JP2015089878A - Oil-in-water type skin cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-in-water type skin cosmetic which is used by applying on the skin, and can give a lasting cool feeling also after washing away with shower water or bath water.SOLUTION: The invention provides an oil-in-water type skin cosmetic containing the following component (A)-(C): (A) a nonionic surface active agent, (B) silicone oil except the component (A), and (C) 0.01 mass% or more to 2.5 mass% or less of l-menthol or a derivative thereof. The mass ratio ((C)/(A)) of the component (A) and the component (C) is 10 or more.

Description

  The present invention relates to an oil-in-water skin cosmetic.

  Conventionally, various skin cosmetics have been developed that can be applied to the skin after bathing or after showering to enhance the skin care effect and skin feel, or to provide a good feeling of use.

  As such skin cosmetics, for example, Patent Document 1 discloses a gel external composition containing water-insoluble components such as menthol in addition to ethanol, hydrophobically modified alkyl cellulose, carboxyvinyl polymer, and the like. The feeling is reduced. Patent Document 2 contains specific cationic surfactants and nonionic surfactants, oils that are liquid at room temperature, glycols and the like in specific amounts, and can also contain menthol and camphor. An oil-in-water emulsified cosmetic that retains transparency is disclosed. Further, Patent Document 3 discloses a body rinse agent containing a water-insoluble inorganic powder, an oily component that is liquid at 25 ° C., a water-soluble polymer, and the like in a specific amount, and a cooling agent for imparting a refreshing feeling. It is also described that 1-menthol and its derivatives can be contained as a sensitizer.

JP 2011-201834 A JP 2012-193172 A JP 2010-189366 A

  Although the cosmetics described in any of the above documents are described as containing menthol, there is no detailed examination about the effect brought about by menthol when used as a type of cosmetic that is washed off after being applied to the skin. As such, there is a possibility that sufficient coolness may not be exhibited for these types of cosmetics.

  Therefore, the present invention relates to an oil-in-water skin cosmetic that can sufficiently feel a cool feeling such as l-menthol even after the skin cosmetic is washed away.

  Therefore, the present inventor has made various studies and found that a nonionic surfactant, a silicone oil other than the nonionic surfactant, and a specific amount of l-menthol or a derivative thereof as a cooling sensation agent are used. The oil-in-water type skin cosmetic that can solve the above-mentioned problems has been found by making the agent and l-menthol or a derivative thereof into a specific quantitative ratio.

That is, the present invention includes the following components (A) to (C):
(A) a nonionic surfactant,
(B) Silicone oil other than component (A), and (C) 1-menthol or a derivative thereof 0.01% by mass or more and 2.5% by mass or less, and the mass ratio of component (A) to component (C) The present invention relates to an oil-in-water skin cosmetic wherein ((C) / (A)) is 10 or more.

  According to the oil-in-water skin cosmetic of the present invention, a cool feeling can be sufficiently felt even after being applied to the skin and washed away with shower water or bath water.

Hereinafter, the present invention will be described in detail.
The oil-in-water skin cosmetic of the present invention contains a nonionic surfactant as component (A). By containing this component (A), while each component is stably dispersed, the mass ratio of the component (C) described later to l-menthol or a derivative thereof is within a specific range. This can increase the sustainability of the product and improve the feeling of use.

  Examples of the nonionic surfactant of component (A) include polyoxyethylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene One or more selected from hardened castor oil, polyoxyethylene alkylamine, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyethylene glycol fatty acid ester, and polyether-modified silicone Can be mentioned. Among these components (A), polyoxyethylene hydrogenated castor oil and polyether-modified silicone are preferable from the viewpoint of enhancing the persistence of cool feeling while ensuring the adsorptivity of the component (C) described later to the skin.

  The silicone chain of the polyether-modified silicone may be either a straight chain or a branched chain. For example, a polyoxyethylene / methylpolysiloxane copolymer, a poly (oxyethylene / oxypropylene) methylpolysiloxane copolymer, Examples thereof include one or more selected from alkyl chain branched polyoxyethylene methyl polysiloxane copolymers, alkyl chain / silicone chain branched polyoxyethylene methyl polysiloxane copolymers, and the like. Among these polyether-modified silicones, a polyoxyethylene / methylpolysiloxane copolymer is preferred from the viewpoint of enhancing the persistence of cool feeling.

  In addition, the HLB of the component (A) is preferably 12 to 20, more preferably 13 to 18, from the viewpoint of enhancing the adsorptivity to the skin such as the component (C) and the sustainability of the cool feeling. The HLB is a value obtained by the Griffin equation.

