or non-porous), etc., as long as it is one that is commonly used in the cosmetic field, and examples of such powder include inorganic powders, glitter powders, organic powders, pigment powders, metal powders, and composite powders. Specific examples include white inorganic pigments such as titanium oxide, zinc oxide, cerium oxide, and barium sulfate; colored inorganic pigments such as iron oxide, carbon black, titanium-titanium oxide sintered product, chromium oxide, chromium hydroxide, iron blue, and ultramarine; talc, muscovite, phlogopite, lepidolite, biotite, synthetic mica, sericite (sericite), synthetic sericite, kaolin, silicon carbide, bentonite, smectite, silicic acid anhydride, aluminum oxide, magnesium oxide, zirconium oxide, diatomaceous earth, aluminum silicate, magnesium aluminum metasilicate, calcium silicate, barium silicate, magnesium silicate, calcium carbonate, magnesium carbonate, hydroxyapatite, and white filler powders such as boron nitride; titanium dioxide-coated mica, titanium dioxide-coated bismuth oxychloride, iron oxide-treated mica titanium, iron blue-treated mica titanium, carmine-treated mica titanium, bismuth oxychloride, fish scale foil, polyethylene terephthalate-aluminum-epoxy laminated powder, polyethylene terephthalate Photoluminescent powders such as polyethylene terephthalate-polyolefin laminated film powder, polyethylene terephthalate-polymethyl methacrylate laminated film powder, synthetic resins such as polyamide resins, polyethylene resins, polyacrylic resins, polyester resins, fluorine resins, polystyrene resins, styrene-acrylic copolymer resins, organic polymer resin powders such as polypropylene resins and urethane resins, organic low molecular weight powders such as zinc stearate and N-acyl lysine, natural powders such as silk powder, etc. Natural organic powders, organic pigment powders such as Red No. 201, Red No. 202, Red No. 205, Red No. 226, Red No. 228, Orange No. 203, Orange No. 204, Blue No. 404, Yellow No. 401, Black No. 401, Brown No. 201, Purple No. 401, Blue No. 1, Blue No. 2, Blue No. 203, Blue No. 205, Green No. 3, Green No. 201, Green No. 204, Green No. 205, Green No. 401, Green No. 402, Yellow No. 4, Yellow No. 5, Yellow No. 202(1), Yellow No. 202(2), Yellow No. 203, Yellow No. 402,Examples of suitable pigments include organic pigment powders such as zirconium, barium, or aluminum lakes, such as those listed in Yellow No. 403 (1), Yellow No. 406, Yellow No. 407, Orange No. 205, Orange No. 402, Red No. 2, Red No. 3, Red No. 102, Red No. 104 (1), Red No. 105 (1), Red No. 106, Red No. 227, Red No. 230 (1), Red No. 231, Red No. 401, Red No. 502, Red No. 503, Red No. 504, and Red No. 506; metal powders such as aluminum powder, gold powder, and silver powder; and composite powders such as fine particle titanium oxide-coated mica titanium, fine particle zinc oxide-coated mica titanium, barium sulfate-coated mica titanium, titanium oxide-containing silicon dioxide, and zinc oxide-containing silicon dioxide. These powders can be used alone or in combination of two or more.

[0012] The treating agent used to hydrophobize component (A) used in the present invention is not particularly limited as long as it imparts hydrophobicity to the powder. The degree of hydrophobicity of the entire hydrophobized powder obtained by this hydrophobization treatment is not particularly limited, but it is preferable that when component (A) is added to a liquid phase in which a triglyceride oil solution and a powder are mixed, component (A) is easily dispersed at the interface between the oil solution phase and the aqueous phase, or is easily dispersed in the oil solution phase. Examples of such hydrophobic treatments include polyethylene oxide treatment, metal soap treatment, phospholipid treatment, ceramide treatment, acylated amino acid treatment, silicone compound treatment, fluorine treatment, hydrocarbon treatment, higher fatty acid treatment, higher alcohol treatment, fatty acid ester treatment, wax treatment, and the like, which may be used alone or in combination of two or more. Among these, for example, polyethylene oxide treatment, metal soap treatment, phospholipid treatment, ceramide treatment, acylated amino acid treatment (e.g., lauroyl lysine treatment, sodium dilauroyl glutamate lysine treatment, disodium stearoyl glutamate treatment, sodium lauroyl aspartate treatment), higher fatty acid treatment, higher alcohol treatment, fatty acid ester treatment, wax treatment, and the like are preferred. Furthermore, polyethylene oxide treatment, metal soap treatment, phospholipid treatment, ceramide treatment, and acylated amino acid treatment are particularly preferred, with polyethylene oxide treatment being even more preferred. Treatment with these treatments is preferred in that caking is less likely to occur even when the powder layer settles upon standing. Preferably, the powder is treated with a treating agent having an aliphatic group with 14 or more carbon atoms, and more preferably, the powder is treated with a treating agent having an aliphatic group with 14 to 24 carbon atoms.

[0013] The hydrophobic treatment of the component (A) can be carried out in accordance with conventional methods, such as mixing, heating, baking, or gas-phase polymerization, and may be either a wet or dry method. The amount of hydrophobic treatment agent to be applied to the powder is not particularly limited, but is generally preferably 0.05 to 15%, more preferably 0.1 to 10%, and even more preferably 0.2 to 5%.

