Oil-in-water emulsion cosmetics

Abstract

To provide an oil-in-water emulsion cosmetic that offers both a refreshing feel and a rich texture, while suppressing stickiness after application.SOLUTION: An oil-in-water emulsion cosmetic comprises: component (A): a fatty acid triglyceride, which is solid at 25°C, where the fatty acid is a saturated fatty acid with a linear structure, component (B): di(phytosteryl / behenyl / 2-octyldodecyl) lauroyl glutamate and / or di(phytosteryl / 2-octyldodecyl) lauroyl glutamate, component (C): vegetable oil and fat with a melting point of 25-50°C, and component (D): water. The respective contents of component (A), component (B), and component (C) are controlled within a specific range. An oil component (E) that is liquid at 25°C may be included or not included. The content of component (E) is controlled to 10.0 mass% or less. An oil component (F) that is solid at 25°C, other than the components (A)-(C), may be included or not included. The content of component (F) is controlled to 5.0 mass% or less.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to an oil-in-water type emulsified cosmetic.

Background Art

[0002] As skin cosmetics used for moisturizing the skin, for example, emulsified cosmetics in the form of gels or creams are known (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Among the above emulsified cosmetics, generally, the gel type is excellent in "freshness", while the cream type has the characteristic of being excellent in "richness". However, usually, freshness and richness are in a trade-off relationship. When increasing the freshness as a gel, the richness is insufficient, and there is also a problem that it tends to be sticky after application. Furthermore, in order to increase the richness, it is necessary to blend a solid oil, but when increasing the richness as a cream, it becomes difficult to feel freshness. In addition, when increasing the richness, it has been difficult to suppress the stickiness derived from the solid oil after application.

[0005] Therefore, an object of the present invention is to provide an oil-in-water type emulsified cosmetic that can achieve both freshness and richness while suppressing stickiness after application.

Means for Solving the Problems

[0006] In order to solve the above problems, the inventors conducted diligent research and found that an oil-in-water emulsion cosmetic containing components (A) to (D) described below in specific proportions, and components (E) and (F) described below in specific proportions, can achieve both freshness and richness while suppressing stickiness after application. The present invention was completed based on these findings.

[0007] In other words, the present invention contains the following components (A), (B), (C), and (D), wherein the content of component (A) is 0.5 to 5.0% by mass, the content of component (B) is 0.3 to 2.0% by mass, and the content of component (C) is 0.5 to 5.0% by mass. The product contains or does not contain the following component (E), and the content of component (E) is 10.0% by mass or less. The present invention provides an oil-in-water emulsion cosmetic composition that contains or does not contain the following component (F), and in which the content of the above component (E) is 5.0% by mass or less. Component (A): A fatty acid triglyceride that is solid at 25°C and whose fatty acids are saturated fatty acids with a linear structure. Ingredient (B): Lauroyl glutamate di(phytosteryl / behenyl / 2-octyldodecyl) and / or Lauroyl glutamate di(phytosteryl / 2-octyldodecyl) Ingredients (C): Vegetable oil with a melting point of 25-50°C Ingredient (D): Water Ingredient (E): Oily component that is liquid at 25°C Ingredient (F): Oily components that are solid at 25°C, other than ingredients (A) to (C).

[0008] The above oil-in-water emulsion cosmetic composition further contains the following component (G), and preferably the content ratio of component (G) is 0.3 to 5.0% by mass. Ingredient (G): Nonionic surfactant

[0009] The above oil-in-water emulsion cosmetic composition further contains the following component (H), and preferably the content of component (H) is 0.3 to 3.0% by mass. Component (H): Water-soluble polymer [Effects of the Invention]

[0010] The oil-in-water emulsion cosmetic composition of the present invention achieves both a refreshing and rich texture while suppressing stickiness after application. [Modes for carrying out the invention]

[0011] Unless otherwise specified in this specification, "X~Y" representing a numerical range means "X or more and Y or less". Also, unless otherwise specified in this specification, the mass % representing the content of an ingredient is the value with the total mass of the oil-in-water emulsion cosmetic composition set to 100% by mass.

