Oil-in-water cosmetics

The oil-in-water cosmetic composition, using specific polymers and silica, addresses the issues of powdery feel and stability, providing a uniform and effective skin correction with excellent spreadability.

JP7789576B2Active Publication Date: 2025-12-22KOSE CORPORATION
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Patent Information

Application Number
JP2022009688
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-01-27
Filing Date
2022-01-25
Publication Date
2025-12-22
Estimated Expiration
2042-01-25

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Abstract

To provide an oil-in-water type cosmetic that has no powdery feeling and excellent light spreadability while satisfying high fresh use feeling and skin correcting effect.SOLUTION: An oil-in-water type cosmetic contains: (A) amphiphilic water-soluble polymer which includes one or two or more kinds selected from acrylic acid alkyl and 2-acrylamide-2-methylpropanesulfonic acid in a part of a structure; (B) crosslinking type polyacrylic acid Na; (C) metal oxide having the average particle diameter of 0.1 μm to 2.0 μm and the refraction index of 2.0 or more; and (D) non-porous silica, where the content mass proportion (B) / (C) between the components (B) and (C) is 0.02 to 0.25.SELECTED DRAWING: None
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Description

[Technical Field]

[0001] The present invention relates to an oil-in-water cosmetic. [Background technology]

[0002] One of the desired features of cosmetics is that they are not sticky when applied and have a refreshing feel that does not burden the skin. Also, makeup cosmetics such as foundations and primers are required to have a high skin correction effect. Therefore, many technologies have been developed that achieve both a refreshing feel and a high skin correction effect.

[0003] Known examples of the above-mentioned techniques include a method of combining a specific powder with a crosslinked polymer (see, for example, Patent Document 1). Additionally, aqueous cosmetic compositions have been investigated that incorporate a specific hydrophobic powder into the aqueous phase, allowing for stable incorporation of a hydrophobic spherical powder into the aqueous phase while still providing an aqueous base with a fresh feel when used, thereby naturally correcting the appearance of the skin (see, for example, Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-32194 [Patent Document 2] WO2017 / 150519 Brochure Summary of the Invention [Problem to be solved by the invention]

[0005] However, for example, in the case of the technology of Patent Document 1, the product tends to feel powdery when used and the light spreadability tends to be impaired. On the other hand, for example, in the case of the technology of Patent Document 2, it is difficult to ensure the stability of the formulation, which limits the range of formulations that can be developed. Therefore, there is a strong demand for the development of cosmetics that have both a fresh feel when used and a high skin correcting effect, yet are free from a powdery feel and have excellent light spreadability. The present invention provides an oil-in-water cosmetic that has both a fresh feeling when used and a high skin correcting effect, and is free from powdery feeling and has excellent light spreadability. [Means for solving the problem]

[0006] In light of these circumstances, the present inventors have conducted extensive research to solve the above-mentioned problems, and as a result have discovered that by combining a specific water-soluble polymer with emulsifying ability, cross-linked sodium polyacrylate, a specific metal oxide, nonporous silica, and the like to form an oil-in-water cosmetic, it is possible to achieve a uniform cosmetic film and a high skin-correcting effect without impairing the fresh feeling of use, and also to achieve excellent light spreadability, thereby completing the present invention.

[0007] That is, the present invention is as follows. [1] The following components (A) to (D): (A) an amphiphilic water-soluble polymer containing one or more members selected from alkyl acrylate and acrylamido-2-methylpropanesulfonic acid as part of its structure; (B) Cross-linked sodium polyacrylate (C) a metal oxide having an average particle size of 0.1 μm to 2.0 μm and a refractive index of 2.0 or more (D) Nonporous silica The mass ratio of the components (B) and (C) is (B) / (C)=0.02 to 0.25. The oil-in-water cosmetic is [2] The oil-in-water cosmetic according to [1], wherein the component (A) is one or more selected from the group consisting of (acrylates / C10-30 alkyl acrylate) crosspolymer, (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, and (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer. [3] Further, as component (E), a kinematic viscosity at 25°C of 5 to 50 mm 2

[0023] The oil-in-water cosmetic according to [1] or [2], containing / s non-volatile silicone oil. [4] The oil-in-water cosmetic composition according to any one of [1] to [3] further contains a crosslinked organopolysiloxane polymer as component (F). [5] The oil-in-water cosmetic composition according to any one of [1] to [4] further contains a silicone surfactant as component (G). [6] The oil-in-water cosmetic according to any one of [1] to [5], wherein the average particle size of the component (B) when dried is 5 to 40 μm. [7] The oil-in-water cosmetic according to any one of [1] to [6], wherein the component (D) is one or more types selected from hollow powders and composite powders with powders having a refractive index higher than that of (D).

[0008] In addition, the present technology can further adopt the following configurations. [8] The oil-in-water cosmetic according to [7], wherein the component (D) is a composite particle having a refractive index of 1.43 or less or 1.60 or more. [9] The oil-in-water cosmetic according to any one of [1] to [8], wherein the component (C) is one or more selected from titanium oxide, iron oxide, and zinc oxide.

[10] The oil-in-water cosmetic according to any one of [1] to [9], wherein the component (C) is surface-treated with one or more of a fluorine compound, a phospholipid, an N-acylamino acid, polyethylene oxide, a metal soap, a fatty acid, a sphingolipid, a polysaccharide fatty acid ester, and silica.

[11] The oil-in-water cosmetic composition according to any one of [1] to

[10] further contains, as a cosmetic ingredient, one or more selected from vitamin B3, water-soluble vitamin C, tranexamic acid, and heparinoids. [Effects of the Invention]

[0009] The oil-in-water cosmetic composition of the present invention achieves uniformity of the cosmetic film and a high skin correction effect without impairing the fresh feeling of use, while also having excellent light spreadability and no powdery feeling.It can be used without feeling burden on the skin, and because it combines a comfortable feeling of use and a high skin correction effect, it is useful as an oil-in-water cosmetic composition that can be applied to bases, foundations, etc. DETAILED DESCRIPTION OF THE INVENTION

[0010] Preferred embodiments of the present invention will be described in detail. 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, percentages are expressed by mass unless otherwise specified. In this specification, when a numerical range is expressed using "to" (~), the range includes both ends. Furthermore, in the case of powders, the "average particle size" refers to the value (median diameter D50) obtained by observing the surface condition using a scanning electron microscope (JEOL, JSM-7800prime) and measuring with an image analyzer (Luzex AP, Nireco Corporation), and refers to the major axis of the particles. The refractive index is measured using an Abbe refractometer using the critical angle method, in which a sample (either liquid or solid) is sandwiched between two prisms (either directly or with contact liquid for solids) and the angle relative to the incident light is changed to determine the refractive index (refractive angle).

