Oil-in-water emulsion cosmetics

Abstract

An object of the present invention is to provide an oil-in-water emulsion cosmetic that is highly stable against temperature changes. The oil-in-water emulsion cosmetic that solves the problems of the present invention is characterized by containing the following components (A) to (E): (A) one or more selected from the group consisting of copolymers of (meth)acrylic acid or (meth)acrylic acid alkyl esters and (meth)acrylic acid (polyoxyethylene monoalkyl ether), and copolymers containing acryloyldimethyltaurine as a structural unit or salts thereof; (B) branched chain polysaccharides; (C) one or more liquid oils at 25°C selected from the group consisting of ester oils, hydrocarbon oils, and higher alcohols; (D) 7% by mass to 25% by mass of a hydrophobic treated metal oxide; and (E) one or more selected from the group consisting of an acrylic-silicone graft copolymer, polyhydroxystearic acid, and polyglycerin-alkyl-co-modified silicone.

Description

[Technical Field]

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

[0002] Oil-in-water emulsion cosmetics have an excellent feel when used, such as a high level of moisture and a fresh, moist feel, and are therefore widely used in sunscreen cosmetics, etc. Sunscreen cosmetics contain a variety of ultraviolet absorbers and ultraviolet scattering agents to enhance the ultraviolet protection effect, but the incorporation of these ingredients can impair the feel when used as an oil-in-water emulsion cosmetic; for example, oil-in-water emulsion cosmetics that use oil-soluble ultraviolet absorbers can cause problems such as stickiness after application and reduced stability.

[0003] In response to this, Patent Document 1 describes that in an oil-in-water emulsion cosmetic that uses an oil-soluble UV absorber, stickiness can be reduced and stability can be improved by blending a polar oil with a melting point of 30°C or higher and 45°C or lower with a higher alcohol or higher fatty acid that is solid at 25°C.

[0004] However, it has been recognized that the oil-in-water emulsion cosmetic described in Patent Document 1 may have problems with stability against temperature changes, such as a decrease in viscosity under high temperature conditions and gelation under low temperature conditions.

[0005] Meanwhile, the present applicant has disclosed an oil-in-water emulsion cosmetic that exhibits excellent emulsion stability over time at high temperatures, even when a high concentration of zinc oxide is blended as an UV scattering agent together with a solid oil-soluble UV absorber, by using an (Acrylates / Beheneth Methacrylate) copolymer and polyhydroxystearic acid (Patent Document 2), and this oil-in-water emulsion cosmetic exhibits suppressed viscosity changes at high temperatures. However, for example, there is no focus on preventing poor discharge due to an increase in viscosity at low temperatures in a dispenser container with high viscosity, and there is a demand for greater stability against temperature changes at both high and low temperatures, such as preventing dripping and reduced dischargeability due to temperature changes, even when the cosmetic is packaged in a tube container at high viscosity. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-199443 [Patent Document 2] Japanese Patent Publication No. 2021-161049 Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the present invention is to provide an oil-in-water emulsion cosmetic that is highly stable against temperature changes. [Means for solving the problem]

[0008] As a result of extensive research into solving the above problems, the present inventors have discovered that by using a specific acrylic polymer and a polysaccharide polymer having a branched structure in combination with a specific liquid oil, a hydrophobized metal oxide, and a dispersant, it is possible to obtain an oil-in-water emulsion cosmetic that is excellent in stability against temperature changes and that suppresses viscosity changes at high and low temperatures, thereby completing the present invention.

[0009] The means for solving the above problems include the following aspects. <1> The following components (A) to (E): (A) One or more selected from the group consisting of a copolymer of (meth)acrylic acid or a (meth)acrylic acid alkyl ester and (meth)acrylic acid (polyoxyethylene monoalkyl ether), and a copolymer containing acryloyldimethyltaurine as a constituent unit or a salt thereof. (B) Branched polysaccharides (C) One or more liquid oils at 25°C selected from the group consisting of ester oils, hydrocarbon oils, and higher alcohols (D) Hydrophobized metal oxide: 7% by mass or more and 25% by mass or less (E) One or more selected from the group consisting of acrylic-silicone graft copolymer, polyhydroxystearic acid, and polyglycerin-alkyl-co-modified silicone The oil-in-water emulsion cosmetic contains <2> The mass ratio of component (E) to component (D) (component (E) / component (D)) is 0.005 to 0.25. <1> The oil-in-water emulsion cosmetic composition according to claim 1. <3> The viscosity ratio of the oil-in-water emulsion cosmetic's viscosity (mPa·s) at 5°C to its viscosity (mPa·s) at 40°C (viscosity at 5°C / viscosity at 40°C) is 0.5 to 7.0. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <4> The mass ratio of the content of component (D) to the total content of components (A) and (B) (component (D) / (component (A)+component (B))) is 10 to 85. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <5> Component (B) is a polysaccharide having mannose and / or glucuronic acid as a constituent unit. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <6> The ester oil of component (C) is one or more selected from the group consisting of alkyl benzoate (C12-C15), diisopropyl sebacate, and cetyl 2-ethylhexanoate. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <7> The hydrocarbon oil of component (C) contains a volatile hydrocarbon oil. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <8> The hydrophobic treatment of component (D) is one or more treatments selected from the group consisting of silicone treatment, alkylalkoxysilane treatment, amino acid treatment, acylated amino acid treatment, fatty acid treatment, fatty acid ester treatment, and phospholipid treatment. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <9> Contains two or more types of hydrophobic treatment of component (D) combined with the same metal oxide. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <10> Component (D) contains two or more hydrophobic treated metal oxides with different hydrophobic treatments. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <11> The component (D) contains (D-1) a silicone-treated and / or alkylalkoxysilane-treated metal oxide, and (D-2) one or more metal oxides selected from the group consisting of amino acid-treated, acylated amino acid-treated, fatty acid-treated, fatty acid ester-treated, and phospholipid-treated metal oxides. <10> The oil-in-water emulsion cosmetic composition according to claim 1. <12> The metal oxide of component (D) is one or more selected from the group consisting of zinc oxide, titanium oxide, and iron oxide. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <13> Furthermore, it contains component (F) glittering powder. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <14> Furthermore, component (G) contains a silicone-based oil phase thickener and / or a silicone-based film-forming agent. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <15> Furthermore, the composition contains one or more nonionic surfactants other than component (E) having an HLB value of 12.0 to 16.0. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <16> The viscosity of the oil-in-water emulsion cosmetic product the next day after storage at 40°C is 10,000 mPa·s or more <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <17> The oil-in-water emulsion cosmetic is a sunscreen cosmetic or a makeup cosmetic. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. [Effects of the Invention]

[0010] The oil-in-water emulsion cosmetic of the present invention has excellent stability against temperature changes, can maintain a good feeling in use over a wide temperature range from high to low, and also has excellent cosmetic durability. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention will be described in detail below. The following description of the present invention may be based on preferred embodiments of the present invention, but the present invention is not limited to such embodiments. In this specification, the use of "to" to indicate a range of values ​​means that the values ​​before and after it are included as the lower and upper limits. In addition, the "average particle size" in this specification refers to the number average value (D50) obtained by observing the surface condition using a scanning electron microscope (JEOL, JSM-7800prime) and measuring 1,000 particles using an image analyzer (Luzex AP, Nireco Corporation). In the case of asymmetric shapes, the average particle size in the present invention is the median diameter D50 obtained from the distribution of the largest particle size. In this specification, "(meth)acrylic" is used as a concept that includes both acrylic and methacrylic, and "(meth)acryloyl" is used as a concept that includes both acryloyl and methacryloyl.

[0012] [Component (A)] The oil-in-water emulsion composition of the present invention contains one or more selected from the group consisting of (A-1) a copolymer of (meth)acrylic acid or a (meth)acrylic acid alkyl ester and a (meth)acrylic acid (polyoxyethylene monoalkyl ether), and (A-2) a copolymer containing acryloyldimethyltaurine as a constituent unit or a salt thereof.

[0013] (Component (A-1)) The copolymer according to component (A-1) is obtained by copolymerizing a monomer (a) selected from the group consisting of (meth)acrylic acid and (meth)acrylic acid acrylic esters, and a monomer (b) consisting of a (meth)acrylic acid polyoxyethylene alkyl ether.

[0014] (Monomer (a)) In the (meth)alkyl acid alkyl ester of the monomer (a) used in the present invention, the number of carbon atoms in the alkyl group of the alkyl ester is preferably 1 to 22, more preferably 1 to 18, and even more preferably 1 to 8. Examples of the (meth)acrylic acid alkyl ester include methyl (meth)acrylate, ethyl (meth)acrylate, and propyl (meth)acrylate.

[0015] (Monomer (b)) In the polyoxyethylene monoalkyl ether (meth)acrylate of the monomer (b) used in the present invention, the number of moles of ethylene oxide added is preferably 10-30, more preferably 12-25, and even more preferably 20-25.

[0016] In the polyoxyethylene monoalkyl ether (meth)acrylate, the alkyl group of the alkyl ether preferably has 12 to 24 carbon atoms, and more preferably has 16 to 22 carbon atoms.