[0012] Furthermore, in this specification, "solid" at 25°C means that the substance is solid or semi-solid (paste-like) at 25°C and is not "liquid." Also, "liquid" means that when 50g of the sample is placed in a glass bottle with a radius of 2cm and a height of 7cm, and the glass bottle is inverted at a temperature of 25°C, the sample will drip from the glass bottle within 5 minutes immediately after inversion.

[0013] Furthermore, in this invention, "freshness" refers to a feeling of replenishment of moisture to the skin, achieved by experiencing a cooling sensation and a penetrating sensation (a feeling that the agent disappears as it is applied) during application. Furthermore, "richness" refers to a feeling of using a product that gives the sensation of applying a highly concentrated agent. Furthermore, "stickiness" refers to the viscous feeling experienced after the applied product has penetrated the skin.

[0014] [Oil-in-water emulsion cosmetic] The oil-in-water emulsion cosmetic of the present invention is solid at 25°C and contains at least a fatty acid triglyceride in which the fatty acid is a saturated fatty acid with a linear structure; di(phytosteryl / behenyl / 2-octyldodecyl) lauroyl glutamate and / or di(phytosteryl / 2-octyldodecyl) lauroyl glutamate; a vegetable oil that is solid at 25°C; and water.

[0015] In this specification, the above-mentioned "fatty acid triglycerides that are solid at 25°C and whose fatty acids are saturated fatty acids with a linear structure" may be referred to as "component (A)", the above-mentioned "lauroyl glutamate di(phytosteryl / behenyl / 2-octyldodecyl) and / or lauroyl glutamate di(phytosteryl / 2-octyldodecyl)" may be referred to as "component (B)", the above-mentioned "vegetable oils with a melting point of 25-50°C" may be referred to as "component (C)", and the above-mentioned "water" may be referred to as "component (D)". That is, the oil-in-water emulsion cosmetic composition of the present invention contains at least component (A), component (B), component (C), and component (D).

[0016] The oil-in-water emulsion cosmetic of the present invention may contain an oily component that is liquid at 25°C. The oil-in-water emulsion cosmetic of the present invention may contain an oily component that is solid at 25°C other than components (A) to (C). Furthermore, it is preferable that the oil-in-water emulsion cosmetic of the present invention contains a nonionic surfactant. It is preferable that the oil-in-water emulsion cosmetic of the present invention contains a water-soluble polymer. The oil-in-water emulsion cosmetic of the present invention may contain a polyhydric alcohol. In this specification, the above "oily component that is liquid at 25°C" may be referred to as "component (E)", the above "oily component that is solid at 25°C other than components (A) to (C)" may be referred to as "component (F)", the above "nonionic surfactant" may be referred to as "component (G)", the above "water-soluble polymer" may be referred to as "component (H)", and the above "polyhydric alcohol" may be referred to as "component (I)". The above oil-in-water emulsion cosmetic composition may contain components (E), (F), (G), (H), and (I), and may also contain components other than components (A) to (I).

[0017] <Ingredient (A)> Component (A) is solid at 25°C and is a fatty acid triglyceride in which the fatty acids are linear saturated fatty acids (i.e., a fatty acid triglyceride in which all three fatty acids are linear saturated fatty acids). Component (A) imparts a rich texture to the oil-in-water emulsion cosmetic while suppressing stickiness after application. Component (A) may be used alone or in combination of two or more types.

[0018] Examples of the saturated fatty acid having a linear structure include saturated fatty acids having a linear structure and 8 to 22 carbon atoms. Specific examples of the saturated fatty acid having a linear structure and 8 to 22 carbon atoms include caprylic acid, capric acid, lauric acid, behenic acid, myristic acid, palmitic acid, stearic acid, and the like.

[0019] Examples of component (A) include glyceryl tri (caprylic acid / capric acid / myristic acid / stearic acid), glyceryl tristearate, tribehenin (glyceryl tribehenate), glyceryl trimyristate, and the like. Among them, tribehenin and glyceryl tri (caprylic acid / capric acid / myristic acid / stearic acid) are preferred.