[0014] The content of component (A) in the present invention is not particularly limited, but the lower limit is preferably 5% by mass (hereinafter abbreviated as %) or more, more preferably 8% or more, and even more preferably 10% or more. The lower limit is preferably 35% or less, more preferably 30% or less, and even more preferably 25% or less. The range is preferably 5 to 35% by mass, more preferably 8 to 30%, and even more preferably 10 to 25%. This range is preferable in that there is no color change during application, the cosmetic film is excellent in uniformity, and the cosmetic film clearly separates into two layers when left to stand.

[0015] The (meth)acrylic silicone graft copolymer of component (B) used in the present invention is a polymer obtained by reacting at least the following radically polymerizable monomers (a), (b), (c), and (d), and also includes polymers obtained by adding and reacting copolymerizable monomers other than (a) to (d). In the present invention, (meth)acrylic is meant to include acrylic and methacrylic. The proportions of each monomer to be charged are (a) 20-50% by mass, (b) 0.5-4% by mass, and (c) + (d) 46-79.5% by mass, based on the total of the monomers (a) to (d). When copolymerizable monomers other than (a) to (d) are used, the total of the monomers (a) to (d) is preferably 66.5% by mass or more of the total. In particular, (a) 30-45% by mass and (b) 1-4% by mass are preferred. In the present invention, the charging ratio of the monomers is substantially the same as the composition ratio of the monomers in the copolymer. The (meth)acrylic silicone graft copolymer of the present invention has a viscosity (unit: mPa·s=CS) of preferably 50 to 250, more preferably 70 to 150, when the copolymer is dissolved in 99.5% ethanol to give a 20% by mass ethanol solution, as measured at 25°C using a B-type rotational viscometer. Furthermore, the (meth)acrylic silicone graft copolymer of the present invention includes various forms such as a random copolymer and a block copolymer.

[0016] The monomers that are the raw materials for the copolymer will be described below. (a) a radical polymerizable monomer represented by general formula (I)

[0017] [ka]

[0018] In the formula, Me represents a methyl group, and R1 represents a hydrogen atom or a methyl group. R2 represents a linear or branched divalent saturated hydrocarbon group having 1 to 10 carbon atoms, which may contain one or two ether bonds. Specifically, examples thereof include -CH2-, -(CH2)2, -(CH2)5-, -(CH2) 10 Examples include -, -CH2-CH(CH3)-CH2-, -CH2CH2OCH2CH2CH2-, -CH2CH2OCH2(CH3)CH2-, -CH2CH2OCH2CH2CH2OCH2CH2CH2- and the like. R3 represents a saturated hydrocarbon group having 1 to 10 carbon atoms, and specific examples thereof include alkyl groups having 1 to 10 carbon atoms such as methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, i-butyl, t-butyl, n-pentyl, n-hexyl, n-nonyl, isononyl, and n-decyl; cycloalkyl groups having 1 to 10 carbon atoms such as cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, and cyclododecyl; and cycloalkylalkyl groups having 1 to 10 carbon atoms such as cyclopropylmethyl, 2-cyclopropylethyl, cyclobutylmethyl, cyclopentylmethyl, 3-cyclopentylpropyl, cyclohexylmethyl, 2-cyclohexylethyl, cycloheptylmethyl, and cyclooctylmethyl. m represents an integer of 5 to 100.

[0019] Specific examples of the monomer represented by formula (I) include the following: In the following formula, Me represents a methyl group, and n-Bu represents an n-butyl group.

[0020] [ka]

[0021] (b) a radical polymerizable monomer represented by formula (II) or (III) The component (b) is at least one or more cationic compounds selected from the group consisting of cationic compounds represented by the following formula (II) and formula (III).

[0022] [ka]

[0023] [ka]

[0024] In formula (II), R4 represents a hydrogen atom or a methyl group. R5, R6, and R7 may be the same or different and represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, an s-butyl group, an i-butyl group, and a t-butyl group. Among these, a methyl group is particularly preferred. X represents -O-, -NH-, -O-CH2- or -O-CH2CH(OH)-, and is particularly preferably -NH. Y represents a linear or branched divalent saturated hydrocarbon group having 1 to 4 carbon atoms, and examples thereof include -CH2-, -(CH2)2, -(CH2)3-, -(CH2)4-, -CH2-CH(CH3)-CH2-, etc. -(CH2)2 is particularly preferred. Z - is a counter anion, and examples thereof include chloride ion, bromide ion, hydrogen sulfate ion, nitrate ion, perchlorate ion, boron tetrafluoride ion, and phosphorus hexafluoride ion.

[0025] In formula (III), R8 and R9 may be the same or different and represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. Examples of the alkyl group having 1 to 4 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, an s-butyl group, an i-butyl group, and a t-butyl group. R10 and R11 may be the same or different and represent a hydrogen atom or an alkyl group having 1 to 18 carbon atoms. Examples of the alkyl group having 1 to 18 carbon atoms include a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, an s-butyl group, an i-butyl group, a t-butyl group, an n-pentyl group, an n-hexyl group, an n-nonyl group, an isononyl group, an n-decyl group, a lauryl group, a tridecyl group, a myristyl group, an n-pentadecyl group, a palmityl group, a heptadecyl group, and a stearyl group.

[0026] (c) a radical polymerizable monomer represented by formula (IV)

[0027] [ka]

[0028] In the formula, R12 represents a hydrogen atom or a methyl group. R13 represents a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms, and examples of the linear or branched alkyl group having 1 to 3 carbon atoms include a methyl group, an ethyl group, an n-propyl group, and an i-propyl group. An ethyl group is particularly preferred.