[0017] Specific examples of the (meth)alkyl acid polyoxyethylene alkyl ether include an ester of acrylic acid and polyoxyethylene (20) stearyl ether, an ester of methacrylic acid and polyoxyethylene (20) stearyl ether, an ester of acrylic acid and polyoxyethylene (25) behenyl ether, and an ester of methacrylic acid and polyoxyethylene (25) behenyl ether, and more preferably an ester of methacrylic acid and polyoxyethylene (25) behenyl ether. The number in parentheses indicates the number of moles of ethylene oxide added.

[0018] The bonding mode of the copolymer (A-1) according to the present invention is not particularly limited, and examples thereof include block bonding, random bonding, etc. Furthermore, the copolymer (A-1) may contain other monomers and may have a crosslinked structure.

[0019] When other monomers are contained, the content of the other monomers is preferably 10 mol % or less, more preferably 5 mol % or less, and even more preferably 1 mol % or less, based on the total monomers. The lower limit of the content of the other monomers is 0 mol %.

[0020] The content ratio of monomer (a) to monomer (b) in the copolymer of component (A) is not particularly limited, and for example, the molar ratio of monomer (b) to monomer (a) (monomer (b) / monomer (a)) is 1 to 100.

[0021] Examples of the copolymer of component (A-1) include (meth)acrylic acid / (meth)acrylic acid alkyl ester / (meth)acrylic acid alkyl ether copolymers such as acrylates / polyoxyethylene (20) methacrylate cetyl ether copolymer, acrylates / polyoxyethylene (20) methacrylate stearyl ether copolymer, and acrylates / polyoxyethylene (25) methacrylate behenyl ether copolymer.

[0022] Among these, from the viewpoints of emulsion stability and a refreshing feeling upon application, component (A-1) is preferably an (acrylates / stearyl methacrylate) copolymer or an (acrylates / beheneth methacrylate) copolymer, more preferably an (acrylates / beheneth methacrylate) copolymer, and even more preferably an (acrylates / beheneth-25 methacrylate) copolymer.

[0023] An example of a commercially available product of an acrylate / polyoxyethylene (20) methacrylate stearyl ether copolymer ((acrylates / steareth-20 methacrylate) copolymer) is the product name "Acculin (registered trademark) 22" (manufactured by Rohm and Haas), and an example of a commercially available product of an acrylate / polyoxyethylene (25) methacrylate behenyl ether copolymer ((acrylates / beheneth-25 methacrylate) copolymer) is the product name "Acculin 28" (manufactured by Rohm and Haas) and the product name "NOVETHIX (registered trademark) L-10" (manufactured by Lubrizol Corporation).

[0024] Component (A-1) can usually be neutralized with a basic substance before use. Examples of basic substances include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, diisopropanolamine, and triisopropanolamine; inorganic bases such as sodium hydroxide, potassium hydroxide, and magnesium hydroxide; and basic amino acids such as L-arginine. These basic substances may be added in an amount sufficient to neutralize component (A-1). For example, it is preferable to add 20 to 150 mass% (hereinafter abbreviated as "%") of the basic substance relative to component (A-1).

[0025] (Component (A-2)) Component (A-2) is a copolymer containing acrylodimethyltaurine as a structural unit, and examples thereof include a copolymer of an acrylate and an acryloyldimethyltaurate, a copolymer of hydroxyethyl acrylate and an acryloyldimethyltaurate, a copolymer of acrylic acid, an acrylate, an acrylamide and an acryloyldimethyltaurate, etc. Among these, from the viewpoint of stability against temperature changes, it is preferable to use a copolymer of an acrylate and an acryloyldimethyltaurate, or a copolymer of hydroxyethyl acrylate and an acryloyldimethyltaurate.

[0026] More specifically, an example of a copolymer of an acrylate and an acrylodimethyltaurate is (sodium acrylate / sodium acryloyldimethyltaurate), and an example of a copolymer of hydroxyethyl acrylate and an acryloyldimethyltaurate is (hydroxyethyl acrylate / sodium acryloyldimethyltaurate).

[0027] Commercially available products of (hydroxyethyl acrylate / sodium acryloyldimethyltaurate) copolymers include, for example, products under the trade names "SIMULGEL NS" and "SIMULGEL FL" (manufactured by SEPPIC SA), and a commercially available product of (sodium acrylate / sodium acryloyldimethyltaurate) copolymers includes, for example, products under the trade name "SIMULGEL EG QD" (manufactured by SEPPIC SA).

[0028] In the oil-in-water emulsion cosmetic of the present invention, the above-mentioned component (A-1) or (A-2) may be used alone as component (A), but it is preferable to use them in combination. In particular, by using component (A-1) in combination with a copolymer of hydroxyethyl acrylate and acryloyldimethyl taurate as (A-2), better cosmetic durability can be achieved.

[0029] The content of component (A) in the oil-in-water emulsion cosmetic is not particularly limited, but the lower limit is preferably 0.05% or more, more preferably 0.2% or more, and even more preferably 0.3% or more. The upper limit is preferably 3% or less, more preferably 2% or less, and even more preferably 1% or less. The range is preferably 0.05 to 3%, preferably 0.2 to 2%, and even more preferably 0.3 to 1%.

[0030] When component (A-1) and component (A-2) are used in combination, the lower limit of the mass ratio of component (A-2) to component (A-1) (component (A-2) / component (A-1)) is preferably 1 or more, more preferably 2 or more, and even more preferably 4 or more. The upper limit is preferably 10 or less, more preferably 8 or less, and even more preferably 6 or less. The range is preferably 1 to 10, more preferably 2 to 8, and even more preferably 4 to 6.

[0031] [Component (B)] The oil-in-water emulsion cosmetic of the present invention contains a branched polysaccharide. As used herein, the term "polysaccharide" refers to a saccharide in which 10 or more monosaccharides, such as glucose, mannose, galactose, or glucuronic acid, are bonded together.

[0032] Examples of the branched polysaccharides include succinoglucan, which has a structure in which glucose and galactose form a main chain and succinic acid and pyruvic acid form branched chains; Tremella fuciformis polysaccharide, which has a structure in which mannose forms a main chain and fucose, xylose, and glucuronic acid form branched chains; gum arabic, which has a structure in which galactose forms a main chain and galactose, arabinose, rhamnose, and glucuronic acid form branched chains; locust bean gum, which has a structure in which mannose forms a main chain and galactose forms branched chains; carrageenan, which has a structure in which D-galactose bonds are alternately repeated via α-1,3 or β-1,4 bonds; and xanthan gum, which has a structure in which glucose forms a main chain and mannose and glucuronic acid form branched chains. Among these, polysaccharides containing mannose and / or glucuronic acid as structural units are preferred from the viewpoints of stability against temperature changes and cosmetic durability, and specifically Tremella fuciformis polysaccharide and xanthan gum are preferred. Examples of commercially available Tremella fuciformis polysaccharides include those under the trade names "TREMOIST-TP," "TREMOIST-SL," and "TREMOIST-SLB" (all manufactured by Nippon Fine Chemical Co., Ltd.) The above-mentioned branched chain polysaccharides may be used alone or in combination of two or more.

[0033] The content of component (B) in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but the lower limit is preferably 0.005% or more, more preferably 0.01% or more, and even more preferably 0.05% or more. The upper limit is preferably 2% or less, more preferably 1% or less, and even more preferably 0.5% or less. The range is preferably 0.005 to 2%, more preferably 0.01 to 1%, and even more preferably 0.05 to 0.5%.

[0034] [Component (C)] The oil-in-water emulsion cosmetic of the present invention contains one or more oils selected from the group consisting of (C-1) ester oils, (C-2) hydrocarbon oils, and (C-3) higher alcohols as (C) a liquid oil at 25°C. In this specification, "liquid at 25°C" refers to an oil having a viscosity of 7,000 mPa s or less when measured at 25°C under 1 atmosphere using a Brookfield viscometer (rotor No. 2).

[0035] (Component (C-1)) Component (C-1) is an ester of a straight-chain or branched-chain fatty acid and a straight-chain or branched-chain monohydric or polyhydric alcohol. The component (C-1) is not particularly limited as long as it is an ester oil that is liquid at 25°C, and examples thereof include jojoba oil, alkyl benzoate (C12-C15), cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, isotridecyl isononanoate, ethyl oleate, glyceryl tri-2-ethylhexanoate, propylene glycol dicaprate, neopentyl glycol dicaprate, polyglyceryl-2 triisostearate, diisostearyl malate, methylheptyl laurate, triethylhexanoin, diethylhexyl adipate, PG di(caprylic / capric acid), bisethoxydiglycol cyclohexane-1,4-dicarboxylate, ethyl p-aminobenzoate, and the like. Cetylhexyl dimethyl, ethylhexyl salicylate, diethylhexyl succinate, caprylic / capric triglyceride, 2-ethylhexyl hydroxystearate, ethylhexyl palmitate, polyglyceryl-2 diisostearate, polyglyceryl-2 tetraisostearate, neopentyl glycol diethylhexanoate, pentaerythrityl tetraethylhexanoate, diisopropyl sebacate, dibutyl adipate, dicaprylyl carbonate, tocopheryl acetate, olive oil, castor oil, macadamia nut oil, meadowfoam oil, rosehip oil, rice bran oil, avocado oil, linseed oil, safflower oil, sunflower oil, rapeseed oil, palm kernel oil, coconut oil, apricot kernel oil, almond oil, hazelnut oil, camellia oil, cottonseed oil, corn germ oil, etc. Among these, from the viewpoint of stability against temperature changes, etc., alkyl C12-15 benzoate, diisopropyl sebacate, cetyl 2-ethylhexanoate, ethyl oleate, isononyl isononanoate, and isopropyl myristate are preferred, and alkyl C12-15 benzoate and diisopropyl sebacate are more preferred. The above ester oils may be used alone or in combination of two or more, and it is preferred to use cetyl 2-ethylhexanoate in combination with alkyl C12-15 benzoate or diisopropyl sebacate.