[0020] The content ratio of component (A) is not particularly limited, but is 0.5 to 5.0% by mass, preferably 0.8 to 3.5% by mass, and more preferably 1.0 to 2.5% by mass with respect to 100% by mass of the oil-in-water type emulsified cosmetic of the present invention. When the content ratio of component (A) is 0.5% by mass or more, it is possible to impart a richness to the oil-in-water type emulsified cosmetic and suppress stickiness after application. When the content ratio of component (A) is 5.0% by mass or less, it is possible to suppress the stickiness after application derived from component (A).

[0021] <Component (B)> Component (B) is di (phytosteryl / behenyl / 2-octyldodecyl) lauroyl glutamate and / or di (phytosteryl / 2-octyldodecyl) lauroyl glutamate. Component (B) can improve freshness while imparting a richness to the oil-in-water type emulsified cosmetic. Component (B) may be used alone or both may be used.

[0022] The content of component (B) is 0.3 to 2.0% by mass, preferably 0.4 to 1.8% by mass, and more preferably 0.5 to 1.5% by mass, based on 100% by mass of the oil-in-water emulsion cosmetic of the present invention. A content of 0.3% by mass or more of component (B) can impart a rich texture to the oil-in-water emulsion cosmetic while improving its freshness. A content of 2.0% by mass or less can suppress stickiness after application caused by component (B).

[0023] <Ingredient (C)> Component (C) is a vegetable oil with a melting point of 25-50°C. Component (C) is solid at 25°C. Component (C) can impart a rich texture to oil-in-water emulsion cosmetics. Component (C) may be used alone or in combination of two or more types.

[0024] Examples of component (C) include shea butter, mango butter (mango seed butter), and Astrocaryum murumuru seed butter.

[0025] The content of component (C) is 0.5 to 5.0% by mass, preferably 0.7 to 4.5% by mass, and more preferably 1.0 to 4.0% by mass, based on 100% by mass of the oil-in-water emulsion cosmetic of the present invention. A content of 0.5% by mass or more of component (C) can impart a rich texture to the oil-in-water emulsion cosmetic. A content of 5.0% by mass or less of component (C) can suppress stickiness after application caused by component (C).

[0026] <Ingredient (D)> Component (D) is water. Component (D) acts as a medium for forming an oil-in-water emulsion. Component (D) is not particularly limited, but purified water is preferred.

[0027] The content ratio of component (D) is preferably 40.0 to 95.0% by mass, more preferably 50.0 to 90.0% by mass, and even more preferably 60.0 to 85.0% by mass, based on 100% by mass of the oil-in-water emulsion cosmetic composition of the present invention.

[0028] <Ingredient (E)> Component (E) is an oily component that is liquid at 25°C. The oil-in-water emulsion cosmetic of the present invention may or may not contain component (E). When component (E) is included, the richness of the texture when the oil-in-water emulsion cosmetic is applied can be further improved. Also, in small amounts, stickiness can be further suppressed. Only one type of component (E) may be used, or two or more types may be used.

[0029] Component (E) is not particularly limited, but examples include hydrocarbon oils, higher alcohols, ester oils, animal and vegetable oils, silicone oils, and higher fatty acids, all of which are liquid at 25°C.

[0030] Examples of hydrocarbon oils that are liquid at 25°C include α-olefin oligomers, hydrogenated polyisobutene, isododecane, isohexadecane, (C13-15) alkanes, hydrogenated polydecene, light isoparaffins, light liquid isoparaffins, squalane (synthetic squalane, vegetable squalane), squalene, liquid paraffin (mineral oil), and liquid isoparaffins.

[0031] Examples of higher alcohols that are liquid at 25°C (for example, aliphatic alcohols with 12 to 24 carbon atoms) include isostearyl alcohol.

[0032] Examples of animal and vegetable oils that are liquid at 25°C include avocado oil, argan oil, olive oil, rice bran oil, soybean oil, corn oil, palm kernel oil, palm oil, castor oil, grape seed oil, kukui nut oil, jojoba oil, macadamia nut oil, crambe abyssinica seed oil, meadowfoam oil, and sunflower oil.