[0011] The amphiphilic water-soluble polymer (A) used in the present invention, partially containing one or more structures selected from alkyl acrylate and 2-acrylamido-2-methylpropanesulfonic acid, is a polymer or copolymer containing the structural units described above. An amphiphilic water-soluble polymer is an emulsion thickener that disperses and dissolves in water but also has a portion that is compatible with oil phase components, allowing it to emulsify oil phase components in water and impart viscosity. Any polymer that can be used in conventional cosmetics can be used. The alkyl in alkyl acrylate refers to alkyl esterification of some or all of the carboxyl groups. The number of carbon atoms in the alkyl-modified alkyl group is not limited, but is preferably 10 to 30, and more preferably 18 to 24. For example, an alkyl-modified carboxyvinyl polymer is an example of a polymer containing at least one acrylic acid ester or methacrylic acid ester as a constituent monomer. In addition, 2-acrylamido-2-methylpropanesulfonic acid has the same structure as acryloyldimethyltaurine and is preferably copolymerized with other monomers, and the monomers to be combined are not particularly limited.Specific examples include, but are not limited to, water-soluble polymers such as (acrylates / C10-30 alkyl acrylate) crosspolymer, (sodium acrylate / sodium acryloyldimethyltaurine) copolymer, and (ammonium acryloyldimethyltaurine / vinylpyrrolidone) copolymer, and one or more of these can be used. Commercially available products include Aristoflex AVC (manufactured by Clariant Japan), Aristoflex HMB (manufactured by Clariant Japan), PEMULEN TR-1 (manufactured by Lubrizol), PEMULEN TR-2 (manufactured by Lubrizol), CARBOPOL 1382 (manufactured by Lubrizol Advanced Materials), SIMULGEL EG QD (manufactured by Seppic), SIMULGEL FL (manufactured by Seppic), SIMULGEL NS (manufactured by Seppic), SEPIPLUS S (manufactured by Seppic), SEPINOV EMT 10 (manufactured by Seppic), SEPIPLUS 265 (manufactured by Seppic), and SEPIGEL 305 (manufactured by Seppic).Among these, (acrylates / C10-30 alkyl acrylate) crosspolymer, (sodium acrylate / sodium acryloyldimethyltaurate) copolymer, and (ammonium acryloyldimethyltaurate / vinylpyrrolidone) copolymer are preferred, with (acrylates / C10-30 alkyl acrylate) crosspolymer being more preferred in that it provides a fresh feel when used and forms a non-sticky film.

[0012] The content of component (A) used in the present invention is not particularly limited, but is preferably 0.1 to 0.4%, more preferably 0.15 to 0.3%, because this range allows for the production of an oil-in-water cosmetic that has sufficient emulsifying ability while also providing a fresh, non-sticky feel when used.

[0013] The crosslinked sodium polyacrylate (component (B)) used in the present invention is a copolymer obtained by polymerizing acrylic acid and sodium acrylate. For example, it can be produced by polymerizing acrylic acid mixed with sodium hydroxide in the presence of an initiator to form polyacrylic acid, and then forming a sodium salt of polyacrylic acid. Furthermore, component (B) preferably has a roughly spherical shape with an average dry particle size of 5 to 40 μm, which can provide a skin-correcting effect when the coating film on the skin dries. The average dry particle size of component (B) does not refer to the state in which it is dissolved or dispersed in water. Specifically, the average dry particle size of component (B) refers to the volume-based median diameter measured using a laser diffraction / scattering particle size analyzer (e.g., Microtrac MT-3000, manufactured by Nikkiso Co., Ltd.) in a state in which it is dried in n-heptane solvent. Furthermore, the average particle size of component (B) swollen in water becomes larger than that in the dry state. Although there are no particular restrictions on the size, it is preferably 500 μm or less. The average particle size when dried is preferably 5 to 40 μm, and more preferably 5 to 30 μm. This range is more preferable because it makes pores, wrinkles, and other irregularities less noticeable and provides a sufficient soft focus effect. The shape is not particularly limited, but a spherical shape is more preferable in terms of light spreadability. Examples of commercially available products include AQUPEC MG N-40R (manufactured by Sumitomo Seika Chemicals Co., Ltd.) (spherical) and Sunfresh ST-500MPSC (manufactured by Sanyo Chemical Industries, Ltd.).

[0014] The content of component (B) used in the present invention is not particularly limited, but is preferably 0.05 to 0.5%, more preferably 0.1 to 0.4%, and even more preferably 0.1 to 0.3%. This range is preferable because it allows for the production of an oil-in-water cosmetic that has a refreshing feel while also having a high skin correcting effect and excellent light spreadability.

[0015] Component (C) used in the present invention is a metal oxide having an average particle size of 0.1 μm to 2.0 μm and a refractive index of 2.0 or greater, and any metal oxide that can be used in ordinary cosmetics can be used. While not particularly limited, examples include zinc oxide, iron oxide, titanium oxide, zirconium oxide, cerium oxide, and chromium oxide, and one or more of these can be used. Among these, zinc oxide, titanium oxide, and iron oxide are more preferably used alone or in combination, from the viewpoint of excellent UV protection and pore and wrinkle coverage. Component (C) may be surface-treated. For example, surface treatment may be performed using one or more of fluorine compounds (e.g., perfluoroalkylalkoxysilanes), lecithin / hydrogenated phospholipids, N-acylamino acids (e.g., lauroyl lysine, sodium dilauramidoglutamide lysine, disodium stearoyl glutamate, sodium lauroyl aspartate), polyalkylene oxides (e.g., polyethylene oxide), silica, metal soaps, fatty acids, fatty acid esters / fatty acid amides, sphingolipids, polysaccharide fatty acid esters, surfactants, etc. Among these, the surface treatment preferably includes one or more silica or amphiphilic surface treatment agents. Silica is more preferred because it inhibits metal ion elution and has excellent dispersibility due to the influence of its isoelectric point. In the case of amphiphilic surface treatment agents, N-acylamino acids and / or salts thereof, phospholipids, and hydrogenated phospholipids are more preferred from the viewpoint of improving uniform adhesion to the skin, with phospholipids and hydrogenated phospholipids being even more preferred. These surface treatments are preferred in terms of dispersibility, uniformity of the cosmetic film, and skin correction effect.