[0036] (Component (C-2)) Component (C-2) is not particularly limited as long as it is a hydrocarbon oil that is liquid at 25°C, and examples thereof include liquid paraffin, hydrogenated polyisobutene, squalane, squalene, liquid isoparaffin, A-olefin oligomer, isododecane, isohexadecane, undecane, hydrogenated farnesene (hemisqualane), and tridecane. Among these, squalane and isodecane are preferred from the viewpoint of stability against temperature changes. The above hydrocarbon oils may be used alone or in combination of two or more. There is no particular limitation on the presence or absence of a volatile hydrocarbon oil, but it is preferable to contain a volatile hydrocarbon oil. A volatile hydrocarbon oil is a hydrocarbon oil with a boiling point of 260°C or less at normal pressure. One or a combination of two or more may be used as needed. The upper limit of the volatile hydrocarbon oil is preferably 4% or less, but there is no particular limitation.

[0037] (Component (C-3)) Component (C-3) is not particularly limited as long as it is a higher alcohol that is liquid at 25°C, but branched or unsaturated higher alcohols having 12 to 24 carbon atoms are preferred, such as hexyldecanol, isostearyl alcohol, octyldodecanol, decyltetradecanol, and oleyl alcohol. Among these, from the viewpoint of stability against temperature changes, octyldodecanol, decyltetradecanol, and isostearyl alcohol are preferred, and octyldodecanol is more preferred. The above higher alcohols may be used alone or in combination of two or more.

[0038] Although any of components (C-1) to (C-3) may be used alone as component (C), their combined use can further improve stability against temperature changes and cosmetic durability. For example, it is preferable to use component (C-1) in combination with component (C-2) or (C-3). The content of component (C) in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but the lower limit is preferably 1.5% or more, more preferably 2.5% or more, and even more preferably 3.5% or more. The upper limit is preferably 25% or less, more preferably 20% or less, and even more preferably 15% or less. The range is preferably 1.5 to 25%, more preferably 2.5 to 20%, and even more preferably 3.5 to 15%.

[0039] [Component (D)] The oil-in-water emulsion cosmetic of the present invention contains 7 to 25% of a hydrophobic treated metal oxide.

[0040] Examples of metal oxides used in the present invention include zinc oxide, iron oxide, titanium oxide, zirconium oxide, cerium oxide, and chromium oxide. Among these, zinc oxide, iron oxide, and titanium oxide are preferred from the viewpoint of UV protection effect, etc. The above metal oxides may be used alone or in combination of two or more.

[0041] The average particle size of the metal oxide is not particularly limited. From the viewpoints of UV protection effect and dispersibility, it is preferably 0.001 μm to 1 μm, more preferably 0.002 μm to 0.1 μm, and even more preferably 0.0025 μm to 0.05 μm. From the viewpoint of cosmetic effect, it is preferably 0.05 μm to 5 μm, more preferably 0.1 μm to 2.5 μm, and even more preferably 0.2 μm to 0.5 μm.

[0042] In this specification, the average particle size of a metal oxide can be measured by image analysis of a transmission electron microscope image. Specifically, approximately 10 mg of a sample is thoroughly dispersed in 1-propanol on a glass slide to obtain a dispersion. The dispersion is then stretched to obtain a thin film sample. The thin film of the sample is placed on a transmission electron microscope (TEM) measurement mesh with a support film attached. The mesh (dried coating film) is placed in a transmission electron microscope (e.g., model S-4800, Hitachi High-Technologies Corporation) and observed to obtain an image of the dried coating film showing individual particles. The image of this dried coating film surface is processed using an image analysis particle size distribution analyzer (e.g., model MAC-VIEW, Mountec Co., Ltd.) with 1,000 particles measured each time, and the particle size is measured. This allows the average particle size D50 of the sample (powder) to be obtained by image analysis of the transmission electron microscope (TEM) image.

[0043] The shape of the metal oxide is not particularly limited, but examples thereof include granular, spherical, plate-like, spindle-like, dendritic, and balloon-like shapes. Among these, granular, spherical, plate-like, and spindle-like shapes are preferred from the viewpoint of UV protection effect. The metal oxide may be partially or completely surface-treated with an inorganic compound such as aluminum hydroxide, hydrated silica, or alumina.

[0044] The hydrophobic treatment for metal oxides is not particularly limited, and examples thereof include silicone treatment, alkylalkoxysilane treatment, organic titanate treatment, amino acid treatment, acylated amino acid treatment, fatty acid treatment, fatty acid ester treatment, phospholipid treatment, polyalkylene oxide treatment, and ceramide treatment, and the metal oxide may be treated with one or more of these. Among these, from the viewpoint of stability against temperature changes, one or more selected from silicone treatment, alkylalkoxysilane treatment, amino acid treatment, acylated amino acid treatment, fatty acid treatment, fatty acid ester treatment, and phospholipid treatment are preferred. Furthermore, from the viewpoint of stability against temperature changes, etc., it is preferable to contain two or more of the above hydrophobic treatments combined with the same metal oxide, or to contain two or more hydrophobic treated metal oxides with different hydrophobic treatments, the latter particularly containing (D-1) a metal oxide treated with a silicone and / or alkylalkoxysilane, and (D-2) one or more metal oxides selected from the group consisting of an amino acid treatment, an acylated amino acid treatment, a fatty acid treatment, a fatty acid ester treatment, and a phospholipid treatment, and it is more preferable to use two or more of them in combination.

[0045] Examples of silicone treatments include methylhydrogenpolysiloxane treatment and dimethylpolysiloxane treatment.

[0046] An example of the alkylalkoxysilane treatment is triethoxycaprylylsilane treatment.

[0047] Examples of amino acid treatments include proline treatment, hydroxyproline treatment, alanine treatment, glycine treatment, lysine treatment, aspartic acid treatment, glutamic acid treatment, theanine treatment, or treatment with salts thereof.

[0048] Examples of the amination and acylation treatment include lauroyl lysine treatment, sodium dilauroyl glutamate lysine treatment (dilauramidoglutamide lysine Na treatment), disodium stearoyl glutamate treatment, and sodium lauroyl aspartate treatment.

[0049] Examples of fatty acid treatments include fatty acids or metal salts thereof, and among these, fatty acids having 12 to 18 carbon atoms are preferred. Examples of salts thereof include calcium, magnesium, zinc, and aluminum, and aluminum salts are preferred. Among these, treatment with isostearic acid, treatment with stearic acid, or treatment with salts thereof are more preferred.

[0050] Examples of fatty acid ester treatments include esters of fatty acids and polyhydric alcohols, such as pentaerythritol fatty acid ester treatment, trimethylolpropane fatty acid ester treatment, glycerin fatty acid ester treatment, and polyglycerin fatty acid ester treatment. The fatty acids are not particularly limited, and may be branched or linear, saturated or unsaturated. For fatty acid ester treatments, it is preferable that all of the polyhydric alcohols and hydroxyl groups are esterified with fatty acids. Of the fatty acids, fatty acids having 8 to 18 carbon atoms are preferred. Specific examples of pentaerythritol fatty acid ester treatments include pentaerythrityl tetraethylhexanoate, pentaerythrityl tetramyristate, pentaerythrityl tetraisostearate, and dipentaerythrityl hexaisononanoate. Specific examples of trimethylolpropane fatty acid ester treatments include trimethylolpropane triisostearate and trimethylolpropane tri-2-ethylhexanoate. Specific examples of glycerin fatty acid ester treatments include glycerin triisopalmitate, caprylic / capric triglyceride, and glycerin triethylhexanoate. Specific examples of polyglycerin fatty acid ester treatments include polyglyceryl-6 octacaprylate treatment, polyglyceryl-6 octastearate treatment, polyglyceryl-2 tetraisostearate treatment, polyglyceryl-2 triisostearate treatment, polyglyceryl-10 decaisostearate treatment, polyglyceryl-10 decaethylhexanoate treatment, polyglyceryl-10 pentaisostearate treatment, polyglyceryl-10 pentaoleate treatment, polyglyceryl-10 pentastearate treatment, and polyglyceryl-8 deca(erucic acid / isostearate / ricinoleic acid) treatment. Among these, glycerin fatty acid ester treatment and polyglycerin fatty acid ester treatment are preferred. When polyglycerin is used, its degree of polymerization is not particularly limited, but is preferably 2 or more and 10 or less. More preferred are polyglyceryl-2 tetraisostearate treatment and polyglyceryl-2 triisostearate treatment, and even more preferred is polyglyceryl-2 tetraisostearate treatment.