[0033] Examples of ester oils that are liquid at 25°C include ethyl oleate, isopropyl myristate, isopropyl palmitate, myristyl myristate, cetyl palmitate, 2-ethylhexyl palmitate, oleyl oleate, octyldodecyl myristate, octyldodecyl oleate, ethyl isostearate, isopropyl isostearate, propylene glycol isostearate, cetyl 2-ethylhexanoate, cetostearyl 2-ethylhexanoate, and glyceryl tri-2-ethylhexanoate. Examples include lyl, caprylic / capric triglyceride, glyceryl triisopalmitate, pentaerythritol tetra-2-ethylhexanoate, diisopropyl adipate, isocetyl octanoate, isostearyl octanoate, isocetyl isostearate, octyldodecyl isostearate, octyldodecyl dimethyloctanoate, isononyl isononanoate, pentaerythrityl tetraoctanoate, pentaerythrityl tetraisostearate, and polyglyceryl-10 decaisostearate.

[0034] Examples of liquid silicone oils at 25°C include dimethylpolysiloxane (for example, with a kinematic viscosity of 1.0 to 60,000 mm² at 25°C). 2 Examples include dimethylpolysiloxane (which is dimethylpolysiloxane), poly(oxyethylene-oxypropylene)methylpolysiloxane copolymer, cyclopentasiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, polyoxyethylene-methylpolysiloxane copolymer, aminoethylaminopropylmethylsiloxane-dimethylpolysiloxane copolymer, and dimethiconol. The silicone oil, which is liquid at 25°C, may be a volatile silicone oil or a non-volatile silicone oil.

[0035] Examples of higher fatty acids that are liquid at 25°C (for example, fatty acids with 8 to 22 carbon atoms) include isostearic acid and oleic acid.

[0036] The content of component (E) is 10.0% by mass or less, preferably 8.0% by mass or less, based on 100% by mass of the oil-in-water emulsion cosmetic composition of the present invention. By having a content of 10.0% by mass or less of component (E), stickiness derived from component (E) can be suppressed. Furthermore, there is no particular lower limit, but it may be 0% by mass (i.e., no component (E) is present), preferably 1.0% by mass or more, and more preferably 2.0% by mass or more. When the content of component (E) is 1.0% by mass or more, it is possible to more easily exhibit a rich feeling when applied.

[0037] <Ingredients (F)> Component (F) is an oily component that is solid at 25°C, other than components (A) to (C). The oil-in-water emulsion cosmetic of the present invention may or may not contain component (F). If component (F) is included, its presence can improve the richness of the oil-in-water emulsion cosmetic. Only one type of component (F) may be used, or two or more types may be used.

[0038] The component (F) is not particularly limited, but examples include waxes, hydrocarbon oils, higher alcohols, ester oils, higher fatty acids, and silicone oils, which are solid at 25°C.

[0039] Examples of waxes that are solid at 25°C include carnauba wax, candelilla wax, beeswax, rice bran wax, shellac wax, and whale wax.

[0040] Examples of hydrocarbon oils that are solid at 25°C include petrolatum, ceresin, ozokerite, paraffin, microcrystalline wax, polyethylene wax, and Fischer-Tropsch wax (synthetic wax).

[0041] Examples of higher alcohols that are solid at 25°C (for example, aliphatic alcohols with 12 to 24 carbon atoms) include cetyl alcohol (cetanol), stearyl alcohol, and behenyl alcohol.

[0042] Examples of ester oils that are solid at 25°C include hydrogenated castor oil hydroxystearate, dipentaerythrityl hexahydroxystearate, ethyl stearate, myristyl myristate, cholesteryl isostearate, hexa(hydroxystearate / stearate / rosinate)dipentaerythrityl, and tetra(hydroxystearate / isostearate)dipentaerythrityl.

[0043] Examples of solid high-grade fatty acids at 25°C (for example, fatty acids with 8 to 22 carbon atoms) include lauric acid, myristic acid, palmitic acid, and stearic acid.

[0044] Examples of silicone oils that are solid at 25°C include highly polymerized dimethicone and dimethiconol.

[0045] The content of component (F) is 5.0% by mass or less, preferably 1.0% by mass or less, based on 100% by mass of the oil-in-water emulsion cosmetic composition of the present invention. By having a content of component (F) of 5.0% by mass or less, the effects of components (A) to (C) can be fully exerted. The oil-in-water emulsion cosmetic composition of the present invention does not have to contain component (F) (i.e., the content of component (F) may be 0% by mass). If the oil-in-water emulsion cosmetic composition of the present invention contains component (F), the content of component (F) may be, for example, 0.3% by mass or more.