[0016] The metal oxide of component (C) used in the present invention has an average particle size of 0.1 μm to 2 μm, more preferably 0.15 to 1.5 μm, and particularly preferably 0.2 to 1.0 μm, from the viewpoint of excellent covering power, etc. An average particle size within this range is preferable because it enhances the skin correction effect.

[0017] The content of component (C) used in the present invention is not particularly limited, but is preferably 1 to 10%, more preferably 1.5 to 8%, and even more preferably greater than 3.0% but not greater than 8%. This range is preferable because it allows for the production of an oil-in-water cosmetic that has an excellent skin-correcting effect without impairing the fresh feeling of use.

[0018] Combining components (B) and (C) used in the present invention in a specific ratio can improve the uniformity of the cosmetic film and achieve a higher skin correction effect. The mass ratio (B) / (C) of components (B) and (C) contained therein has a lower limit of 0.02 or more, preferably 0.05 or more. The upper limit is 0.25 or less, preferably 0.15 or less. If there is an extreme imbalance in the skin correction effects of components (B) and (C), this may hinder the skin correction effects of both components. Therefore, this range is preferable because it makes it easier to maintain a balance between the skin correction effect of component (B) and the skin correction effect of component (C), maintains the uniformity of the cosmetic film, does not adhere too strongly to the skin, and has excellent spreadability.

[0019] The nonporous silica used in the present invention as component (D) refers to a type of porous silica that is not typically used in cosmetics. It does not necessarily mean that the silica surface is completely free of pores. However, it is preferable that the silica does not have pores extending from the center to the surface within a radius of half the center. Preferably, the liquid absorption capacity measured by the method specified in JIS K5101 is less than 120 ml / 100 g. Porous silica, which tends to have a high liquid absorption capacity, absorbs moisture and oils in the cosmetic product, potentially reducing the fresh feel and lightness of spreadability, and may even cause a dry feeling. Therefore, careful consideration is required regarding the amount of porous silica used, but it is acceptable to use them in combination. It is more preferable that the content in the cosmetic product be greater by mass (% nonporous) than by mass (% porous).

[0020] The nonporous silica of component (D) used in the present invention preferably has an average particle size of 1 to 35 μm, more preferably 2 to 30 μm, and even more preferably 4 to 20 μm. Within this range, the coating does not sink into unevenness such as pores or wrinkles, does not feel dry, and provides a light diffusion effect, maintaining the uniformity of the coating film. The shape of component (D) is not particularly limited, but from the viewpoints of light diffusion effect and spreadability, it is preferable to use a spherical powder. Commercially available products include Sunsphere NP-30 (average particle size 4 μm, oil absorption 30±15 ml / 100 g), Sunsphere NP-100 (average particle size 10 μm, oil absorption 40±15 ml / 100 g) (refractive index 1.45-1.46) (manufactured by AGC Corporation), and Silica Microbeads N-1505 (average particle size 10 μm, oil absorption 25±2 ml / 100 g, refractive index 1.45-1.46) (manufactured by Nikki Catalysts and Chemicals Co., Ltd.). , silica microbeads BA-1 (average particle size 18 μm, oil absorption 70±40 ml / 100 g, refractive index 1.08 (hollow)) (manufactured by Nikki Catalysts and Chemicals Co., Ltd.), silica microbeads BA-4 (average particle size 4 μm, oil absorption 50 ml / 100 g, refractive index 1.29 (hollow)) (manufactured by Nikki Catalysts and Chemicals Co., Ltd.), SILNOS260 (average particle size 6 μm, oil absorption 80 ml / 100 g, refractive index 1.42 (hollow)) (manufactured by ABC NANOTECH), SILNOS290 (average particle size 9 μm, oil absorption 80 ml / 100 g, refractive index 1.42 (hollow)) (manufactured by ABC NANOTECH).

[0021] Component (D) used in the present invention is preferably hollow silica due to its light feel and excellent soft-focus effect. In other words, hollow silica composited with air is preferred. Hollow silica particles have a refractive index that varies depending on the ratio of air or vacuum (refractive index: approximately 1.0) to silica (refractive index: approximately 1.45). The refractive index varies depending on the ratio, and the air inside the particles is not replaced by the solution. In particular, the refractive index difference is easily generated upon contact with water (refractive index (20°C): 1.333) or oils used in cosmetics (e.g., refractive index: approximately 1.35 to 1.57), enhancing the visible light diffusion effect. In particular, the refractive index of component (D), such as hollow silica, is preferably 1.43 or less, more preferably 1.30 or less. This range is preferred because it maintains the soft-focus effect when the skin is wet with these solutions or when sebum or sweat is released over time. On the other hand, when component (D) is composited with a powder having a refractive index higher than that of silica, resulting in a composite powder with an overall refractive index of 1.6 or higher, the difference in refractive index from the solution is similarly large, thereby enhancing the visible light diffusion effect. For example, composites with materials having a refractive index higher than that of silica, such as barium sulfate (refractive index 1.64), zinc oxide (refractive index 1.95), iron oxide, and titanium oxide (refractive index 2.52 to 2.71), are also acceptable. The composite material is not particularly limited. However, the material composited with silica must account for less than 80% of the composite powder. There are no particular limitations as long as the outer or inner layer is nonporous silica. Specifically, those with titanium oxide or zinc oxide composited on the surface or inside are more preferred due to their excellent skin correction effect. Component (D) may be surface-treated, for example, with one or more of a fluorine compound, a silicone compound, a metal soap, lecithin, hydrogenated lecithin, silica, collagen, a hydrocarbon, a higher fatty acid, a higher alcohol, a fatty acid ester, a wax, a surfactant, and the like, but is not particularly limited thereto.

[0022] The content of component (D) used in the present invention is not particularly limited, but is preferably 0.3 to 5%, more preferably 0.5 to 3%. Within this range, an oil-in-water cosmetic product can be obtained that exhibits a skin-correcting effect without impairing the fresh feel and light spreadability.