[0051] The phospholipid treatment is not particularly limited, but examples thereof include naturally derived phospholipids, specifically soybean-derived phospholipids, egg yolk-derived phospholipids, sunflower phospholipids, and processed forms thereof such as hydrogenated phospholipids, lysophospholipids, and hydrogenated lysophospholipids. The alcohols constituting phospholipids often contain nitrogen, and examples include choline, ethanolamine, inositol, and serine. Soybean-derived phospholipids are preferred. Examples include lecithin treatment and hydrogenated lecithin treatment. Furthermore, hydrogenated phospholipids are more preferred.

[0052] The method for hydrophobizing the metal oxide is not particularly limited, and the metal oxide can be produced by a known method. For example, the hydrophobizing agent and the powder particles to be treated are added to a solvent, stirred in a ball mill or the like, dried as necessary, washed with water, and filtered repeatedly to remove impurities, and then dried and pulverized to obtain the desired hydrophobized powder. Alternatively, the surface may be simultaneously treated with several types of compounds that are hydrophobic treatment agents, or the surface may be pre-treated with one of the compounds and then further treated with another compound, thereby allowing hydrophobic treatment with a plurality of hydrophobic treatment agents.

[0053] The amount of the hydrophobic treatment agent to be used relative to the metal oxide is not particularly limited, but is preferably 1 to 7%, more preferably 1 to 5%, and even more preferably 1 to 4% relative to the metal oxide.

[0054] The content of component (D) in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but the lower limit is preferably 7% or more, more preferably 9% or more, and even more preferably 14% or more. The upper limit is preferably 25% or less, more preferably 23% or less, and even more preferably 20% or less. The range is preferably 7 to 25%, more preferably 9 to 23%, and even more preferably 14 to 20%.

[0055] In the oil-in-water emulsion cosmetic of the present invention, the mass ratio of component (D) to the total content of components (A) and (B) (component (D) / (component (A) + component (B))) is preferably 5 or more, more preferably 10 or more, even more preferably 15 or more, and particularly preferably 20 or more, from the viewpoint of stability against temperature changes, etc. The upper limit is preferably 85 or less, more preferably 70 or less, even more preferably 60 or less, and particularly preferably 50 or less. The range is preferably 5 to 85, more preferably 10 to 70, even more preferably 15 to 60, and particularly preferably 20 to 50.

[0056] [Component (E)] The oil-in-water emulsion cosmetic of the present invention contains, as component (E), one or more components selected from the group consisting of component (E-1) an acrylic-silicone graft copolymer, (E-2) polyhydroxystearic acid, and (E-3) a polyglycerin-alkyl-co-modified silicone.

[0057] (Component (E-1)) The acrylic-silicone graft copolymer (E-1) used in the present invention possesses the properties of both acrylic acid groups and dimethylpolysiloxane groups. There are no particular limitations on the structure, and it may be a graft copolymer having dimethylpolysiloxane groups as the main chain and acrylic acid groups as side chains, a linear block copolymer or crosslinked polymer in which dimethylpolysiloxane groups and acrylic acid groups are alternately bonded, or a polymer having acrylic acid as the main chain and dimethylpolysiloxane groups as side chains. The dimethylpolysiloxane groups may be linear or branched, or may be co-modified with an organic group such as an alkyl group.

[0058] Specific examples of the acrylic-silicone graft copolymer include (acrylates / dimethicone) copolymer, (acrylates / stearyl acrylate / dimethicone methacrylate) copolymer, (acrylates / ethylhexyl acrylate / dimethicone methacrylate) copolymer, and (acrylates / behenyl acrylate / dimethicone methacrylate) copolymer. Among these, (acrylates / ethylhexyl acrylate / dimethicone methacrylate) copolymer is preferred from the viewpoint of stability against temperature changes, etc.

[0059] Examples of commercially available products include those under the trade names "KP-540," "KP-545L," "KP-549," "KP-550," "KP-545," "KP-562," "KP-561P," "KP-578," and "KP-578P" (all manufactured by Shin-Etsu Chemical Co., Ltd.). The above acrylic-silicone graft copolymers may be used alone or in combination of two or more.

[0060] (Component (E-2)) Component (E-2) polyhydroxystearic acid used in the present invention is a polymerized form of 12-hydroxystearic acid. There are no particular limitations on the degree of polymerization, but the lower limit is preferably 4 or more, and more preferably 6 or more. The upper limit of the degree of polymerization is preferably 10 or less. The range of polymerization is preferably 4 to 10, and more preferably 6 to 10. By keeping the degree of polymerization within the above range, the dispersibility of component (D) and other powders contained in the oil-in-water emulsion cosmetic of the present invention in the oil phase is improved.

[0061] Examples of commercially available products include those under the trade names "Sarasco HS-6C" (manufactured by Nisshin Oillio Group Co., Ltd.) and "PHF-30-C" (manufactured by Ito Oil Mills Co., Ltd.) The polyhydroxystearic acids may be used singly or in combination of two or more.

[0062] (Component (E-3)) The polyglycerin-alkyl co-modified silicone (component (E-3)) used in the present invention is a copolymer having a silicone chain and a polyglyceryl group, with an alkyl group introduced into the side chain or terminal. The alkyl group preferably has a linear or branched carbon number of 6 to 20, and more preferably has a linear or branched carbon number of 10 to 20. Polyglycerin-alkyl co-modified silicones also include those in which a silicone dendron group has been introduced into the side chain or terminal.

[0063] Examples of polyglycerin-alkyl co-modified silicones include lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone and cetyl diglyceryl tris(trimethylsiloxy)silylethyl dimethicone. Of these, cetyl diglyceryl tris(trimethylsiloxy)silylethyl dimethicone is preferred from the standpoint of stability against temperature changes.

[0064] Examples of commercially available products include those under the trade names "KF-6105" (manufactured by Shin-Etsu Chemical Co., Ltd.), "ES-5600" (manufactured by Dow-Toray Industries, Inc.), and "ES-5700" (manufactured by Dow-Toray Industries, Inc.) The above polyglycerin-alkyl co-modified silicones may be used alone or in combination of two or more types.

[0065] The content of component (E) in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but from the viewpoint of cosmetic durability, etc., the lower limit is preferably 0.05% or more, more preferably 0.1% or more, and even more preferably 0.3% or more. The upper limit is preferably 5% or less, more preferably 3% or less, and even more preferably 1% or less. The range is preferably 0.05 to 5%, more preferably 0.1 to 3%, and even more preferably 0.3 to 1%.

[0066] In the oil-in-water emulsion cosmetic of the present invention, the mass ratio of component (E) to component (D) (component (E) / component (D)) is preferably 0.005 or more, more preferably 0.01 or more, even more preferably 0.015 or more, and particularly preferably 0.02 or more, from the viewpoints of stability against temperature changes, cosmetic durability, etc. The upper limit is preferably 0.25 or less, more preferably 0.15 or less, even more preferably 0.1 or less, and particularly preferably 0.05 or less. The range is preferably 0.005 to 0.25, more preferably 0.01 to 0.15, even more preferably 0.015 to 0.1, and particularly preferably 0.02 to 0.05.

[0067] [Component (F) Glittering powder] From the viewpoint of achieving excellent cosmetic long-lasting effects, the oil-in-water emulsion cosmetic of the present invention preferably further contains component (F) glittering powder.

[0068] The component (F) glittering powder according to the present disclosure is not particularly limited, and examples thereof include glass powders such as titanium mica, bismuth oxychloride, organic pigment-treated titanium mica, titanium dioxide-coated mica, titanium dioxide-coated synthetic phlogopite, titanium dioxide-coated bismuth oxychloride, iron oxide titanium mica, Prussian blue-treated titanium mica, carmine-treated titanium mica, fish scale foil, and titanium dioxide-coated glass powder; glittering pigments such as titanium oxide-coated synthetic phlogopite, resin laminate powders such as polyethylene terephthalate-aluminum-epoxy laminated powder, polyethylene terephthalate-aluminum laminated powder, polyethylene terephthalate-polyolefin laminated film powder, and polyethylene terephthalate-polymethyl methacrylate laminated film powder; 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. Among these, titanium oxide-coated synthetic phlogopite, titanium mica, and titanium mica treated with organic pigments are preferred from the viewpoint of excellent cosmetic durability.The above glittering powders can be used alone or in combination of two or more kinds.

[0069] The average particle size of the glittering powder preferably has a lower limit of 1 μm or more, more preferably 3 μm or more, and even more preferably 5 μm or more. The upper limit is preferably 50 μm or less, more preferably 30 μm or less, and even more preferably 15 μm or less. The range is preferably 1 to 50 μm, more preferably 3 to 30 μm, and even more preferably 5 to 15 μm. The average particle size of the glittering powder can be measured by image analysis of transmission electron microscope images, as with the above-mentioned component (D).

[0070] The shape of the glittering powder is not particularly limited, but examples thereof include granular, spherical, and plate-like shapes.