[0029] (d) A radical polymerizable monomer represented by formula (V)

[0030] [ka]

[0031] In the formula, R14 represents a hydrogen atom or a methyl group. R15 represents a hydroxyalkyl group having 1 to 4 carbon atoms, and examples thereof include a hydroxymethyl group, a 2-hydroxyethyl group, a 3-hydroxy-n-propyl group, a 4-hydroxy-n-butyl group, etc. In particular, a 2-hydroxyethyl group is preferred.

[0032] The component (B) in the present invention can be used singly or in combination of two or more, and its content is not particularly limited, but is preferably 0.01 to 5%, more preferably 0.05 to 3%, and particularly preferably 0.05 to 1%. A content of component (B) in this range is more preferable in terms of excellent adhesion to the skin, cosmetic durability, and lack of adhesion to masks.

[0033] The cellulose fibers (component (C)) used in the present invention, having a number-average fiber diameter of 2 to 150 nm, are obtained by pulverizing the raw material, natural cellulose. The method for pulverization is not particularly limited, and examples include mechanical pulverization using a high-pressure homogenizer or ball mill, chemical pulverization using an N-oxyl compound such as 2,2,6,6-tetramethylpiperidine (TEMPO) to oxidize and pulverize cellulose, and biological pulverization using enzymes such as cellulase. Among these, chemical pulverization is preferred because the carboxyl groups generated by the oxidation of hydroxyl groups in cellulose during the oxidation reaction contribute to improved impact resistance. The origin of natural cellulose is not particularly limited, and examples include those biosynthesized by plants, animals, and microorganisms. Furthermore, the number-average fiber diameter of component (C) in the present invention is 2 to 150 nm, more preferably 2 to 100 nm, and even more preferably 2 to 50 nm. This range is preferred from the viewpoints of preventing caking and redispersibility. Component (C) of the present invention may have anionic groups such as carboxyl groups, phosphate groups, or sulfate groups on the surface.

[0034] In the present invention, the number average fiber diameter and particle diameter of component (C) are measured by observing the surface condition using an electron microscope and calculating the long diameter of the fiber diameter for 20 fibers and particles in an arbitrary field of view from the results.

[0035] The component (C) of the present invention may be contained in the form of a crushed powder or in a state dispersed in water. In particular, when it is contained in the form of an aqueous dispersion, the cellulose fiber is well dispersed in the cosmetic, and is preferred from the viewpoints of preventing powder caking and improving redispersibility. When used as an aqueous dispersion, the content of cellulose fiber in the aqueous dispersion is preferably 0.1 to 10%, more preferably 0.5 to 5%.

[0036] Commercially available water-dispersible products include Binfis BMa-10002 (number average fiber diameter 35 nm) (manufactured by Sugino Machine Ltd.), ACC nanocellulose CNF-1 (number average fiber diameter 20 nm) (manufactured by Chuetsu Pulp Co., Ltd.), Rheocrysta C-2SP (number average fiber diameter 10 nm) (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), and Celish FD-100S (number average fiber diameter 15 nm) (manufactured by Daicel FineChem Ltd.). One or more of these may be used in combination.

[0037] The content of component (C) in the present invention is not particularly limited, but from the viewpoints of improving redispersibility by preventing powder caking and preventing adhesion to the mask, it is preferably 0.001 to 1%, and more preferably 0.01 to 0.5%, of the total amount of the cosmetic.

[0038] The mass ratio (B) / (C) of components (B) and (C) in the present invention is not particularly limited, but the lower limit is preferably 0.5 or more, more preferably 1.0 or more, and even more preferably 2.0 or more. The upper limit is preferably 20.0 or less, more preferably 10.0 or less, and even more preferably 8 or less. This range is preferable in terms of uniformity of the cosmetic film, cosmetic durability, and lack of adhesion to masks. Furthermore, the lower limit of the ratio of the mass proportions of the components (A), (B), and (C) in the present invention, (A) / [(B)+(C)], is preferably 1 or more, more preferably 3 or more, and even more preferably 10 or more. The upper limit is preferably 80 or less, more preferably 70 or less, and even more preferably 50 or less. This range is more preferable in terms of adhesion and non-adhesion to the mask.

[0039] In addition to the above-mentioned components, further preferred components may be added to the aqueous two-layer cosmetic composition of the present invention.

[0040] In addition to the above components, the aqueous two-layer cosmetic of the present invention preferably further contains component (D), hydrophilic fumed silicic anhydride. Component (D) hydrophilic fumed silicic anhydride is added for the purpose of preventing caking of hydrophobically treated powder. The shape and average particle size of hydrophilic fumed silicic anhydride commonly used in cosmetics are not particularly limited, but an average particle size of 5 nm to 5 μm is preferred. Examples of commercially available products include AEROSIL 380S (manufactured by Nippon Aerosil Co., Ltd., average particle size: 5 to 7 nm), AEROSIL 200 (manufactured by Nippon Aerosil Co., Ltd., average particle size: 10 to 15 nm), AEROSIL 300 (manufactured by Nippon Aerosil Co., Ltd., average particle size: 5 to 10 nm), and Nipsil E-220 (manufactured by Nippon Silica Kogyo Co., Ltd., average particle size: 1 to 2.5 μm). These can be used singly or in combination as needed.

[0041] The content of component (D) is not particularly limited, but is preferably 0.01 to 0.5%. This range is preferable from the viewpoints of improving redispersibility by preventing powder caking and preventing adhesion to the mask.