[0046] <Ingredients (G)> Component (G) is a nonionic surfactant. Component (G) acts as an emulsifier to form an oil-in-water emulsion. Component (G) may be used alone or in combination of two or more types.

[0047] Examples of component (G) include sorbitan fatty acid esters, glycerin fatty acid esters and their alkylene oxide adducts, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyalkylene alkylphenols, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkylphenyl formaldehyde condensates, polyoxyethylene sterols and their derivatives, polyoxyethylene lanolin and its derivatives, alkyl glucosides, polyoxyethylene beeswax derivatives, sugar esters, polyoxyethylene hydrogenated castor oil, and polyoxyethylene castor oil.

[0048] Examples of the above-mentioned sorbitan fatty acid esters include sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monopalmitate, sorbitan monolaurate, sorbitan trioleate, sorbitan tristearate, sorbitan sesquistearate, sorbitan sesquioleate, sorbitan sesquiisostearate, and sorbitan coconut oil fatty acid. Examples of alkylene oxide adducts of the above-mentioned sorbitan fatty acid esters include polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monoisostearate, polyoxyethylene sorbitan monococonut oil fatty acid, polyoxyethylene sorbitan tristearate, and polyoxyethylene sorbitan trioleate.

[0049] The above-mentioned glycerin fatty acid esters include both monoglycerin fatty acid esters and polyglycerin fatty acid esters. Examples of the above-mentioned monoglycerin fatty acid esters include glyceryl monocaprylate, glyceryl monocaprate, glyceryl monolaurate, glyceryl monomyristate, glyceryl monopalmitate, glyceryl monostearate, glyceryl monoisostearate, glyceryl monobehenate, glyceryl monooleate, glyceryl monoerucate, glyceryl sesquioleate, glyceryl distearate, glyceryl diisostearate, and glyceryl diarachinate. Examples of the above-mentioned polyglycerin fatty acid esters include polyglycerin fatty acid esters with a degree of polymerization of 2 to 10, such as diglyceryl monocaprylate, decaglyceryl monocaprylate, hexaglyceryl monocaprate, tetraglyceryl monolaurate, hexaglyceryl monolaurate, decaglyceryl monolaurate, poly(4-10)glyceryl monolaurate, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate, poly(2-10)glyceryl monostearate, diglyceryl monooleate, hexaglyceryl monooleate, diglyceryl sesquioleate, poly(2-10)glyceryl diisostearate, poly(6-10)glyceryl distearate, diglyceryl triisostearate, and poly(10)glyceryl tristearate. Furthermore, examples of alkylene oxide adducts of the above-mentioned glycerin fatty acid esters include polyoxyethylene glyceryl monostearate and polyoxyethylene glyceryl monooleate.

[0050] Examples of the above-mentioned polyoxyalkylene alkyl ethers include polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene polyoxypropylene lauryl ether, polyoxypropylene cetyl ether, polyoxypropylene isocetyl ether, polyoxypropylene stearyl ether, and polyoxypropylene oleyl ether.

[0051] The above polyoxyalkylene fatty acid esters include both polyoxyalkylene mono fatty acid esters and polyoxyalkylenedi fatty acid esters. Examples of the above polyoxyalkylene mono fatty acid esters include polyethylene glycol mono fatty acid esters such as polyethylene glycol monooleate, polyethylene glycol monostearate, and polyethylene glycol monolaurate; and propylene glycol mono fatty acid esters such as propylene glycol monostearate, propylene glycol monolaurate, and propylene glycol monooleate. Examples of the above polyoxyalkylenedi fatty acid esters include polyethylene glycol difatty acid esters such as polyethylene glycol dilaurate, polyethylene glycol dimyristate, polyethylene glycol dipalmitate, polyethylene glycol distearate, polyethylene glycol diisostearate, and polyethylene glycol dibehenate.