[0071] The content of component (F) in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but the lower limit is preferably 0.1% or more, more preferably 0.3% or more, and even more preferably 0.5% or more. The upper limit is preferably 5% or less, more preferably 4% or less, and even more preferably 3% or less. The range is preferably 0.1 to 5%, more preferably 0.3 to 4%, and even more preferably 0.5 to 3%.

[0072] [Component (G)] From the viewpoints of reducing the fluidity of the cosmetic film, thereby making makeup smearing less noticeable, and providing excellent cosmetic long-lasting effects, it is preferable that the oil-in-water emulsion cosmetic of the present invention further contains, as component (G), component (G-1) a silicone-based oil phase thickener or component (G-2) a silicone-based film-forming agent.

[0073] (Component (G-1)) The silicone-based oil phase thickener, component (G-1), used in the present invention is an oil phase thickener having a silicone skeleton in the main chain or side chain. The silicone-based oil phase thickener is not particularly limited, but examples thereof include dimethicone crosspolymer, (dimethicone / vinyl dimethicone) crosspolymer, (dimethicone / phenyl vinyl dimethicone) crosspolymer, (vinyl dimethicone / lauryl dimethicone) crosspolymer, and (dimethicone / vinyl trimethylsiloxysilicate) crosspolymer. Among them, (dimethicone / vinyl trimethylsiloxysilicate) crosspolymer is preferred from the viewpoint of excellent cosmetic long-lasting effect.

[0074] (Component (G-2)) The silicone film-forming agent (Component (G-2)) used in the present invention is a film-forming polymer having a silicone skeleton in the main chain or side chain. The silicone film-forming agent is not particularly limited, but may include a compound having a structure of the following average formula (1). R1 n SiO (4―n) / 2 ...Average formula (1) In the silicone resin, R1 is independently a group selected from an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 12 carbon atoms. Examples include trimethylsiloxysilicate having n=3 units and n=0 units in the average formula (1) above, and polymethylsilsesquioxane having n=3 units and n=1 units in the average formula (1) above. Note that n in the average formula (1) above is not particularly limited. Among these, silicone film-forming agents having n=3 units and n=0 units in the average formula (1) above are more preferred from the viewpoint of excellent cosmetic long-lasting effect. Commercially available trimethylsiloxysilicate products include those sold under the trade names "Silicon X-21-5250" (50% decamethylcyclopentasiloxane solution), "Silicon X-21-5250L" (50% volatile dimethicone solution), "KF-7312T" (60% methyltrimethicone solution), "KF-7312J" (50% decamethylcyclopentasiloxane solution), "KF-7312K" (60% dimethicone solution), and "KF-731 2L" (50% volatile dimethicone solution), "KF-9021" (50% decamethylcyclopentasiloxane solution), "KF-9021L" (50% volatile dimethicone solution) (all manufactured by Shin-Etsu Chemical Co., Ltd.), "SR1000" (100% purity), "SS4267" (35% dimethicone solution), and "SILSOFT74" (75% isododecane solution) (manufactured by Momentive Performance Materials Japan). Commercially available polymethylsilsesquioxane products include, for example, those under the trade name "SILFORM FLEXIBLE RESIN" (manufactured by Momentive Performance Materials).

[0075] The content of component (G) in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but the lower limit is preferably 0.01% or more, more preferably 0.05% or more, and even more preferably 0.1% or more. The upper limit is preferably 2% or less, more preferably 1% or less, and even more preferably 0.75% or less. The range is preferably 0.01 to 2%, more preferably 0.05 to 1%, and even more preferably 0.1 to 0.75%.

[0076] [Component (H)] The oil-in-water emulsion cosmetic of the present invention preferably further contains Component (H) zeolite, from the viewpoint of achieving excellent cosmetic durability by adsorbing sebum. Examples of zeolites include A-type zeolite, X-type zeolite, Y-type zeolite, mordenite, ferrierite, beta-type zeolite, and ZSM-5. Commercially available products such as "Zeolum A3," "Zeolum A4," and "Zeolum A5" (all manufactured by Tosoh Corporation) are suitable for use.

[0077] The content of component (H) in the oil-in-water emulsion cosmetic of the present invention is not particularly limited, but is preferably 0.01 to 1%, more preferably 0.02 to 1%, and even more preferably 0.02 to 0.5%.

[0078] [Component (I)] The oil-in-water emulsion cosmetic of the present invention preferably further contains, as component (I), a nonionic surfactant having an HLB value of 12.0 to 16.0, from the viewpoints of reducing the fluidity of the cosmetic film, thereby making makeup smearing less noticeable, and providing excellent cosmetic long-lasting effects.

[0079] The component (I) nonionic surfactant having an HLB value of 12.0 to 16.0 used in the present invention is not particularly limited, and examples thereof include sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, ethylene oxide derivatives of glycerin fatty acid esters, propylene glycol fatty acid esters, ethylene oxide derivatives of propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyoxyethylene castor oil derivatives, polyoxyethylene phytostanol ethers, polyoxyethylene phytosterol ethers, polyoxyethylene cholestanol ethers, polyoxyethylene cholesterol ethers, polyoxyethylene cholesteryl ethers, and polyoxyalkylene-modified organopolysiloxane fatty acid esters. Among these, polyoxyethylene sorbitan monooleate (20EO) (HLB 15.0), polyoxyethylene hydrogenated castor oil (80EO) (HLB 15.0), polyoxyethylene hydrogenated castor oil (60EO) (HLB 14.0), polyoxyethylene hydrogenated castor oil (50EO) (HLB 13.5), polyoxyethylene hydrogenated castor oil (40EO) (HLB 12.5), polyoxyethylene phytosterol (10EO) (HLB 14.0), polyoxyethylene hydrogenated castor oil (50EO) (HLB 13.5), polyoxyethylene hydrogenated castor oil (40EO) (HLB 12.5), polyoxyethylene phytosterol (10EO) (HLB 14.0), polyoxyethylene hydrogenated castor oil (50EO) (HLB 13.5), polyoxyethylene hydrogenated castor oil (40EO) (HLB 12.5), polyoxyethylene hydrogenated castor oil (50EO) (HLB 13.5), polyoxyethylene hydrogenated castor oil (50EO) (HLB 13.5), polyoxyethylene hydrogenated castor oil (50EO) (HLB 13.5), polyoxyethylene hydrogenated castor oil (50EO) (HLB 14.0 ... Preferred are polyoxyethylene hydrogenated castor oil (80EO) (HLB 15.0) and polyoxyethylene hydrogenated castor oil (60EO) (HLB 14.0). One or more types of component (I) can be used as needed.

[0080] The content of component (I) is not particularly limited, but is preferably 0.001 to 10%, more preferably 0.01 to 5%, and even more preferably 0.01 to 1%.

[0081] From the viewpoint of stability against temperature changes, etc., it is preferable that the oil-in-water emulsion cosmetic of the present invention is substantially free of straight-chain saturated higher aliphatic alcohols and straight-chain saturated higher fatty acids that are solid at 25° C. This makes it possible to further suppress viscosity changes under high-temperature conditions, for example, 40° C. or higher. It also makes it possible to further suppress gelation under low-temperature conditions, for example, 5° C. or lower.

[0082] In the oil-in-water emulsion cosmetic of the present invention, the phrase "substantially free of linear saturated higher fatty alcohols and linear saturated higher fatty acids" means that the content of linear saturated higher fatty alcohols and linear saturated higher fatty acids that are solid at 25°C in the oil-in-water emulsion cosmetic is 1% or less, preferably 0.5% or less, more preferably 0.3% or less, even more preferably 0.1% by mass or less, and particularly preferably 0% (not contained).

[0083] Examples of the straight-chain saturated fatty alcohols include stearyl alcohol, cetanol, myristyl alcohol, cetearyl alcohol, cetostearyl alcohol, arachyl alcohol, and behenyl alcohol.

[0084] Examples of the straight-chain saturated higher fatty acids that are solid at 25°C include lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, cerotic acid, and montanic acid.

[0085] The viscosity of the oil-in-water emulsion cosmetic according to the present invention is not particularly limited and can be set as appropriate, but for example, when left to stand at 30°C for 24 hours (viscosity the next day after storage at 30°C), the upper limit is preferably 80,000 mPa·s or less, more preferably 60,000 mPa·s or less, and even more preferably 40,000 mPa·s or less. The lower limit is preferably 20,000 mPa·s or more, more preferably 25,000 mPa·s or more, and even more preferably 30,000 mPa·s or more. The range is preferably 20,000 to 80,000 mPa·s, more preferably 25,000 to 60,000 mPa·s, and even more preferably 30,000 to 40,000 mPa·s.

[0086] Furthermore, when left to stand at 40°C for 24 hours (viscosity the next day after storage at 40°C), the upper limit is preferably 45,000 mPa·s or less, more preferably 40,000 mPa·s or less, and even more preferably 35,000 mPa·s or less. The lower limit is preferably 10,000 mPa·s or more, more preferably 13,000 mPa·s or more, and even more preferably 16,000 mPa·s or more. The range is preferably 10,000 to 45,000 mPa·s, more preferably 13,000 to 40,000 mPa·s, and even more preferably 16,000 to 35,000 mPa·s.