[0042] In addition to the above components, the aqueous two-layer cosmetic of the present invention preferably contains (E) a water-soluble salt. Component (E) water-soluble salt acts as a soft flocculant for the hydrophobic-treated powder of component (A) and contributes to the rapid sedimentation of component (A). Component (E) is not particularly limited, and any water-soluble salt commonly used in cosmetics can be used. Specific examples include aluminum chloride, sodium chloride, potassium chloride, magnesium chloride, calcium chloride, ammonium chloride, disodium edetate, sodium citrate, sodium carbonate, sodium sulfate, trisodium phosphate, tetrasodium edetate tetrahydrate, sodium DL-malate, sodium bicarbonate, tetrasodium edetate dihydrate, trisodium edetate, sodium L-tartrate, sodium dihydrogen phosphate, sodium monohydrogen phosphate, and sodium bisulfite. One or more of these can be used as needed. Among these, sodium chloride and calcium chloride are preferred due to their low skin irritation and versatility in cosmetics.

[0043] The content of component (E) is not particularly limited, but is preferably 0.001 to 5%, more preferably 0.01 to 1%. This range is preferable from the viewpoints of improving redispersibility by preventing powder caking and facilitating sedimentation of two-layer separation.

[0044] Furthermore, by including a lower alcohol and / or a polyhydric alcohol as component (F), the uniformity and adhesion of the cosmetic film and the dispersibility of powder can be further improved, and in the case of a polyhydric alcohol, the moisturizing feeling can be enhanced, particularly in terms of the sensation of use.

[0045] The lower alcohol of component (F) is not particularly limited, but examples thereof include ethyl alcohol and butyl alcohol.

[0046] As the polyhydric alcohol of component (F), any saturated or unsaturated, linear or branched polyhydric alcohol can be used as long as it is soluble in water, and specific examples include glycols such as diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, and 1,3-butylene glycol, and glycerols such as glycerin, diglycerin, and polyglycerin, and one or more of these can be used. Among these, ethyl alcohol is preferred to further improve the dispersibility of powder, and 1,3-butylene glycol and glycerin are preferred to improve the moisturizing feeling.

[0047] The content of component (F) is not particularly limited, but is preferably 0.1 to 30%. This range is preferable because it further improves the uniformity of the cosmetic film and the dispersibility of the powder, and when a polyhydric alcohol is contained, it also provides a more excellent moisturizing feel.

[0048] In addition to the above-mentioned components (A) to (F), the aqueous two-layer cosmetic composition of the present invention may contain other components commonly used in cosmetics, such as aqueous components other than component (F), oils, surfactants, ultraviolet absorbers, moisturizers, antioxidants, cosmetic ingredients, sugars, preservatives, fragrances, etc., so long as the effects of the present invention are not impaired. Furthermore, the aqueous two-layer cosmetic of the present invention exhibits good aqueous dispersion even with trace amounts of surfactant and oil, thereby enabling the cosmetic to have a longer lasting effect.

[0049] The aqueous component may be any component that is soluble or dispersible in water, and examples thereof include plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, and rose. Examples of water-soluble polymers include cellulose derivatives such as methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, and carboxymethylcellulose; natural polymers such as sodium alginate, carrageenan, quince seed gum, agar, gelatin, xanthan gum, locust bean gum, pectin, and gellan gum; and synthetic polymers such as polyvinyl alcohol, carboxyvinyl polymer, alkyl-added carboxyvinyl polymer, sodium polyacrylate, sodium polymethacrylate, polyacrylic acid glycerin ester, and polyvinylpyrrolidone. One or more of these may be used.

[0050] Examples of oils include liquid oils such as liquid paraffin, squalane, and petrolatum; solid oils such as paraffin wax, ceresin wax, microcrystalline wax, polyethylene wax, and Fischer-Tropsch wax; fats and oils such as olive oil, castor oil, jojoba oil, mink oil, and macadamia nut oil; esters such as cetyl isooctanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, isotridecyl isononanoate, pentaerythritol rosinate, cholesterol fatty acid esters, and di(cholesteryl-behenyl-octyldodecyl) N-lauroyl-L-glutamate; and silicone oils such as dimethylpolysiloxane, cyclic silicone, phenyl-modified polysiloxane, fluorine-modified polysiloxane, amino-modified polysiloxane, and alkyl-modified polysiloxane.

[0051] The surfactant may be any that is used in cosmetics, and examples thereof include anionic surfactants such as inorganic or organic salts of fatty acids such as stearic acid and lauric acid, alkylbenzene sulfates, alkyl sulfonates, α-olefin sulfonates, dialkyl sulfosuccinates, α-sulfonated fatty acid salts, acylmethyl taurines, N-methyl-N-alkyl taurines, polyoxyethylene alkyl ether sulfates, polyoxyethylene alkyl phenyl ether sulfates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, polyoxyethylene alkyl phenyl ether phosphates, and N-acyl-N-alkylamino acid salts; cationic surfactants such as alkylamine salts, polyamine and alkanoylamine fatty acid derivatives, alkylammonium salts, and alicyclic ammonium salts; and amphoteric surfactants such as phospholipids and N,N-dimethyl-N-alkyl-N-carboxymethylammonium betaine. These may be used alone or in combination.