[0052] The alkyl glucosides mentioned above are not particularly limited, but include alkyl glucosides having an alkyl group with 12 to 22 carbon atoms. Examples include lauryl glucoside, myristyl glucoside, hexadecyl glucoside (cetyl glucoside), octadecyl glucoside (stearyl glucoside), cetearyl glucoside, arachidyl glucoside, coconut oil alkyl glucoside, and alkyl glucosides (12 to 22 carbon atoms) which are mixtures thereof.

[0053] The content of component (G) is not particularly limited, but is preferably 0.3 to 5.0% by mass, and more preferably 0.5 to 4.0% by mass, based on 100% by mass of the oil-in-water emulsion cosmetic composition of the present invention. When the content of component (G) is 0.3% by mass or more, the emulsion stability is further improved. When the content of component (G) is 5.0% by mass or less, stickiness after application caused by component (G) can be suppressed.

[0054] <Component (H)> Component (H) is a water-soluble polymer. The inclusion of component (H) can further enhance the freshness of the oil-in-water emulsion cosmetic. Component (H) may be used alone or in combination of two or more types.

[0055] Component (H) is not particularly limited, but examples include gelatin, alginate; polysaccharide polymers such as xanthan gum, guar gum, carrageenan, pectin, and locust bean gum; cellulose-based water-soluble polymers such as methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, and carboxymethylcellulose; carboxyvinyl polymers, alkyl-modified carboxyvinyl polymers, alkyl acrylate copolymers, (acrylates / steareth-20 methacrylate) copolymers, (acrylates / steareth-20 methacrylate) crosspolymers, (acrylates / beheneth-25 methacrylate) copolymers, (acrylates / vinyl neodecanoate) crosspolymers, (sodium acrylate / sodium acryloyldimethyl taurate) copolymers, (hydroxyethyl acrylate / sodium acryloyldimethyl taurate) copolymers, and acrylic water-soluble polymers such as polyacrylate crosspolymer-6. In particular, from the viewpoint of further improving emulsion stability, it is preferable that component (H) contains an acrylic water-soluble polymer.

[0056] The content of component (H) is preferably 0.3 to 3.0% by mass, and more preferably 0.5 to 1.5% by mass, based on 100% by mass of the oil-in-water emulsion cosmetic composition of the present invention. When the content of component (H) is 0.3% by mass or more, the freshness of the oil-in-water emulsion cosmetic composition can be improved. When the content of component (H) is 3.0% by mass or less, stickiness derived from component (H) can be further suppressed.

[0057] <Component (I)> Component (I) is a polyhydric alcohol. Component (I) can improve the absorption of oil-in-water emulsion cosmetics during application. It can also improve the moisturizing effect after application. Component (I) may be used alone or in combination of two or more types.

[0058] Examples of component (I) include glycols such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, and 1,2-decanediol; glycerin compounds such as glycerin, diglycerin, and polyglycerin; and sugar alcohols such as xylitol, trehalose, maltitol, mannitol, sorbitol, erythritol, arabitol, ribitol, galactitol, glucitol, and erythritol.

[0059] The content of component (I) is not particularly limited, but is preferably 2.0 to 25.0% by mass, and more preferably 5.0 to 20.0% by mass, based on 100% by mass of the oil-in-water emulsion cosmetic composition of the present invention. When the content of component (I) is 2.0% by mass or more, the absorption during application and the moisturizing feeling after application can be improved. When the content of component (I) is 25.0% by mass or less, stickiness after application can be further suppressed. Furthermore, the absorption during application as an oil-in-water emulsion cosmetic composition can be further improved.

[0060] Furthermore, the oil-in-water emulsion cosmetic composition of the present invention may contain other components besides the components (A) to (I) described above. These other components may include, for example, lower alcohols such as ethanol, surfactants other than component (G) (anionic surfactants, cationic surfactants, amphoteric surfactants, etc.), antioxidants, preservatives, cooling agents, blood circulation promoting agents, UV absorbers, plant extracts, fragrances, pH adjusters, etc., as appropriate depending on the purpose. Additionally, only one of these other components may be used, or two or more may be used.