[0087] Furthermore, when allowed to stand at 5°C for 24 hours (viscosity the next day after storage at 5°C), the upper limit is preferably 200,000 mPa·s or less, more preferably 150,000 mPa·s or less, and even more preferably 100,000 mPa·s or less. The lower limit is preferably 35,000 mPa·s or more, more preferably 37,000 mPa·s or more, and even more preferably 40,000 mPa·s or more. The range is preferably 35,000 to 200,000 mPa·s, more preferably 37,000 to 150,000 mPa·s, and even more preferably 40,000 to 100,000 mPa·s. In the present invention, the viscosity of the oil-in-water emulsion cosmetic is a measured value obtained using a B-type rotational viscometer (manufactured by Brookfield).

[0088] The viscosity ratio of the viscosity (mPa·s) measured after standing at 5°C for 24 hours to the viscosity (mPa·s) measured after standing at 40°C for 24 hours (viscosity measured after standing at 5°C for 24 hours / viscosity measured after standing at 40°C for 24 hours) is preferably 0.5 to 7.0, more preferably 1.0 to 7.0, even more preferably 1.0 to 5.0, still more preferably 1.0 to 4.0, and particularly preferably 1.0 to 3.0.

[0089] The oil-in-water emulsion cosmetic of the present invention may contain optional ingredients other than those described above, as long as the effects of the present invention are not impaired. Examples of optional ingredients include surfactants, UV absorbers, antioxidants, moisturizers, thickeners, preservatives, pH adjusters, antibacterial agents, chelating agents, plant extracts, vitamins, and fragrances.

[0090] The oil-in-water emulsion cosmetic according to the present invention may be in the form of, for example, a liquid, a gel, an emulsion, a cream, a paste, or a solid.

[0091] The oil-in-water emulsion cosmetic according to the present invention can be used, for example, in hair cosmetics such as shampoos, rinses, and conditioners, facial cleansing cosmetics, sunscreen cosmetics, and makeup cosmetics such as foundations, makeup bases, eye shadows, lipsticks, and lip glosses. Of these, its use in sunscreen cosmetics and makeup cosmetics is preferred.

[0092] [Method of manufacturing oil-in-water emulsion cosmetics] The method for producing the oil-in-water emulsion cosmetic of the present invention is not particularly limited, and it can be produced by mixing the essential and optional components described above according to a conventional method. For example, the oil-in-water emulsion cosmetic of the present invention can be obtained by mixing components (A), (B), and water while heating to 70-80°C to prepare an aqueous phase, mixing components (C), (D), and (E) to prepare an oil phase, mixing them until homogenous at 70-80°C, and cooling. It is particularly preferred to include a step of pre-mixing and dispersing the oil phase containing components (D) and (E), then adding the dispersion containing components (D) and (E) to the oil phase and emulsifying it. Note that component (D) may be partially contained in the aqueous phase, and the phase to which it is added is not particularly limited. However, from the viewpoint of stability against temperature changes, it is preferable to add it to both the oil phase and the aqueous phase. From the same viewpoint, it is preferable that the oil phase contains component (D) having an average particle size of 0.001 μm to 1 μm, and it is preferable that the oil phase and / or the aqueous phase contain component (D) having an average particle size of 0.05 μm to 5 μm, but this is not particularly limited.

[0093] The aqueous phase and the oil phase are preferably mixed and emulsified so that the total average particle size of component (D) or component (F) in the oil phase is 0.2 μm or less, and the total average particle size of component (D) or component (F) in the aqueous phase is 0.2 μm or more. When component (F) is used, it is preferably mixed into the aqueous phase.

[0094] The oil-in-water emulsion composition of the present invention obtained as described above can be filled into various containers such as bottles, jars, tubes, and dispensers, and can take various forms. Among these containers, tube containers containing the cosmetic require a series of operations: a certain amount of cosmetic is dispensed by applying an appropriate load, such as by pressing, and dispensing stops when the load is released. Generally, if the viscosity of the cosmetic contained in the container is too high, it is difficult to press and excessive force is required for dispensing. Conversely, if the viscosity is too low, the cosmetic is dispensed in excess when pressed and may drip from the hand when dispensed, greatly affecting usability due to viscosity. Furthermore, in dispenser containers, if the viscosity of the cosmetic contained is too high, problems may occur in which the cosmetic does not dispense. Therefore, the cosmetic to be contained must have low temperature sensitivity of viscosity and be resistant to viscosity changes even at high and low temperatures. In contrast, as described above, the oil-in-water emulsion composition of the present invention has excellent viscosity stability against temperature changes, and is unlikely to drip or deteriorate in dischargeability even when contained in, for example, a tube container with a discharge port diameter of 1.5 to 2 mm, and is therefore suitable for being contained in a tube container or dispenser container.

[0095] The present invention can also employ the following configuration. <1> The following components (A) to (E): (A) One or more selected from the group consisting of a copolymer of (meth)acrylic acid or a (meth)acrylic acid alkyl ester and (meth)acrylic acid (polyoxyethylene monoalkyl ether), and a copolymer containing acryloyldimethyltaurine as a constituent unit or a salt thereof. (B) Branched chain polysaccharides (C) One or more liquid oils at 25°C selected from the group consisting of ester oils, hydrocarbon oils, and higher alcohols (D) Hydrophobized metal oxide: 7% by mass or more and 25% by mass or less (E) One or more selected from the group consisting of acrylic-silicone graft copolymer, polyhydroxystearic acid, and polyglycerin-alkyl-co-modified silicone The oil-in-water emulsion cosmetic contains <2> The mass ratio of component (E) to component (D) (component (E) / component (D)) is 0.005 to 0.25. <1> The oil-in-water emulsion cosmetic composition according to claim 1. <3> The viscosity ratio of the oil-in-water emulsion cosmetic's viscosity (mPa·s) at 5°C to its viscosity (mPa·s) at 40°C (viscosity at 5°C / viscosity at 40°C) is 1.0 to 7.0. <1> or <2> The oil-in-water emulsion cosmetic composition according to claim 1. <4> The mass ratio of the content of component (D) to the total content of components (A) and (B) (component (D) / (component (A)+component (B))) is 10 to 85. <1> ~ <3> The oil-in-water emulsion cosmetic according to any one of the above items. <5> Component (B) is a polysaccharide having mannose and / or glucuronic acid as a constituent unit. <1> ~ <4> The oil-in-water emulsion cosmetic according to any one of the above items. <6> The ester oil of component (C) is one or more selected from the group consisting of alkyl benzoate (C12-C15), diisopropyl sebacate, and cetyl 2-ethylhexanoate. <1> ~ <5> The oil-in-water emulsion cosmetic according to any one of the above items. <7> The hydrocarbon oil of component (C) contains a volatile hydrocarbon oil. <1> ~ <6> The oil-in-water emulsion cosmetic according to any one of the above items. <8> The hydrophobic treatment of component (D) is one or more treatments selected from the group consisting of silicone treatment, alkylalkoxysilane treatment, amino acid treatment, acylated amino acid treatment, fatty acid treatment, fatty acid ester treatment, and phospholipid treatment. <1> ~ <7> The oil-in-water emulsion cosmetic according to any one of the above items. <9> Contains two or more types of hydrophobic treatment of component (D) combined with the same metal oxide. <1> ~ <8> The oil-in-water emulsion cosmetic according to any one of the above items. <10> Component (D) contains two or more hydrophobic treated metal oxides with different hydrophobic treatments. <1> ~ <9> The oil-in-water emulsion cosmetic according to any one of the above items. <11> The component (D) contains (D-1) a silicone-treated and / or alkylalkoxysilane-treated metal oxide, and (D-2) one or more metal oxides selected from the group consisting of amino acid-treated, acylated amino acid-treated, fatty acid-treated, fatty acid ester-treated, and phospholipid-treated metal oxides. <10> The oil-in-water emulsion cosmetic composition according to claim 1. <12> The metal oxide of component (D) is one or more selected from the group consisting of zinc oxide, titanium oxide, and iron oxide. <1> ~ <11> The oil-in-water emulsion cosmetic according to any one of the above items. <13> Furthermore, it contains component (F) glittering powder. <1> ~ <12> The oil-in-water emulsion cosmetic according to any one of the above items. <14> Furthermore, component (G) contains a silicone-based oil phase thickener and / or a silicone-based film-forming agent. <1> ~ <13> The oil-in-water emulsion cosmetic according to any one of the above items. <15> Furthermore, the composition contains one or more nonionic surfactants other than component (E) having an HLB value of 12.0 to 16.0. <1> ~ <14> The oil-in-water emulsion cosmetic according to any one of the above items. <16> The viscosity of the oil-in-water emulsion cosmetic product the next day after storage at 40°C is 10,000 mPa·s or more <1> ~ <15> The oil-in-water emulsion cosmetic according to any one of the above items. <17> The oil-in-water emulsion cosmetic is a sunscreen cosmetic or a makeup cosmetic. <1> ~ <16> The oil-in-water emulsion cosmetic according to any one of the above items. [Example]

[0096] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

[0097] [Examples 1 to 33 and Comparative Examples 1 to 7] Oil-in-water emulsion cosmetics having the formulations shown in Tables 1 to 6 below were produced by the preparation methods described below. The obtained oil-in-water emulsion cosmetics were evaluated for (1) viscosity, (2) stability against temperature changes, and (3) cosmetic durability using the methods described below. The results are shown in Tables 1 to 6.