[0052] The ultraviolet absorber may be any one that is normally used in cosmetics, and examples of the benzophenone-based ultraviolet absorber include 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, sodium 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, and sodium 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5-sulfonate. ammonium, 2,4-dihydroxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2,4,6-trianilino-para-(carbo-2'-ethylhexyl-1'-oxy)-1,3,5-triazine, 2,4-bis[{4-(2-ethylhexyloxy)-2-hydroxy}-phenyl]-6-(4-methoxyphenyl)-(1,3,5)-triazine, 2-2'-methylene-bis-{6-(2H-benzotriazol-2-yl)-4-(1,1,3 ,3-tetramethylbutyl)phenol}, etc., and examples of PABA-based benzoates include p-aminobenzoic acid, ethyl p-aminobenzoate, glyceryl p-aminobenzoate, amyl p-dimethylaminobenzoate, 2-ethylhexyl p-dimethylaminobenzoate, ethyl p-dihydroxypropylbenzoate, hexyl 2-{4-(diethylamino)-2-hydroxybenzoyl}benzoate, etc., and examples of cinnamic acid-based benzoates include 2-ethylhexyl p-methoxycinnamate, 4- Examples of the salicylic acid-based surfactants include 2-ethylhexyl salicylate, phenyl salicylate, and homomenthyl salicylate. Examples of the dibenzoylmethane-based surfactants include 4-tert-4'-methoxydibenzoylmethane and 2-2'-methylene-bis-{6-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol}. These can be used alone or in combination of two or more.

[0053] Examples of moisturizing agents include proteins, mucopolysaccharides, collagen, elastin, keratin, and heparin-like substances; examples of antioxidants include α-tocopherol and ascorbic acid; examples of cosmetic ingredients include vitamins, anti-inflammatory agents, and herbal medicines; and examples of preservatives include chlorphenesin, parahydroxybenzoic acid esters, and phenoxyethanol.

[0054] The aqueous two-layer cosmetic of the present invention can be applied to makeup cosmetics, skin care cosmetics, etc., and can be in the form of a liquid, gel, or the like. Examples of product forms include foundation, makeup base, blush, face powder, eye shadow, sunscreen, antiperspirant, etc. The aqueous two-layer type refers to a product in which the outer layer is water and the water layer and powder separate into two or more layers. It may contain an oil, the oil and powder may be separated in a mixed state, or the oil may be dispersed in the water layer. The oil may be in an emulsified state or adsorbed to the powder. The location of the oil is not particularly limited, and therefore the transparency of the water layer is not particularly limited. The interface state of the two-layer separation is also not particularly limited, but the powder layer will separate when left to stand for a certain period of time. Depending on the method of shaking or the nature of the container, the powder may separate into upper and lower layers of the water layer. A clean interface separation into two layers is preferable in terms of aesthetic appearance, evoking a fresh, moist feeling.

[0055] The aqueous two-layer cosmetic composition of the present invention may also include the following inventions. [5] The aqueous two-layer cosmetic preparation according to any one of claims 1 to 3, wherein the mass ratio of component (A), component (B), and component (C) is (A) / [(B)+(C)]=1 to 80. [Example]

[0056] The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

[0057] Examples of the production of the (meth)acrylic silicone graft copolymer are shown below, but are not particularly limited.

[0058] [Manufacturing Example 1] In a three-neck flask under a nitrogen atmosphere, 100 g of isopropanol (IPA) (Note 1) was stirred at 70-80°C and the following mixture was added over 3-4 hours: 4 g of dimethyl 2,2-azobis(2-methylpropionate) (V-601) (Note 2), 40 g of methacrylate-terminated dimethylpolysiloxane (X-24-8201) (Note 3), 31 g of ethyl acrylate (EA) (Note 4), 27 g of 2-hydroxyethyl methacrylate (HEMA) (Note 5), 4 g of 3-trimethylammonium propyl methacrylamide chloride (MAPTAC) (Note 6), and 50 g of isopropanol (Note 1). Next, 1 g of dimethyl 2,2-azobis(2-methylpropionate) (Note 2) dissolved in isopropanol was added, and the mixture was allowed to react for 5 hours at a temperature range of 70-80°C, resulting in a viscous solution. This solution was poured into purified water to precipitate the graft polymer, and the precipitate was then filtered off and dried under reduced pressure at 80°C to obtain 87 g of a transparent rubbery product. The obtained rubber-like substance was confirmed to be the desired (meth)acrylic silicone graft copolymer by infrared absorption spectroscopy (the product was confirmed to be a polymer containing dimethylpolysiloxane, amide bonds, ester bonds, alkyl groups, and hydroxyl groups). The monomers were charged in the following proportions: MAPTAC:EA:HEMA:X-24-8201=2:31:27:40 (Note 1) IPA manufactured by Kanto Chemical Co., Ltd. (Note 2) V-601 manufactured by Wako Pure Chemical Industries, Ltd. (Note 3) X-24-8201 manufactured by Shin-Etsu Chemical Co., Ltd. (Note 4) EA manufactured by Kanto Chemical Co., Ltd. (Note 5) HEMA manufactured by Kanto Chemical Co., Ltd. (Note 6) MAPTAC, manufactured by Evonik Degussa Japan Co., Ltd., 50% aqueous solution

[0059] [Manufacturing Example 2] In a three-neck flask under a nitrogen atmosphere, 50 g of isopropanol (Note 1) was stirred at 70-80°C, and 4 g of dimethyl 2,2-azobis(2-methylpropionate) (Note 2), 40 g of methacrylate-terminated dimethylpolysiloxane (X-22-174DX) (Note 7), 31 g of ethyl acrylate (Note 4), 27 g of 2-hydroxyethyl methacrylate (Note 5), 4 g of 3-trimethylammoniumpropylmethacrylamide chloride (Note 6), and 170 g of isopropanol (Note 1) were added over 3-4 hours. Next, 1 g of dimethyl 2,2-azobis(2-methylpropionate) (Note 2) dissolved in isopropanol was added, and the mixture was allowed to react for 5 hours at a temperature range of 70-80°C, yielding a viscous solution. This solution was poured into purified water to precipitate the graft polymer, and the precipitate was then filtered off and dried under reduced pressure at 80°C to obtain 90 g of a transparent rubbery product. The obtained rubber-like material was confirmed to be the desired (meth)acrylic silicone graft copolymer by infrared absorption spectroscopy. The monomers were charged in the following proportions: MAPTAC:EA:HEMA:X-22-174DX=2:31:27:40 (Note 7) X-22-174DX manufactured by Shin-Etsu Chemical Co., Ltd.