[0061] The method for producing the oil-in-water emulsion cosmetic of the present invention is not particularly limited and can be produced by known methods. Examples of methods for producing the oil-in-water emulsion cosmetic of the present invention include adding the above-mentioned components and mixing them using a known mixing device such as a disper mixer or paddle mixer.

[0062] The oil-in-water emulsion cosmetic of the present invention is preferably a skin cosmetic, such as a moisturizing cosmetic, a wrinkle-improving cosmetic, a cleansing cosmetic, or a cosmetic used for massage. Among these, it is particularly preferably a moisturizing cosmetic. The properties of the oil-in-water emulsion cosmetic of the present invention are not particularly limited, but examples include creams, lotions, gels, and gel creams, with gel cream being particularly preferred.

[0063] The oil-in-water emulsion cosmetic composition of the present invention can be used, for example, as a cosmetic, quasi-drug, pharmaceutical, or general merchandise. The areas to which the oil-in-water emulsion cosmetic composition of the present invention is applied are not particularly limited, but examples include the face (forehead, around the eyes, corners of the eyes, cheeks, around the mouth, etc.) and the body (arms, elbows, back of the hands, fingertips, feet, knees, heels, neck, armpits, back, etc.). Among these, it is particularly preferred to use it on the face. [Examples]

[0064] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples. Unless otherwise specified, the amounts listed in the table are the amounts of each component (i.e., the amount of the active ingredient in each raw material) and are expressed in "mass%". Note that "SIMULGEL NS" and "SIMULGEL EG" are shown as the amounts in the total amount of raw materials.

[0065] Examples 1-12, Comparative Examples 1-6 Oil-in-water emulsion cosmetic compositions for the examples and comparative examples were prepared by conventional methods according to the compositions listed in Table 1 and subjected to the evaluation tests described below. The evaluation results are also shown in Table 1.

[0066] The details of the ingredients listed in Table 1 are as follows: <Ingredient (A)> Tri(caprylic / capric / myristic / stearic)glyceryl: Product name "Saracos 334", manufactured by Nisshin Oillio Group Co., Ltd. Tribehenin: Product name "Synchro Wax HR-C-FL-(JP)", manufactured by CRODA. <Ingredient (B)> Lauroyl glutamate di(octyldodecyl / phytosteryl / behenyl): Product name "Eldew PS-306R", manufactured by Ajinomoto Healthy Supply Co., Ltd. N-Lauroyl-L-Glutamate Di(Phytosteryl / 2-Octyldodecyl): Product name "Eldew PS-203", manufactured by Ajinomoto Healthy Supply Co., Ltd. <Ingredient (C)> Mango seed butter: Product name "CroPure Mango Butter-SO-(JP)", manufactured by CRODA, semi-solid, melting point 26-36°C Shea butter: Product name "Star Shea Butter refind", manufactured by IMCD Benelux BV, semi-solid, melting point 30-38°C <Ingredient (E)> Squalane: Product name "NIKKOL Sugar Squalane", manufactured by Nippon Surfactant Industry Co., Ltd. Jojoba seed oil: Product name "NIKKOL Jojoba Oil S", manufactured by Nippon Surfactant Industry Co., Ltd. (C15-19) Alkan: Product name "EMOGREEN L15", manufactured by SEPPIC SA. <Ingredients (F)> Behenyl alcohol: Product name "Behenyl Alcohol 2265", manufactured by Higher Alcohol Industry Co., Ltd. Microcrystalline wax: Product name "MULTIWAX W-835", manufactured by Sonneborn. <Ingredients (G)> Polyglyceryl-10 stearate Glyceryl stearate <Component (H)> SIMULGEL NS: Product name "SIMULGEL NS", manufactured by SEPPIC SA, contains (H) hydroxyethyl acrylate / sodium acryloyldimethyl taurate copolymer, (G) polysorbate 60 and sorbitan isostearate, (E) squalane, and (D) water. SIMULGEL EG: Product name "SIMULGEL EG", manufactured by SEPPIC SA, contains (Sodium Acrylate / Sodium Acryloyldimethyl Taurate) copolymer as component (H), polysorbate 80 and sorbitan oleate as component (G), isohexadecane as component (E), and water as component (D). Carbomer: Product name "CARBOPOL 980 POLYMER", manufactured by Lubrizol, carboxyvinyl polymer. <Component (I)> PG: Propylene glycol

[0067] [evaluation] Approximately 1.0 g of the oil-in-water emulsion cosmetic obtained in the examples and comparative examples was applied to the face by hand and blended in. Based on the feel during application, "freshness during application" and "richness during application" were evaluated according to the following criteria. In addition, "stickiness after application" was evaluated based on the feel of the skin by hand two minutes after application, according to the following criteria. Each evaluation was performed by three expert evaluators.