[0098] (Methods for preparing oil-in-water emulsion cosmetics of Examples 1 to 33 and Comparative Examples 1 to 7) (Only the raw materials listed in each table number were blended.) A. Ingredients 8 to 27 were processed twice with a three-roller roller. B. Components 28 to 35 were heated to 75°C and dissolved uniformly. C. Components 1 to 7 and component 38 were added to component 39, and the mixture was heated to 75°C while stirring with a disperser mixer (rotation speed: 3,000 rpm). DA was added to B, mixed uniformly, and heated to 75°C. ED was added to C, emulsified, and stirred for 5 minutes. F. E was cooled to 40°C while stirring with a disper mixer (rotation speed: 3,000 rpm). Components 36 and 37 were added to the GF and mixed for a further 5 minutes to obtain an oil-in-water emulsion cosmetic.

[0099] [Table 1]

[0100] [Table 2]

[0101] [Table 3]

[0102] [Table 4]

[0103] [Table 5]

[0104] [Table 6]

[0105] Details of the components used in Tables 1 to 6 are shown below. *1: NOVETHIX L-10 POLYMER (manufactured by Lubrizol Advanced Materials) (A: 30.25%, aqueous solution) *2: SIMULGEL FL (SEPPIC SA) (A: 37.5%, isohexadecane (C: 25.5%), polysorbate 80, water, sorbitan isostearate) *3: SIMULGEL EG QD (SEPPIC SA) (A: 37.5%, isohexadecane (C: 22.5%), polysorbate 80, water, sorbitan oleate) *4: Carbopol 1382 Polymer (manufactured by Lubrizol Advanced Materials) *5: Xanthan Clear-80 (manufactured by DANISCO Japan) *6: Tremoist-TP (manufactured by Nippon Fine Chemical Co., Ltd.) *7: Metrose 60SH4000 (Shin-Etsu Chemical Co., Ltd.) *8: SP SORAVEIL XTP-1 MBAL (manufactured by Croda Japan Co., Ltd.) *9: Salakos HS-6C (manufactured by Nisshin Oillio Group Co., Ltd.) *10: KP-578P (Shin-Etsu Chemical Co., Ltd.) *11: DOWSIL ES-5700 Formulation Aid (manufactured by Dow Chemical Japan Co., Ltd. / Dow Toray Co., Ltd.) *12: EMALEX GWIS-108 (manufactured by Nippon Emulsion Co., Ltd.) *13: NIKKOL SG-DTD620 (manufactured by Nikko Chemicals Co., Ltd.) *14: Finsolv TN (manufactured by Innospec Active Chemicals) *15: FineNEO-iPSE (manufactured by Nippon Fine Chemical Co., Ltd.) *16: NIKKOL Refined Olive Squalane (manufactured by Nikko Chemical Co., Ltd.) *17: Gransil PC-12 (manufactured by IMCD Japan LLC) *18: Eutanol G-JP (manufactured by BASF Japan Ltd.) *19: Cetiol SN-1 (manufactured by BASF Japan Ltd.) *20: Uvinul MC 80 (manufactured by BASF Japan Ltd.) *21: Uvinul A Plus Granular (manufactured by BASF Japan Ltd.) *22: Tinosorb S (manufactured by BASF Japan Ltd.) *23: NIKKOL HCO-80 (manufactured by Nikko Chemicals Co., Ltd.) *24: Zeoram A-4 (manufactured by Tosoh Corporation)

[0106] (1) Viscosity The oil-in-water emulsion composition obtained above was filled into a 60 ml glass standard bottle and allowed to stand for 24 hours in thermostatic baths set at 5°C, 30°C, and 40°C. After standing, the viscosity of the oil-in-water emulsion cosmetic was measured using a B-type rotational viscometer (manufactured by Brookfield). The viscosity measurement was performed using a No. 4 rotor at a rotation speed of 6 rpm for a measurement time of 1 minute.

[0107] (2) Stability against temperature changes The oil-in-water emulsion cosmetic obtained as described above was filled into a 60 ml glass standard bottle and left to stand for one month in a thermostatic bath set at 5° C. and 50° C. After standing, the oil-in-water emulsion cosmetic was placed on a glass plate and the presence or absence of aggregates when spread with a finger was confirmed. The evaluation was carried out according to the following criteria: If separation was observed during the preparation, the evaluation was deemed impossible.

[0108] [Evaluation criteria] AA (Excellent): No separation or aggregates observed, and no color change A (Good): No separation or agglomeration is observed, and there is a slight change in color. B (Acceptable): No separation is observed, but there are slight aggregates and color changes. C (Fail): Separation or large aggregates were observed

[0109] (3) Makeup durability Twenty panelists with expertise in cosmetics served as panelists. After washing their faces, they were allowed to stand for 15 minutes in a test room set at a room temperature of 22°C and a humidity of 65% to allow for acclimatization. The oil-in-water emulsion cosmetic obtained above was then applied to half of the panelists' faces, and no oil-in-water emulsion cosmetic was applied to the other half. A powder foundation prepared by the method described below and having the composition shown in Table 7 was then applied to the entire face. Eight hours after application, the makeup durability was evaluated. Evaluation was performed using visual observation with a mirror and images obtained with an evaluation device (VISIA Evolution, manufactured by Integral Co., Ltd.). Each evaluation was scored on a scale of 1 to 5, and a total score (out of 10) was calculated. An average was calculated from the total scores of the 20 panelists to perform a comprehensive evaluation.

[0110] [Evaluation criteria] 5 points: very good 4 points: Good 3 points: Neither 2 points: slightly poor 1 point: Defective

[0111] [comprehensive evaluation] AA (Excellent): Over 9.5 points A (Good): Over 9.0 points and under 9.5 points B (pass): Over 8.0 points and under 9.0 points C (impossible): 8.0 points or less

[0112] (Method of preparing powder foundation) A. Ingredients 1 to 12 were mixed uniformly in a super mixer. A uniform mixture of ingredients 13 to 16 was added to BA, dispersed uniformly, and crushed. The CB was filled into a container and compression molded to obtain a powder foundation.

[0113] [Table 7]

[0114] Details of the ingredients used in Table 7 are shown below. *1 HELIOS R10R (manufactured by Topy Industries Ltd.) *2 MP-40 (0.3% phospholipid treatment) (manufactured by Teika Co., Ltd.) *3 MZY-505M (manufactured by Teika Co., Ltd.)

[0115] The results shown in Tables 1 to 6 demonstrate that the oil-in-water emulsion cosmetics of Examples 1 to 33 have superior stability against temperature changes and cosmetic durability compared to the oil-in-water emulsion cosmetics of Comparative Examples 1 to 7. In particular, Example 11, which contained the volatile hydrocarbon oil isododecane as component (C), was even more excellent in makeup durability than Example 1. The average score for the evaluation of makeup durability of Example 11 was 9.75 points, which was slightly better than Example 1 (average score 9.60). Example 21, which contained two or more hydrophobic metal oxides with different hydrophobic treatments for component (D), was superior in stability against temperature changes and makeup durability. The average score for the makeup durability evaluation of Example 21 was 9.70 points, slightly better than Example 1 (average score 9.60). On the other hand, Comparative Example 1, which did not contain component (A) and was replaced with an (acrylates / alkyl acrylate (C10-30)) crosspolymer, had insufficient cosmetic durability. Comparative Example 2, which did not contain component (B) but instead contained hydroxypropylmethylcellulose, a straight-chain water-soluble polymer, showed insufficient makeup durability. Comparative Example 3, which did not contain component (D), had insufficient makeup durability. Comparative Example 4, which contained 30% or more of component (D), was unable to evaluate its stability against temperature changes due to poor emulsification. Comparative Example 5, which did not contain component (E), had poor dispersibility of component (D) and insufficient makeup retention. Comparative Examples 6 and 7, in which a high HLB surfactant was used instead of component (E), showed insufficient makeup durability.

[0116] [Example 34] Daytime serum A daytime beauty serum was prepared using the composition shown in Table 8 and the manufacturing method described below.

[0117] [Table 8] *25: DOWSIL 2503 Cosmetic Wax (manufactured by Dow Toray) *26: KSG-18 (Shin-Etsu Chemical Co., Ltd.) *27: TIMIRON SUPERSHEEN MP1001 (Merck Performance Materials) *28: FLAMENCO VIOLET (520C) (BASF Japan Ltd.) *29: Silicon KF-56 (Shin-Etsu Chemical Co., Ltd.)

[0118] (Manufacturing method) A. Heat 1 to 5 to 75°C and stir with a homogenizer at 5000 rpm for 5 minutes to prepare a uniform gel. B. 22 to 27 are stirred in a bead mill to obtain a dispersion. Mix CB and 6-21 and heat to 70°C. Add C to DA and emulsify with a homogenizer at 3000 rpm for 5 minutes. The ED is changed to 1000 rpm and cooled to 40°C. 28 to 31 were added to FE, cooled to 30°C, removed, degassed, and filled into a tube container to obtain a daytime beauty serum.