[0060] [Manufacturing Example 3] In a three-neck flask under a nitrogen atmosphere, 100 g of isopropanol (Note 1) was stirred at 70-80°C and 4 g of dimethyl 2,2-azobis(2-methylpropionate) (Note 2), 40 g of methacrylate-substituted dimethylpolysiloxane (X-22-174ASX) (Note 8), 31 g of ethyl acrylate (Note 4), 27 g of 2-hydroxyethyl methacrylate (Note 5), 4 g of 3-trimethylammoniumpropylmethacrylamide chloride (Note 6), and 50 g of isopropanol (Note 1) were added over 3-4 hours. Next, 1 g of dimethyl 2,2-azobis(2-methylpropionate) (Note 2) dissolved in isopropanol was added, and the mixture was allowed to react for 5 hours at a temperature range of 70-80°C, yielding a viscous solution. This solution was poured into purified water to precipitate the graft polymer, and the precipitate was then filtered off and dried under reduced pressure at 80°C to obtain 83 g of a transparent rubbery product. The obtained rubber-like material was confirmed to be the desired (meth)acrylic silicone graft copolymer by infrared absorption spectroscopy. The monomers were charged in the following proportions: MAPTAC:EA:HEMA:X-22-174ASX=2:31:27:40 (Note 8) X-22-174ASX manufactured by Shin-Etsu Chemical Co., Ltd.

[0061] Examples 1 to 18 and Comparative Examples 1 to 6: Foundation The aqueous two-layer foundation shown in Table 1 below was prepared by the following manufacturing method, and evaluated using the following evaluation methods for each of the following items: (a) lack of color change during use, (b) uniformity of cosmetic film, (c) adhesion, (d) makeup durability, (e) lack of adhesion to masks, and (f) redispersibility. The results are also shown in Tables 1 and 2.

[0062] [Table 1] *1: KP-561P (Shin-Etsu Chemical Co., Ltd.) *4: God Ball E-90C (manufactured by Suzuki Oil Industries Co., Ltd.) *5: AEROSIL 200 (manufactured by Nippon Aerosil Co., Ltd.) *6: Leocrysta C-2SP (manufactured by Daiichi Kogyo Co., Ltd.) *7: Binfis BMa-10002 (manufactured by Sugino Machine) *10: PI-TR-8 (Miyoshi Chemicals Co., Ltd.) *11: PI-TA-46R ((manufactured by Miyoshi Kasei) *12:PI-R-216P-8 (manufactured by Miyoshi Kasei) *13:PI-YHP-8 (manufactured by Miyoshi Kasei Co., Ltd.) *14: PI-BHP-8 (Miyoshi Chemicals Co., Ltd.)

[0063] [Table 2] *2: KP-578 (Shin-Etsu Chemical Co., Ltd.) *3: MERQUAT 3331PR (manufactured by Lubrizol Japan) *8: Zeolus PH-F20JP (manufactured by Asahi Kasei Chemicals Corporation) *9: NATROSOL250 HHR (manufactured by ASHLAND SPECIALTY INGREDIENTS)

[0064] (Manufacturing method) (Tables 1 and 2) A: Components (1) to (23) are mixed as shown in Tables 1 and 2 and processed in a three-roll mill. B: Components (24) to (34) are contained as shown in Tables 1 and 2, and are mixed and dissolved uniformly. C: A was added to B and dispersed uniformly using a disperser to obtain a water-based two-layer foundation.

[0065] (Evaluation method) The following evaluation items were evaluated by the following methods. (Evaluation items) a) No color change during use B) Uniformity of cosmetic film c) Adhesion D) Makeup durability E) Lack of adhesion to the mask F) Redispersibility Each sample was tested by a panel of 20 cosmetic evaluation experts, who rated each item on a scale of one to five according to the following criteria, and the average score of all panelists for each sample was then judged according to the following criteria. (i) Regarding the lack of color change during use, each sample was applied and evaluated to see whether the hue, brightness, and saturation of the sample color changed during application. (b) Regarding the uniformity of the cosmetic film, each sample was applied and evaluated to see if the sample adhered evenly to the applied surface and if the cosmetic film was uniform. (c) Adhesion: Each sample was applied to the skin, and the test was conducted to evaluate whether the sample adhered to the skin uniformly at a constant rate from the beginning. 2. Regarding makeup durability, each sample was evaluated to see whether the makeup remained in the same condition as immediately after application 6 hours after application. E. Regarding lack of adhesion to masks, each sample was applied to a panel, who was asked to wear a mask and go about their normal daily lives, and the state of adhesion of the foundation to the mask was evaluated after 6 hours. (f) Regarding redispersibility, each sample was filled into a standard No. 8 glass bottle with an inner mouth diameter of approximately 3 cm and a height of approximately 8 cm, and after leaving it to stand at room temperature for one week, it was shaken 20 times and the dispersion state of the powder in the container was judged using the following five-point rating criteria.