[0023] The present invention further includes a component (E) having a kinematic viscosity at 25°C of 5 to 50 mm 2 A non-volatile silicone oil of 1 / s may also be used. Component (E) refers to a silicone oil agent that is not volatile at room temperature, and any silicone oil that can be used in ordinary cosmetics can be used. There are no particular limitations on the silicone oil, but examples include dimethylpolysiloxane and methylphenylpolysiloxane, and one or more of these can be used. Commercially available products include Silicone KF-96 (6CS) (kinematic viscosity 6 mm 2 / s, hereafter CS=mm 2 Examples of such products include (10CS), (20CS), (30CS), (50CS) (manufactured by Shin-Etsu Chemical Co., Ltd.), and KF-56 (manufactured by Shin-Etsu Chemical Co., Ltd.). Among these, products with a kinematic viscosity of 30 mm are preferred because they can spread easily and form a non-sticky film. 2 Non-volatile silicone oil with a kinematic viscosity of 20 mm / s or less is preferred. 2 Non-volatile silicone oils with a viscosity of 1 / s or less are more preferred.

[0024] The content of component (E) used in the present invention is not particularly limited, but is preferably 0.5 to 5%, more preferably 1 to 3%. This range is preferable because it allows for the production of an oil-in-water cosmetic that spreads lightly and feels smooth when used and forms a uniform cosmetic film.

[0025] The present invention may further include component (F), a crosslinked organopolysiloxane polymer. Component (F) is a polymer obtained by crosslinking organopolysiloxanes and having a partially three-dimensional crosslinked structure. Any polymer suitable for use in ordinary cosmetics may be used, without particular limitation. Examples include crosslinked methylpolysiloxanes such as (dimethicone / vinyldimethicone) crosspolymers, crosslinked methylphenylpolysiloxanes such as (dimethicone / phenyldimethicone) crosspolymers, and dimethicone crosspolymers. Polymers containing polyoxyalkylene groups in the molecule include crosslinked polyether-modified silicones such as (dimethicone / (PEG-10 / 15)) crosspolymers. Polymers containing long-chain alkyl groups in the molecule include crosslinked alkyl-modified silicones such as (vinyldimethicone / lauryldimethicone) crosspolymers. Polymers containing polyoxyalkylene groups and long-chain alkyl groups in the molecule include crosslinked alkyl-polyether co-modified silicones such as PEG-15 lauryl dimethicone crosspolymer. Polymers containing halogenated hydrocarbon groups in the molecule include crosslinked fluorine-modified silicones such as trifluoropropyl dimethicone / trifluoropropyldivinyl dimethicone crosspolymer. These may be used alone or in combination.

[0026] The crosslinked organopolysiloxane polymer of component (F) used in the present invention may be contained alone, but is often sold commercially as a mixture with an oil, and this commercially available form can also be used in the present invention. For example, KSG-15 (5% solids) is a mixture of crosslinked methylpolysiloxane and cyclic silicone; KSG-16 and KSG-16F (20-30% solids) are mixtures of crosslinked methylpolysiloxane and dimethylpolysiloxane; KSG-18 (10-20% solids) is a mixture of crosslinked methylphenylpolysiloxane and phenyltrimethicone; KSG-210 (20-30% solids) is a mixture of crosslinked polyether-modified silicone and dimethylpolysiloxane; and KSG-41 (25-35% solids), KSG-42 (20-30% solids), KSG-43 (25-35% solids), and KSG-44 (25-35% solids) are mixtures of crosslinked alkyl-modified silicone and oil. ), KSG-310 (solids 25-35%), KSG-320 (solids 20-30%), KSG-330 (solids 15-25%), KSG-340 (solids 25-35%), and KSG-340 (solids 25-35%) are mixtures of crosslinked alkyl-polyether co-modified silicone and oil; KSG-51 (solids 15-25%) is a mixture of cyclic fluorine-containing silicone such as fluoroalkyl group-containing cyclic organopolysiloxane; KSG-710 (solids 20-25%) is a mixture of crosslinked polyglycerin-modified silicone and dimethylpolysiloxane (all manufactured by Shin-Etsu Chemical Co., Ltd.); and DOWSIL 9040 SILICONE ELASTOMER BLEND (solids 12.6%), a mixture of dimethicone crosspolymer and cyclomethicone (manufactured by Dow Corning Toray Co., Ltd.). Among these, non-emulsifiable crosslinked organopolysiloxane polymers are preferred, and KSG-16F and KSG-19 (both manufactured by Shin-Etsu Chemical Co., Ltd.), which tend to form particulate lumps, are even more preferred. These components (F) are more preferred because they can enhance the skin correction effect.

[0027] The content of component (F) used in the present invention is not particularly limited, but is preferably 0.2 to 2%, more preferably 0.35 to 1.5%, because this range is preferable because it allows for the production of an oil-in-water cosmetic that has an enhanced skin correcting effect without impairing light spreadability.

[0028] The present invention may further include a silicone surfactant (component (G)). Component (G) is not particularly limited as long as it is an surfactant having a polysiloxane structure, and any surfactant can be used. Examples include polyoxyalkylene-modified silicones, polyoxyalkylene-alkyl co-modified silicones, polyglycerin-modified silicones, and / or polyglycerin-alkyl co-modified silicones, and silicone elastomers having polyether or polyglycerin in the side chains. These surfactants can be used singly or in combination. Among these silicone surfactants, those with an HLB value of 10 or higher, which can be emulsified in small amounts, are preferred because they provide a fresh, moist feeling. Specific examples include PEG-11 methyl ether dimethicone. Specific commercially available products include KF-6011 (PEG-11 methyl ether dimethicone, HLB 14.5) and KF-6043 (PEG-10 dimethicone, HLB 14.5) (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0029] The content of component (G) used in the present invention is not particularly limited, but the lower limit is preferably 0.1% or more, more preferably 0.3% or more, and the upper limit is preferably 2.3% or less, more preferably 2.1% or less, and even more preferably 2.0% or less. A content of component (G) within this range is more preferable in that it provides long-lasting makeup, prevents the makeup film from becoming sticky, and maintains a fresh feel when used.

[0030] The oil-in-water cosmetic of the present invention can contain components used in conventional cosmetics, as needed, within quantitative and qualitative ranges that do not impair the effects of the present invention. Examples of such components include water-soluble polymers other than components (A) and (B) that are used to form the oil-in-water cosmetic, powders other than components (C) and (D), oil-based components other than components (E) and (F), aqueous components, surfactants other than (G), oil-soluble UV absorbers, water-soluble UV absorbers, moisturizers, antioxidants, cosmetic ingredients, preservatives, fragrances, and refreshing agents.