[0119] (evaluation) The viscosity change at high and low temperatures was suppressed, the stability against temperature changes was excellent, and the cosmetic lasted well and was not easily smudged.

[0120] [Example 35] Sunscreen Sunscreens were prepared using the compositions shown in Table 9 and the following manufacturing method.

[0121] [Table 9] *30:UVINUL T150 (BASF) *31: PARSOL SLX (manufactured by DSM) *32: NIKKOL HCO-60 (manufactured by Nikko Chemicals Co., Ltd.) *33:SXI-5 (Miyoshi Kasei Co., Ltd.) *34: KSG-16 (Shin-Etsu Chemical Co., Ltd.) (Manufacturing method) A. Heat 1 to 4 to 75°C and stir with a homogenizer at 5000 rpm for 5 minutes to prepare a uniform gel. B.14 to B.17 are stirred in a stone mill mixer to obtain a dispersion. Mix CB with 5 to 13 and heat to 70°C. Add C to DA and emulsify with a homogenizer at 3000 rpm for 5 minutes. The ED is changed to 1000 rpm and cooled to 40°C. 18 to 21 were added to FE, cooled to 30°C, removed, degassed and filled into a blown bottle to obtain a sunscreen.

[0122] (evaluation) The viscosity change at high and low temperatures was suppressed, the stability against temperature changes was excellent, and the cosmetic lasted well and was not easily smudged.

[0123] [Example 36] Foundation

[0124] [Table 10] *35: SH556 FLUID (Dow Toray) *36: PGQ TiO2 R250 (manufactured by Daito Kasei Kogyo Co., Ltd.) *37: MZY-505M (manufactured by Teika) *38: PGQ RED No. 216P (manufactured by Daito Kasei Kogyo Co., Ltd.) *39: PGQ YELLOW YP-1200P (manufactured by Daito Kasei Kogyo Co., Ltd.) *40: PGQ BLACK No.710P (manufactured by Daito Kasei Kogyo Co., Ltd.) *41: FLAMENCO RED 420C (BASF Japan Ltd.) *42: FLAMENCO BLUE 620C (BASF Japan Ltd.) *43: KSG-016F (Shin-Etsu Chemical Co., Ltd.) *44: K22-M40 (manufactured by Dai Nippon Kasei Co., Ltd.) (Manufacturing method) Heat A.1 to A.6 to 75°C and mix with a disperser mixer at 5000 rpm for 5 minutes to prepare a uniform gel. B.16 to 22 are processed in a three-roller mill to obtain a dispersion. Mix CB with 7-15 and heat to 70°C. Add C to DA and emulsify with a disperser mixer at 3000 rpm for 5 minutes. Cool the ED to 40°C. 23 to 29 were added to FE, cooled to 30°C, taken out, degassed, and filled into a dispenser container to obtain a foundation.

[0125] (evaluation) The viscosity change at high and low temperatures was suppressed, the stability against temperature changes was excellent, and the makeup lasted well and did not easily smudge. The makeup lasted well even when the powder foundation in Table 7 was not applied on top.

[0126] [Example 37] Color correction cream

[0127] [Table 11] *45: KF-549 (Shin-Etsu Chemical Co., Ltd.) *46: Plussize L-9716U (manufactured by Goo Chemical Industry Co., Ltd.) *47: NIKKOL HCO-10 (manufactured by Nikko Chemicals Co., Ltd.) *48: LIPIDURE-PMB(BG) (NOF Corporation)

[0128] (Manufacturing method) Heat A.1 to A.6 to 75°C and mix with a disperser mixer at 5000 rpm for 5 minutes to prepare a uniform gel. B.15 to 20 are processed in a three-roller mill to obtain a dispersion. Mix CB with 7-14 and heat to 70°C. Add C to DA and emulsify with a disperser mixer at 3000 rpm for 5 minutes. Cool the ED to 40°C. 21 to 26 were processed in a roller mill and added to FE together with 27 to 30, cooled to 30°C, removed, degassed and filled into a tube container to obtain a color correction cream.

[0129] (evaluation) Viscosity changes at high and low temperatures were suppressed, and the product had excellent stability against temperature changes, and the makeup lasted well and did not easily smudge. The makeup lasted well even when the powder foundation in Table 7 was not applied on top. The evaluation criteria for stability against temperature changes and makeup lasted well were both AA.

[0130] [Example 38] Color correction cream

[0131] [Table 12] *49: LIPIDURE-A (NOF Corporation) *50: MAR'VINA GLACIA DROPS NWG00s02 (Nippon Sheet Glass Co., Ltd.)

[0132] (Manufacturing method) Heat A.1 to A.6 to 75°C and mix with a disperser mixer at 5000 rpm for 5 minutes to prepare a uniform gel. B.16 to 20 are processed in a three-roller mill to obtain a dispersion. Mix CB with 7-15 and heat to 70°C. Add C to DA and emulsify with a disperser mixer at 3000 rpm for 5 minutes. Cool the ED to 40°C. 21 to 25 were treated in a roller mill and added to FE together with 26 to 29, cooled to 30°C, removed, degassed and filled into a dispenser container to obtain a color correction cream.

[0133] (evaluation) Viscosity changes at high and low temperatures were suppressed, and the product had excellent stability against temperature changes, and the makeup lasted well and did not easily smudge. The makeup lasted well even when the powder foundation in Table 7 was not applied on top. The evaluation criteria for stability against temperature changes and makeup lasted well were both AA.

Claims

1. The following components (A) to (E): (A) (A-1) A copolymer of (meth)acrylic acid or a (meth)acrylic acid alkyl ester and a (meth)acrylic acid (polyoxyethylene monoalkyl ether), and (A-2) a copolymer containing acryloyldimethyltaurine as a structural unit or a salt thereof (B) Branched chain polysaccharides (C) One or more liquid oils at 25°C selected from the group consisting of ester oils, hydrocarbon oils, and higher alcohols (D) Hydrophobized metal oxide: 7% by mass or more and 25% by mass or less (E) One or more selected from the group consisting of acrylic-silicone graft copolymers, polyhydroxystearic acid, and polyglycerin / alkyl-comodified silicones An oil-in-water emulsion cosmetic comprising:

2. 2. The oil-in-water emulsion cosmetic according to claim 1, wherein the content mass ratio of component (E) to component (D) (component (E) / component (D)) is 0.005 to 0.

25.

3. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the viscosity ratio (viscosity at 5°C / viscosity at 40°C) of the viscosity (mPa s) of the oil-in-water emulsion cosmetic at 5°C to the viscosity (mPa s) of the oil-in-water emulsion cosmetic at 40°C is 0.5 to 7.

0.

4. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein a content mass ratio of said component (D) to the total content of said component (A) and said component (B) (component (D) / (component (A)+component (B))) is 10 to 85.

5. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the component (B) is a polysaccharide having mannose and / or glucuronic acid as structural units.

6. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the ester oil of component (C) is one or more selected from the group consisting of alkyl benzoate (C12-C15), diisopropyl sebacate, and cetyl 2-ethylhexanoate.

7. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the hydrocarbon oil of component (C) comprises a volatile hydrocarbon oil.

8. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the hydrophobic treatment of component (D) is one or more treatments selected from the group consisting of silicone treatment, alkylalkoxysilane treatment, amino acid treatment, acylated amino acid treatment, fatty acid treatment, fatty acid ester treatment, and phospholipid treatment.

9. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the component (D) is a composite treatment of two or more types of hydrophobic treatment on the same metal oxide.

10. The oil-in-water emulsion cosmetic according to claim 1 or 2, comprising two or more hydrophobized metal oxides, each of which is subjected to a different hydrophobization treatment as the component (D).

11. 11. The oil-in-water emulsion cosmetic according to claim 10, comprising, as component (D), (D-1) a silicone-treated and / or alkylalkoxysilane-treated metal oxide, and (D-2) one or more metal oxides selected from the group consisting of amino acid-treated, acylated amino acid-treated, fatty acid-treated, fatty acid ester-treated, and phospholipid-treated metal oxides.

12. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the metal oxide of component (D) is one or more metal oxides selected from the group consisting of zinc oxide, titanium oxide, and iron oxide.

13. The oil-in-water emulsion cosmetic according to claim 1 or 2, further comprising a component (F) glittering powder.

14. 3. The oil-in-water emulsion cosmetic according to claim 1, further comprising a component (G) a silicone-based oil phase thickener and / or a silicone-based film-forming agent.

15. 3. The oil-in-water emulsion cosmetic according to claim 1, further comprising one or more nonionic surfactants other than component (E) having an HLB value of 12.0 to 16.

0.

16. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the viscosity of the oil-in-water emulsion cosmetic the day after storage at 40°C is 10,000 mPa·s or more.

17. 3. The oil-in-water emulsion cosmetic according to claim 1, wherein the oil-in-water emulsion cosmetic is a sunscreen cosmetic or a makeup cosmetic.

Images