[0066] (Evaluation criteria) (Rating): (Evaluation) 5: Very good 4: Good 3: Normal 2: Bad 1: Very bad (Judgment criteria) (Judgment): (Average score) ◎: 4.0 or higher ○: 3.5 points or more and less than 4.0 points △: 2.0 points or more and less than 3.5 points ×: Less than 2.0 points

[0067] As is clear from the results in Tables 1 and 2, the aqueous two-layer foundations of Examples 1 to 18 of the present invention were excellent in all aspects, including the lack of color change during use, the uniformity of the cosmetic film, adhesion, makeup durability, lack of adhesion to masks, and redispersibility. In contrast, Comparative Example 1, which did not contain component (A), experienced a color change during use and lacked uniformity in the cosmetic film. Comparative Examples 2, 3, and 4, which did not contain component (B), lacked adhesion, and Comparative Example 3 in particular was poor in makeup retention and lack of adhesion to the mask. Comparative Example 4 significantly lacked uniformity in the cosmetic film. Comparative Example 5, which used crystalline cellulose with a large number-average fiber diameter, was poor in adhesion to the mask and poor in redispersibility. Furthermore, Comparative Example 6, which used hydroxyethyl cellulose instead of component (C), was poor in adhesion, lack of adhesion to the mask, and redispersibility.

[0068] Example 19 Makeup base (Component) (%) 1. Oxidized polyethylene treatment (3.0%) Titanium oxide *10 0.5 2. Oxidized polyethylene treatment (3.0%) Red iron oxide *12 0.05 3. Oxidized polyethylene treatment (3.0%) Yellow iron oxide *13 0.05 4. Lecithin-treated (0.5%) talc 3.0 5. Zinc laurate treated mica 5.0 6. Sorbitan sesquioleate 0.3 7. (Meth)acrylic silicone graft copolymer of Production Example 2 0.2 8. 1,3-Butylene Glycol 10.0 9. Spherical cellulose powder *15 3.0 10. Glycerin 3.0 11. Ethanol 5.0 12. Cellulose nanofiber (number average fiber diameter 10 nm) *6 solid content 0.2 13. Calcium chloride 0.2 14. Ethylhexylglycerin 0.1 15.Fragrance 0.1 16. Remaining purified water *15: CELLULOBEADS D-30 (manufactured by Daito Kasei Kogyo Co., Ltd.)

[0069] (Manufacturing method) A: Components (1) to (8) are mixed and processed in a three-roll mill. B: Components (9) to (16) are mixed and dissolved uniformly. C: A was added to B, dispersed uniformly using a disperser, and filled into a PS container to obtain a water-based two-layer makeup base.

[0070] The aqueous two-layer makeup base of Example 19 was an aqueous two-layer makeup base that showed no color change during use, had excellent uniformity of makeup film, good adhesion, long-lasting makeup, little adhesion to masks, and excellent redispersibility, with the powder layer dispersing quickly and evenly when shaken.

[0071] Example 20 Blush (Component) (%) 1. Zinc laurate 6% treated sericite 5.0 2. Oxidized polyethylene treatment (3.0%) Red iron oxide *12 0.5 3. Oxidized polyethylene treatment (3.0%) Yellow iron oxide *13 0.5 4. Red No. 226 0.5 5. Red iron oxide coated mica titanium ※16 5.0 6. Polyoxyethylene (40E.O.) Hydrogenated castor oil (HLB 12.5) 0.3 7. (Meth)acrylic silicone graft copolymer of Production Example 2 0.2 8. 1,3-Butylene Glycol 15.0 9. Starch powder (※17) 3.0 11. Glycerin 3.0 12.Hydrophilic fume-like silicic anhydride *5 0.3 13. Cellulose nanofiber (number average fiber diameter 10 nm) *6 solid content 0.1 14. Calcium chloride 0.2 15. 1,2-octanediol 0.1 16.Fragrance 0.2 17. Remaining purified water *16: CLOISONNE CERISE FLAMBE 550Z (BASF, mica containing 48% red iron oxide) *17: DRY-FLO-PC (manufactured by Nouryon Japan)

[0072] (Manufacturing method) A: Components (1) to (8) are mixed and processed in a three-roll mill. B: Components (9) to (17) are mixed and dissolved uniformly. C: A was added to B, dispersed uniformly using a disperser, and filled into a PP container to obtain a water-based two-layer blusher.

[0073] The aqueous two-layer blusher of Example 20 was an aqueous two-layer blusher that showed no color change during use, had excellent uniformity of the cosmetic film, good adhesion, long-lasting makeup, little adhesion to the mask, and excellent redispersibility, with the powder layer dispersing quickly and evenly when shaken.

[0074] Example 21 Sunscreen (Component) (%) 1. Oxidized polyethylene treatment (3.0%) Titanium dioxide *10 5.0 2. Magnesium myristate treated barium sulfate 0.5 3. 5% fine zinc particles treated with stearic acid (average particle size 35 nm) 5.0 4. Methylphenylpolysiloxane *18 2.0 5. PEG-20 Glyceryl Isostearate 0.3 6. 0.2% of the (meth)acrylic silicone graft copolymer of Production Example 2 7. 1,3-Butylene Glycol 15.0 8. Phenylbenzimidazole sulfonic acid *19 3.0 9. Triethanolamine 3.0 10. Ethanol 5.0 11. Cellulose fiber (number average fiber diameter 100 nm) 5% water dispersion 10.0 12. Calcium chloride 0.2 13. Phenoxyethanol 0.1 14.Fragrance 0.1 15. Remaining purified water *18: KF-56 (Shin-Etsu Chemical Co., Ltd.) *19: EUSOLEX 232 (Merck)

[0075] (Manufacturing method) A: Components (1) to (7) are mixed and processed in a three-roll mill. B: Components (8) to (15) are mixed and dissolved uniformly. C: A was added to B, dispersed uniformly using a disperser, and filled into a glass container to obtain a water-based two-layer sunscreen.