[0031] The aqueous component constitutes the external aqueous phase of the oil-in-water cosmetic and may be any component other than water that is soluble in water, such as alcohols such as ethyl alcohol and isopropyl alcohol, glycols such as propylene glycol, 1,3-butylene glycol, dipropylene glycol, and polyethylene glycol, glycerols such as glycerin, diglycerin, and polyglycerin, and plant extracts such as aloe vera, witch hazel, hamamelis, cucumber, lemon, lavender, and rose. From the standpoints of usability and stability, the content of the aqueous phase is preferably 40 to 80% of the total cosmetic.

[0032] Oily components constitute the internal oil phase of oil-in-water cosmetics, and are generally used in cosmetics other than components (E) and (F), and include hydrocarbons, oils and fats, waxes, hydrogenated oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorine-based oils, lanolin derivatives, oily gelling agents, etc., regardless of their nature, such as solid oils, semi-solid oils, liquid oils, or volatile oils of animal, vegetable, or synthetic origin. Specific examples of such additives include hydrocarbons such as liquid paraffin, squalane, petrolatum, polyisobutylene, and polybutene; fats and oils such as Japan wax, olive oil, castor oil, mink oil, and macadamia nut oil; waxes such as beeswax and seaweed; esters such as rosin acid pentaerythritol ester, cholesterol fatty acid ester, and phytosterol fatty acid ester; fatty acids such as stearic acid, lauric acid, myristic acid, behenic acid, isostearic acid, and oleic acid; higher alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, and behenyl alcohol; dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, trimethylenediaminetetraacetic acid, and the like. Examples of suitable oil phases include silicones such as ethylsiloxysilicate, highly polymerized methylphenylpolysiloxane, methacryl-modified organopolysiloxane, stearyl-modified organopolysiloxane, oleyl-modified organopolysiloxane, behenyl-modified organopolysiloxane, highly polymerized dimethylpolysiloxane, alkoxy-modified organopolysiloxane, and fluorine-modified organopolysiloxane; fluorine-based oils such as perfluorodecane, perfluorooctane, and perfluoropolyether; lanolin derivatives such as lanolin, lanolin acetate, lanolin fatty acid isopropyl, and lanolin alcohol; and oily gelling agents such as sucrose fatty acid esters, starch fatty acid esters, aluminum isostearate, and 12-hydroxystearic acid. These may be used alone or in combination. From the standpoints of usability and stability, the content of the oil phase is preferably 5 to 20% of the total cosmetic composition.

[0033] In addition to component (G), surfactants include nonionic surfactants, anionic surfactants, cationic surfactants, etc. Examples of nonionic surfactants include polyoxyethylene fatty acid esters, glycerin fatty acid esters, sorbitan fatty acid esters, polyglycerin fatty acid esters, sucrose fatty acid esters, alkyl polyglucosides, N-alkyldimethylamine oxide polyoxyethylene glycerin fatty acid esters, polyoxyethylene cholesteryl ethers, polyoxyethylene phytosteryl ethers, polyoxyethylene alkyl ethers, polyoxyethylene polyoxypropylene alkyl ethers, and polyoxyethylene alkylphenyl ethers. From the viewpoints of usability and stability, the content of surfactants is preferably 1 to 5% of the total cosmetic composition.

[0034] The cosmetic ingredients are not particularly limited, but may include, for example, vitamin A, vitamin B3, vitamin C, tranexamic acid, heparinoids, panthenol, astaxanthin, etc. These ingredients are preferred for their incorporation because they achieve uniformity of the cosmetic film and a high skin-correcting effect without impairing the fresh feeling of use, while also providing excellent light spreadability and allowing the cosmetic effects of these materials to be applied uniformly and stably over time to the skin.

[0035] The method for producing the oil-in-water cosmetic of the present invention is not particularly limited and can be produced by a commonly known method, and any dispersing / emulsifying device such as a general dispersion device may be used as the production device. For example, the oil-in-water cosmetic can be obtained by dissolving the aqueous component containing components (A) and (B) by heating as necessary, emulsifying and mixing the oil-based component containing components (E), (F), and (G) into the aqueous phase using a dispersion, and then adding and dispersing components (C) and (D).

[0036] The form of the oil-in-water cosmetic of the present invention is not particularly limited, and examples thereof include liquid, emulsion, cream, solid, and the like.

[0037] The oil-in-water cosmetic of the present invention can be suitably used in emulsions, serums, packs, creams, sunscreens, foundations, makeup bases, lip cosmetics, eye makeup cosmetics, etc., and is preferably used in sunscreens, daytime emulsions, makeup bases, foundations, unevenness correction cosmetics, etc., because it has a high skin correction effect. [Example]

[0038] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. [Examples 1 to 28 and Comparative Examples 1 to 9: Base Cosmetics] Base cosmetics were prepared using the compositions shown in Tables 1 to 3 and the manufacturing method described below. The obtained base cosmetics were evaluated for fresh feel when used, uniformity of the cosmetic film, skin correcting effect, and light spreadability using the evaluation methods and criteria described below, and the results are also shown in the tables.

[0039] [Table 1] *1: PEMULEN TR-1 (manufactured by Lubrizol) *2: SIMULGEL EG QD (water-soluble polymer purity 37.5%, manufactured by SEPPIC) *3: Aristoflex AVC (Clariant Japan) *5: AQUPEC MG N40R (manufactured by Sumitomo Seika Chemicals) *6: Sunfresh ST-500MPSC (manufactured by Sanyo Chemical Industries, Ltd.) *7: CARBOPOL 980 (manufactured by Lubrizol) *8: Surface treatment of XZ-100F (manufactured by Sakai Chemical Industry Co., Ltd.) *9: NAI-Titanium CR-50 (100%) (manufactured by Miyoshi Chemicals Co., Ltd.) *10: Surface treatment of base material MP-1133 (manufactured by Teika Co., Ltd.) *11: Surface treatment of base MP-100 (manufactured by Teika Co., Ltd.) *12: MT-500SA (manufactured by Teika Co., Ltd.) 5% stearic acid treatment *13: Surface treated R516P (manufactured by Titanium Industries Co., Ltd.) *14: Surface treatment of YP1200P (manufactured by Titanium Industries Co., Ltd.) *15: BL-100P (manufactured by Titanium Industries Co., Ltd.) surface treated *17: SILICA MICROBEAD BA-1 (manufactured by JGC Catalysts and Chemicals) *21: KF-6011 (Shin-Etsu Chemical Co., Ltd.)

[0040] [Table 2] *16: Sunsphere NP-100 (AGS) *18: God Ball E2-824C (manufactured by Suzuki Oil Industries Co., Ltd.) *19: KF-56 (Shin-Etsu Chemical Co., Ltd.) *20: KSG-016F (solvent: dimethicone 75%, manufactured by Shin-Etsu Chemical Co., Ltd.)