[0068] (1) Freshness upon application ◎(Excellent): Provides a cooling sensation and excellent penetration, and a very strong feeling of freshness. ○ (Good): A cooling and penetrating sensation is felt, and the refreshing feeling is clearly present, but the penetrating sensation is slightly weak. × (Poor): No cooling or penetrating sensation is felt, and it does not feel refreshing.

[0069] (2) Richness when applied ◎(Excellent): When applied, the resistance and thickness of the cosmetic (the feeling of the cosmetic being present between the hand and skin) are clearly felt, and the resistance is high, giving a strong sense of richness. ○ (Good): When applied, a noticeable resistance from the cosmetic and a sense of its thickness (the feeling of the cosmetic being present between the hand and skin) can be felt, and a rich, full-bodied feel can be clearly perceived. × (Poor): When applied, there is almost no resistance from the cosmetic product, nor is there any feeling of thickness from the cosmetic product (the sensation of the cosmetic product being present between the hand and the skin), and it does not feel rich or luxurious.

[0070] (3) Stickiness after application ◎ (Excellent): Almost no stickiness is felt, or none at all. ○ (Good): There is a slight stickiness, but it is not at a level that is unpleasant for practical use. × (Poor): It feels noticeably sticky and is unpleasant to use.

[0071] [Table 1]

[0072] The oil-in-water emulsion cosmetic composition of the example was found to achieve both a refreshing and rich feel while suppressing stickiness after application. On the other hand, when component (A) was not included, it was not possible to achieve a rich feel upon application or suppress stickiness after application (Comparative Example 4). When component (B) was not included, it was not possible to achieve a refreshing feel upon application (Comparative Examples 1 and 3). When component (C) was not included, it was not possible to achieve a rich feel upon application (Comparative Examples 2 and 3). Furthermore, when components (A) to (C) were included in excess, a refreshing feel upon application was not felt, and stickiness after application could not be suppressed (Comparative Example 5). In addition, when components (E) and (F) were included in excess, stickiness after application could not be suppressed (Comparative Example 6).

[0073] The following are examples of formulations of the oil-in-water emulsion cosmetic composition of the present invention (total amount is 100% by mass). [Table 2]

Claims

1. It contains the following components (A), (B), (C), and (D), wherein the content of component (A) is 0.5 to 5.0% by mass, the content of component (B) is 0.3 to 2.0% by mass, and the content of component (C) is 0.5 to 5.0% by mass. The following component (E) may or may not be included, and the content of component (E) is 10.0% by mass or less. An oil-in-water emulsion cosmetic containing or not containing the following ingredient (F), wherein the content of ingredient (F) is 5.0% by mass or less. Component (A): A fatty acid triglyceride that is solid at 25°C and whose fatty acids are saturated fatty acids with a linear structure. Ingredient (B): Lauroyl glutamate di(phytosteryl / behenyl / 2-octyldodecyl) and / or lauroyl glutamate di(phytosteryl / 2-octyldodecyl) Ingredients (C): Vegetable oil with a melting point of 25-50°C Component (D): water Ingredient (E): Oily component that is liquid at 25°C Ingredient (F): Oily components that are solid at 25°C, other than ingredients (A) to (C).

2. Furthermore, the oil-in-water emulsion cosmetic composition according to claim 1, wherein it contains the following component (G), and the content ratio of component (G) is 0.3 to 5.0% by mass. Ingredient (G): Nonionic surfactant

3. Furthermore, the oil-in-water emulsion cosmetic composition according to claim 1 or 2, wherein it contains the following component (H), and the content ratio of component (H) is 0.3 to 3.0% by mass. Component (H): Water-soluble polymer

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