[0076] The aqueous two-layer sunscreen of Example 21 was an aqueous two-layer sunscreen that showed no color change during use, had excellent uniformity of the cosmetic film, good adhesion, long-lasting cosmetic wear, little adhesion to masks, and excellent redispersibility, with the powder layer dispersing quickly and uniformly when shaken.

[0077] Example 22 Oil-in-water two-layer foundation (Component) (%) 1. Oxidized polyethylene treatment (3.0%) Titanium oxide *10 10.0 2. Oxidized polyethylene treatment (3.0%) Red iron oxide *12 0.2 3. Oxidized polyethylene treatment (3.0%) Yellow iron oxide *13 1.5 4. Dimethicone-treated 5% fine particle titanium dioxide (average particle size 35 nm) 5.0 5. Triceteth-4-phosphate 0.05 6. Lecithin 0.05 7. Dipropylene Glycol 5.0 8. Hydrogenated lecithin 0.5 9. Phytosterols 0.1 10. 1,3-butylene glycol 8.0 11. Glycerin 3.0 12. Ethylhexyl methoxycinnamate 2.0 13. Sorbitan Sesquioleate 0.1 14. Polysorbate 85 0.1 15. (Meth)acrylic silicone graft copolymer of Production Example 2 0.2 16. Phenylbenzimidazole sulfonic acid *19 3.0 17. Triethanolamine 2.0 18. Ethanol 5.0 19. Cellulose fiber (number average fiber diameter 100 nm) 5% water dispersion 10.0 20.Porous silica (average particle size 10μm, oil absorption 100ml / 100g) 1.0 21. Calcium chloride 0.2 22. Phenoxyethanol 0.05 23.Fragrance 0.1 24. Water-soluble collagen 0.01 25. Glycyrrhizic acid 2K 0.3 26. Vitamin B3 3.0 27. Rice fermentation liquid 10.0 28. Heparinoid 0.2 29. Remaining purified water

[0078] (Manufacturing method) A: Components (1) to (7) are mixed and processed in a three-roll mill. B: Components (8) to (14) are mixed and dissolved uniformly, and heated to 70°C. C: Heat ingredients (15) to (17) and a portion of ingredient (29) to 70°C, add to B, and emulsify using a disper. D: Components (18) to (28) and the remaining (29) were dispersed in A, and added to C at 50°C or below, mixed, and then filled into a glass container to obtain an oil-in-water two-layer foundation.

[0079] The oil-in-water two-layer foundation of Example 22 was a water-based two-layer sunscreen that showed no color change during use, had excellent uniformity of the makeup film, good adhesion, long-lasting makeup, little adhesion to masks, and excellent redispersibility, with the powder layer dispersing quickly and uniformly when shaken.

Claims

1. The following components (A) to (C): (A) Hydrophobized powder (B) A (meth)acrylic silicone graft copolymer obtained by reacting the following radical polymerizable monomers (a), (b), (c), and (d), in which (a) is 20 to 50% by mass, (b) is 0.5 to 4% by mass, and (c) + (d) is 46 to 79.5% by mass, based on the total amount of the radical polymerizable monomers (a), (b), (c), and (d): (C) Cellulose fibers having a number average fiber diameter of 2 to 150 nm A water-based two-layer cosmetic containing Ingredient (B): (a) a compound represented by the following general formula (I): 【Chemistry 1】 (wherein Me represents a methyl group, R1 represents a hydrogen atom or a methyl group, R2 represents a linear or branched divalent saturated hydrocarbon group having 1 to 10 carbon atoms which may contain one or two ether bonds, R3 represents a saturated hydrocarbon group having 1 to 10 carbon atoms, and m represents an integer of 5 to 100) (b) a compound represented by the following general formula (II): 【Chemistry 2】 (wherein R4 represents a hydrogen atom or a methyl group; R5, R6, and R7 may be the same or different and represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; X represents —O—, —NH—, or —O—CH ２ - or -O-CH ２ CH(OH)-, Y represents a linear or branched divalent saturated hydrocarbon group having 1 to 4 carbon atoms, and Z- represents a counter anion), and a compound represented by formula (III) 【Transformation 3】 (wherein R8 and R9 may be the same or different and each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R10 and R11 may be the same or different and each represent a hydrogen atom or an alkyl group having 1 to 18 carbon atoms; and Z- represents a counter anion.) 【Chemistry 4】 (wherein R12 represents a hydrogen atom or a methyl group, and R13 represents a hydrogen atom or a linear or branched alkyl group having 1 to 3 carbon atoms) (d) a compound represented by the following general formula (V): 【Transformation 5】 (wherein R14 represents a hydrogen atom or a methyl group, and R15 represents a hydroxyalkyl group having 1 to 4 carbon atoms).

2. 2. The aqueous two-layer cosmetic according to claim 1, wherein the component (A) is a powder that has been treated with one or more treatments selected from the group consisting of oxidized polyethylene treatment, metal soap treatment, phospholipid treatment, ceramide treatment, acylated amino acid treatment, higher fatty acid treatment, higher alcohol treatment, fatty acid ester treatment, wax treatment, and wax treatment.

3. 2. The aqueous two-layer cosmetic according to claim 1, wherein the component (A) is a powder that has been treated with a surface treatment agent having a fatty group having 14 to 24 carbon atoms.

4. 2. The aqueous two-layer cosmetic preparation according to claim 1, wherein the mass ratio of the components (A), (B), and (C) is (A) / [(B)+(C)]=1 to 80.

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