[0041] [Table 3] *4: SALCARE SC81UP (Water-soluble polymer pure content 30%, manufactured by BASF)

[0042] (Manufacturing method: Tables 1 to 3 (ingredients not listed in the table are not included)) A: Components (8) to (20) are dispersed in a three-roll mill. B: Mix and dissolve components (1) to (7) and (31) to (38) uniformly. C: Mix and dissolve ingredients (24) to (30) uniformly. D: Add C to B and emulsify at room temperature. E: D was mixed with A and components (21) to (23) to obtain an oil-in-water cosmetic. F: Filled into a tube to obtain a base cosmetic.

[0043] (Evaluation method) A panel of 10 cosmetic evaluation experts applied the oil-in-water cosmetics of the Examples and Comparative Examples, and rated them on a 5-point scale according to the following evaluation criteria for "A. Fresh feel when used," "B. Uniformity of cosmetic film," "C. Skin correcting effect," and "D. Light spreadability," and gave them scores. Items A and D were evaluated during use, while items B and C were evaluated on the finished film immediately after use. C. Skin correcting effect refers to the effect of correcting uneven skin tone and irregularities, making the skin look beautiful. The scores of all the panels were then averaged and judged according to the following criteria.

[0044] [Evaluation criteria] B. Refreshing feeling when used [Score]:[Evaluation result] 4 points: Feels very fresh 3 points: Feels slightly fresh 2 points: normal 1 point: Not very fresh 0 points: Not fresh B. Uniformity of cosmetic film [Score]:[Evaluation result] 4 points: No unevenness in the powder is observed. 3 points: No unevenness in the powder is observed. 2 points: There is some powder present, but no unevenness is observed. 1 point: Uneven powder distribution is observed. 0 points: Severely uneven powder C. Skin correction effect [Score]:[Evaluation result] 4 points: High coverage and correction effect. 3 points: A moderately high coverage effect is felt. 2 points: Cover correction effect is noticeable. 1 point: The cover correction effect is not very noticeable. 0 points: No cover correction effect at all. D. Light stretch [Score]:[Evaluation result] 4 points: Very light and easy to spread. 3 points: Lightly spreadable. 2 points: Slightly light spread. 1 point: Not very stretchy. 0 points: Not easy to spread at all. [Judgment criteria] [Average score]: [Judgment] 3.5 or above: ◎ 2.5 or more and less than 3.5: ○ 1.5 or more to less than 2.5: △ Less than 1.5: ×

[0045] As is clear from the results in the table, the oil-in-water cosmetics of Examples 1 to 28 were excellent in all aspects, including a fresh feel when used, uniformity of the cosmetic film, skin-correcting effect, and light spreadability. In contrast, Comparative Example 1, in which a water-soluble polymer without emulsifying ability was used instead of component (A), failed to maintain the light spreadability, fresh feel when used, and uniformity of the cosmetic film. Comparative Example 2, in which the mass ratios of components (B) and (C) were less than 0.02, resulted in poor uniformity of the cosmetic film. On the other hand, Comparative Example 3, in which the mass ratios of components (B) and (C) were greater than 0.25, resulted in impaired uniformity of the cosmetic film and light spreadability. Comparative Example 4, which did not contain component (B), resulted in a significant impairment of the uniformity of the cosmetic film and skin-correcting effect. Comparative Example 5, which did not contain component (B) and had a different particle size and shape, resulted in impaired light spreadability, fresh feel when used, uniformity of the cosmetic film, and skin-correcting effect. In Comparative Example 6, in which the amount of component (C) was small and the (B) / (C) ratio was off, and Comparative Example 7, which did not contain component (C), the uniformity of the cosmetic film and the skin correction effect were significantly impaired. Comparative Example 8, which did not contain component (D), was inferior in the fresh feel of use, the uniformity of the cosmetic film, and the skin correction effect. Comparative Example 9, which contained a different porous component (D), resulted in a significant impairment of the fresh feel of use and light spreadability.

[0046] (Example 29) Liquid foundation (Component) (%) 1. PEG-10 hydrogenated castor oil 0.3 2. Sorbitan sesquioleate 0.7 3. Silica-treated red iron oxide*22 5 4. Silica-treated yellow iron oxide*23 5 5. Silica-treated black iron oxide*24 3 6. Hydrogenated lecithin-treated sericite 4 7. Ceramide-treated titanium dioxide*25 10 8. Talc 2 9. Hydrogenated lecithin 1.5 10. Behenyl alcohol 0.5 11. 1,3-Butylene Glycol 15 12. Remaining purified water 13. Diphenylsiloxyphenyl Trimethicone*19 1 14. PEG-10 Dimethicone 0.2 15. Ethylhexyl methoxycinnamate 7 16.2-{4-(diethylamino)-2-hydroxybenzoyl} Hexyl benzoate 2 17. Dimethicone (6mm 2 / s) 3 18. Methyl Trimethicone 2 19. Isododecane 1 20. (Dimethicone / vinyl dimethicone) crosspolymer / Cyclomethicone*26 5 21. Xanthan gum 0.02 22. (Acrylic / C10-30 alkyl acrylate) copolymer*1 0.2 23. Dipropylene Glycol 2 24. Carbomer Na*5 0.5 25. Silica*27 3 26. Dipropylene Glycol 2 27. Triethanolamine 0.6 28. Heparinoid 0.1 *22: Sympholite RW-TE (Nikki Catalysts and Chemicals, 10% silica) *23: Sympholite YW-TE (Nikki Catalysts and Chemicals, 10% silica) *24: Sympholite BW-TE (Nikki Catalysts and Chemicals, 10% silica) *25: TiO2 MP-1133 (manufactured by Teika Co., Ltd.) Ceramide NG, (palmitic acid / ethylhexanoic acid) dextrin treatment (surface treatment 3.0%) *26: KSG-15 (Shin-Etsu Chemical Co., Ltd.) *27: SILNOS260 (average particle size 6μm, oil absorption 80ml / 100g, refractive index 1.42 (hollow)) (manufactured by ABC NANOTECH)

[0047] (Manufacturing method) A: Mix ingredients 1 to 8 evenly with a three-roller mixer. B: Heat ingredients 9 to 12 to 75°C and dissolve uniformly. C: Heat ingredients 13 to 20 to 75°C and mix evenly. D: Heat B and C to 75°C and emulsify. E: Cool D to 50°C. F: Add ingredients 21 to 28 to F and mix evenly. G: G is cooled to 35°C and filled into a container to obtain a liquid foundation. Example 29 provided excellent results in all areas: fresh feel, uniformity of the cosmetic film, skin correction effect, and light spreadability. It also provided UV protection. (B) / (C) = 0.5 / (5 + 5 + 3 + 10) = 0.022.

[0048] (Example 30) Base (Component) (%) 1.1,3-butylene glycol 10 2. Glycerin 5 3. Triceteareth-4 phosphate 0.1 4. Polysorbate-80 1 5. Sodium lauroyl glutamate treated titanium dioxide*28 4 6. Red iron oxide treated with 2Na stearoyl glutamate*29 0.1 7. Yellow iron oxide treated with 2Na stearoyl glutamate*30 0.1 8. Black iron oxide treated with 2Na stearoyl glutamate*31 0.1 9. Triethanolamine 0.9 10. Remaining purified water 11. Stearic Acid 1 12. Cetostearyl alcohol 0.3 13. Sorbitan Sesquioleate 0.3 14. Dimethicone (dynamic viscosity 10mm 2 / s) 2 15. Ethylhexyl methoxycinnamate 5 16. Neopentyl glycol dicaprate 1 17. 2,4-Bis[{4-(2-ethylhexyloxy)-2-hydroxy} -phenyl]-6-(4-methoxyphenyl)-(1,3,5) -Triazine 0.5 18. 2-2'-methylenebis{6-(benzotriazol-2-yl) -4-(1,1,3,3,-tetramethylbutyl)phenol} 3 19. (Dimethicone / Vinyl Dimethicone) Crosspolymer / Dimethicone*32 2 20. Carboxyvinyl polymer 0.15 21. Xanthan gum 0.03 22. Acrylates copolymer*4 0.1 23. Sodium acrylate crosspolymer*6 0.3 24. Ascorbic acid 2-glucoside 0.3 25.Fragrance (appropriate amount) 26. (Acrylates / C10-30 alkyl acrylate) crosspolymer*1 0.2 27. Cellulose*33 1 28. Hollow Silica*34 0.7 29. Titanium oxide coated mica*35 1 30. Phenoxyethanol 0.1 31. Ethylhexyl methoxycinnamate capsules*36 4 *28:ASL-1 TiO2 MP-1133 (manufactured by Daito Chemical Industry Co., Ltd.) *29: NAI-Red R-516PS (100%) (Miyoshi Chemicals Co., Ltd.) *30: NAI Yellow LL-100P (100%) (manufactured by Miyoshi Kasei) *31: NAI-Black BL-100P (100%) (Miyoshi Kasei Co., Ltd.) *32: KSG-16 (Shin-Etsu Chemical Co., Ltd.) *33: CELLULOBEADS S-10 (manufactured by Daito Kasei Kogyo Co., Ltd.) *34: SILICA MICROBEAD BA-4 (manufactured by JGC Catalysts and Chemicals) *35: COSMETICA SUPER RED N-5401S (manufactured by CQV) *36: SILASOMA MF(S) (manufactured by Seiwa Kasei Co., Ltd.)

[0049] (Manufacturing method) A: Mix ingredients 1 to 8 evenly with a three-roller mixer. B: Mix ingredients 9 and 10 evenly. C: Components 11 to 19 are uniformly dispersed at 75°C. D: Add C to B and emulsify at 75°C. E: Cool D to 60°C. F: Add ingredients 20 to 31 to E and mix evenly. G: Cool F to 40°C. H: Add A to G and mix evenly. After filling the container with I:H, the base is obtained. Example 30 provided excellent results in all areas: fresh feel, uniformity of the cosmetic film, skin correction effect, and light spreadability. It also provided UV protection. (B) / (C) = 0.3 / (4 + 0.1 + 0.1 + 0.1) = 0.070.

[0050] (Example 31) BB Cream (Component) (%) 1. PEG-10 Hydrogenated Castor Oil 0.05 2. Sorbitan sesquioleate 0.03 3.1,3-butylene glycol 0.5 4. Titanium dioxide treated with oxidized polyethylene*37 6 5. Hydrogenated lecithin-treated talc 0.2 6. Red iron oxide (R-516-P: Titanium Industries Co., Ltd.) 0.3 7. Yellow iron oxide (LL-100P: Titanium Industries Co., Ltd.) 0.3 8. Black iron oxide (BL-100P: Titanium Kogyo Co., Ltd.) 0.3 9. Remaining purified water 10. Dipropylene Glycol 9 11. Triethanolamine 0.35 12. Stearic Acid 1 13. Behenyl Alcohol 1 14. Dimethicone (dynamic viscosity 6mm) 2 / s) 1 15. Liquid Paraffin 1 16. Isotridecyl isononanoate 4 17. Decamethylcyclopentasiloxane 3 18. Neopentyl glycol di-2-ethylhexanoate 1 19. Silicone-treated titanium dioxide microparticles*38 3 20. PEG-9 Dimethicone*39 0.4 21. 2-Ethylhexyl para-methoxycinnamate 5 22. 2-{4-(diethylamino)-2-hydroxybenzoyl} Hexyl benzoate 1 23. (Dimethicone / phenyl dimethicone / ) crosspolymer / Diphenylsiloxyphenyl trimethicone*40 3 24. Carboxyvinyl polymer 0.3 25. Ammonium acryloyldimethyltaurate / vinylpyrrolidone copolymer 0.7 26. Carbomer Na*5 0.5 27. 40% of the surface of silica*16 is coated with 150nm fine titanium dioxide particles (Refractive index 1.96) 3 28. Niacinamide 1 29.Fragrance (appropriate amount) *37:PI-TR-8 (Miyoshi Chemicals Co., Ltd.) *38: SMT-500SAM (manufactured by Teika) *39: KF-6019 (Shin-Etsu Chemical Co., Ltd.) *40: KSG-18 (Shin-Etsu Chemical Co., Ltd.)

[0051] (Manufacturing method) A: Mix ingredients 1 to 8 evenly with a three-roller mixer. B: Dissolve ingredients 9 to 11 uniformly. C: Components 12 to 23 are uniformly dispersed at 75°C. D: Add C to B and emulsify at 75°C. E: Cool D to 50°C. F: Add ingredients 24 to 29 to E and mix evenly. G: Add A to F and mix evenly. H: After filling G into a container, a BB cream is obtained. Example 31 provided excellent results in all areas: fresh feel, uniformity of the cosmetic film, skin correction effect, and light spreadability. It also provided UV protection. (B) / (C) = 0.5 / (6 + 0.3 + 0.3 + 0.3) = 0.072.

[0052] Example 32: Sunscreen cosmetics (Component) (%) 1. Triceteareth-4 phosphate 0.05 2. PEG-30 Phytosterol 0.2 3.1,3-Butylene Glycol 12 4. NAI-treated titanium dioxide*9 2 5. Methylparaben 0.1 6. Tranexamic acid 2 7. Sodium lactate 1.5 8. Niacinamide 3 9. (Sodium acrylate / sodium acryloyldimethyltaurate) Copolymer*2 1 10. Remaining purified water 11. Glycerin 5 12. Carbomer Na*5 0.3 13. 50% zinc oxide coating of 35 nm fine particles on the surface of silica*27 (Refractive index 1.69) 4 14. Isopropyl triisostearoyl titanate-treated low-temperature calcined zinc oxide*41 10 15. (Dimethicone / (PEG-10 / 15)) Crosspolymer / Dimethicone*42 4 16. (Vinyl dimethicone / methicone silsesquioxane) crosspolymer*43 1 17. Polyhydroxystearic acid 0.5 18. Dimethicone diethyl benzalmalonate 2 19. 2-Ethylhexyl para-methoxycinnamate 7 20. 2,4-Bis{[4-(2-ethyl-hexyloxy)-2-hydroxy] -phenyl}-6-(4-methoxyphenyl)-(1,3,5) -Triazine 1 21. Dimethicone (dynamic viscosity 10mm 2 / s) 2.5 22. Glyceryl tri-2-ethylhexanoate 6 23. Cetostearyl alcohol 1.5 24. Behenyl alcohol 0.5 *41:ITT-5 MZ-500 (manufactured by Daito Kasei Kogyo Co., Ltd.) *42: KSG-210 (Shin-Etsu Chemical Co., Ltd.) *43: KSP-100 (Shin-Etsu Chemical Co., Ltd.)

[0053] (Manufacturing method) A: Mix ingredients 1 to 4 evenly with a three-roller mixer. B: Dissolve ingredients 5 to 13 uniformly. C: Components 14 to 24 are uniformly dispersed at 75°C. D: Add C to B and emulsify at 75°C. E: Cool D to 40°C. F: Add A to E and mix evenly. G: After filling F into a container, a sunscreen cosmetic is obtained. The sunscreen cosmetic of Example 32 provided excellent results in all areas, including a fresh feel when used, uniformity of the cosmetic film, skin correction effect, and light spreadability. It also provided UV protection. The (B) / (C) ratio was 0.3 / 2=0.15.

[0054] Example 33: Daytime serum (Component) (%) 1. Polyoxyethylene sorbitan monooleate (20E.O.) 0.1 2.1,3-Butylene Glycol 12 3. (Acrylic / C10-30 alkyl acrylate) copolymer*1 0.3 4. Methylparaben 0.1 5. Remaining purified water 6. Ethanol 6 7. Carbomer Na*5 0.1 8. Silica*44 4 9. Silica*45 1 10. Polyhydroxystearic acid 0.5 11. Dimethicone diethyl benzalmalonate 4 12. Lecithin-treated titanium dioxide (average particle size 0.25 μm) 0.5 13. (Dimethicone / Vinyl Dimethicone) Crosspolymer / Dimethicone*20 1.5 14. Triethylhexanoin 7.5 15. Dimethicone (dynamic viscosity 6mm) 2 / s) 2.5 16. Decamethylcyclopentasiloxane 3 17. Cetyl 2-ethylhexanoate 4 18. Propylene glycol dicaprate 2 19. Tocopheryl acetate 0.01 20. Ceramide 2 0.005 21. Ceramide 3 0.005 *44: God Ball G6C (average particle size 4 μm, oil absorption 30 ml / 100 g) (manufactured by Suzuki Oil Industries Co., Ltd.) *45: CHIFFONSIL-5T (average particle size 5 μm, refractive index 1.65, non-porous silica, titanium oxide 250 nm 30% content) (manufactured by JGC Catalysts and Chemicals)

[0055] (Manufacturing method) A: Components 1 to 7 are uniformly dispersed at 75°C. B: Mix ingredients 8 to 12 evenly with a three-roller mill. C: Components 13 to 21 are dispersed uniformly at 75°C. D: Add C to A and emulsify at 75°C. E: Cool D to 40°C. F: Add C to E and mix evenly. G:F is filled into a container to obtain a daytime beauty serum. The daytime serum of Example 33 provided excellent results in all areas: fresh feel, uniformity of the cosmetic film, skin correction effect, and light spreadability. Note that (B) / (C) = 0.1 / 0.5 = 0.2.

Claims

1. The following components (A) to (D): (A) An amphiphilic water-soluble polymer containing, as part of its structure, one or more members selected from alkyl acrylate and 2-acrylamido-2-methylpropanesulfonic acid. (B) Crosslinked sodium polyacrylate (C) Metal oxide having an average particle size of 0.1 μm to 2.0 μm and a refractive index of 2.0 or more (D) Nonporous silica The mass ratio of the components (B) and (C) is (B) / (C)=0.02 to 0.

25. The oil-in-water cosmetic is

2. 2. The oil-in-water cosmetic according to claim 1, wherein the component (A) is one or more selected from the group consisting of acrylates / C10-30 alkyl acrylate crosspolymer, sodium acrylate / sodium acryloyldimethyltaurate copolymer, and ammonium acryloyldimethyltaurate / vinylpyrrolidone copolymer.

3. Further, as component (E), a kinematic viscosity at 25°C of 5 to 50 mm 2 3. The oil-in-water cosmetic according to claim 1, further comprising a non-volatile silicone oil.

4. The oil-in-water cosmetic according to any one of claims 1 to 3, further comprising a crosslinked organopolysiloxane polymer as component (F).

5. The oil-in-water cosmetic preparation according to any one of claims 1 to 4, further comprising a silicone surfactant as component (G).

6. The oil-in-water cosmetic according to any one of claims 1 to 5, wherein the average particle size of component (B) when dried is 5 to 40 µm.

7. The oil-in-water cosmetic according to any one of claims 1 to 6, wherein the component (D) is one or more types selected from hollow powders and composite powders with powders having a refractive index higher than that of (D).

Citation Information

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