The content of the component (A) is preferably 0.005% by mass or more in the oil-in-water skin cosmetic of the present invention, from the viewpoint of securing the dispersibility of each component and the sustainability of the cool feeling. Preferably it is 0.008 mass% or more, More preferably, it is 0.01 mass% or more. The content of the component (A) is preferably 0.1% by mass or less, more preferably 0.1% by mass or less, in the oil-in-water skin cosmetic of the present invention, from the viewpoint of maintaining a good feeling of use while enhancing a cool feeling. Is 0.08 mass% or less, more preferably 0.07 mass% or less. Further, the content of the component (A) is preferably 0.005 to 0.1% by mass, more preferably 0.008 to 0.08% by mass in the oil-in-water skin cosmetic of the present invention. Yes, and more preferably 0.01 to 0.07% by mass.
An anionic surfactant, a cationic surfactant, and an amphoteric surfactant, which are surfactants other than the component (A), may be contained, but from the viewpoint of applicability, they are preferably substantially not contained. In addition, that these surfactants are not substantially contained means that these surfactants are not contained except when mixed unavoidably.

  The oil-in-water skin cosmetic of the present invention contains a silicone oil other than the component (A) as the component (B). By containing such a component (B), the adsorbability on the skin of the component (C) is enhanced while ensuring good applicability that quickly and uniformly spreads the coating. It provides a feeling and can also give a good smooth feeling without stickiness.

  The silicone oil of component (B) is preferably a linear silicone oil that is a silicone oil having no surfactant activity other than component (A), and a non-modified silicone oil that is a cyclic silicone oil. Examples thereof include one or more selected from methylpolysiloxane, dimethylpolysiloxane, methylcyclopolysiloxane, diethylpolysiloxane, methylphenylpolysiloxane, decamethyltetrasiloxane, and decamethylcyclopentasiloxane. Among these components (B), one or two or more selected from methylpolysiloxane, dimethylpolysiloxane, methylcyclopolysiloxane and decamethylcyclopentasiloxane are included from the viewpoint of ensuring good coatability and usability. One or more selected from dimethylpolysiloxane and decamethylcyclopentasiloxane are more preferable.

  The content of the component (B) is preferably 0.5% by mass or more, more preferably 1%, in the oil-in-water skin cosmetic of the present invention, from the viewpoint of providing an immediate and lasting cool feeling. It is at least 2% by mass, more preferably at least 2% by mass. The content of the component (B) is preferably in the oil-in-water skin cosmetic of the present invention, from the viewpoint of achieving both a good cool feeling and a feeling of use such as a smooth feeling and no stickiness. It is 35 mass% or less, More preferably, it is 25 mass% or less, More preferably, it is 10 mass% or less. The content of the component (B) is preferably 0.5 to 35% by mass, more preferably 1 to 25% by mass, and further preferably 2 in the oil-in-water skin cosmetic of the present invention. -10 mass%.

  The oil-in-water skin cosmetic of the present invention contains 0.01% by mass or more and 2.5% by mass or less of l-menthol or a derivative thereof as the component (C). By containing such a component (C), a good cool feeling can be imparted. Examples of l-menthol derivatives include menthyl lactate, menthyl acetate, menthone and the like. These components (C), 1-menthol or derivatives thereof, can be used alone or in combination of two or more. Among them, l-menthol is preferred.

  The content of the component (C) is 0.01% by mass or more, preferably 0, in the oil-in-water skin cosmetic of the present invention, from the viewpoint of satisfactorily providing an immediate effect and a persistent cool feeling. 0.05% by mass or more, and more preferably 0.07% by mass or more. The content of the component (C) is 2.5% by mass or less, preferably 1.5% by mass or less, in the oil-in-water type skin cosmetic of the present invention, from the viewpoint of securing a good usability. Yes, more preferably 1% by mass or less. In addition, the content of the component (C) is 0.01 to 2.5% by mass in the oil-in-water skin cosmetic of the present invention, preferably 0.05 to 1.5% by mass, More preferably, it is 0.07-1 mass%.

  The mass ratio of the component (A) to the component (C) ((C) / (A)) is from the viewpoint of providing a good dry feeling and no sticky feeling while providing an immediate effect and a sustained cool feeling. 10 or more, preferably 20 or more, more preferably 30 or more, preferably 200 or less, more preferably 150 or less, and even more preferably 100 or less.

  The mass ratio of the component (A) to the component (B) ((B) / (A)) is preferable from the viewpoint of improving the applicability while ensuring good dispersibility of each component and exhibiting an excellent cool feeling. Is 50 or more, more preferably 100 or more, and still more preferably 200 or more. The mass ratio of the component (A) to the component (B) ((B) / (A)) is preferably from the viewpoint of ensuring the adsorptivity to the skin such as the component (C) and exhibiting an excellent cool feeling. It is 1000 or less, More preferably, it is 800 or less, More preferably, it is 600 or less.

  When applied to the skin, the oil-in-water type skin cosmetic of the present invention is well adsorbed on the skin together with the component (C) l-menthol or its derivative together with the action of other components, and gives a dry feeling to the skin. From the viewpoint of satisfactorily maintaining the cool feeling brought about by the component (C), it is preferable to further contain a water-insoluble powder as the component (D).

  Specific examples of the water-insoluble powder of component (D) include one or more selected from water-insoluble organic powders and water-insoluble inorganic powders. Examples of such water-insoluble organic powders, that is, water-insoluble organic powders include silicone powder, nylon, polystyrene, polyethylene, polypropylene, polytetrafluoroethylene, polyvinyl chloride, acrylic acid or acrylate polymer, methacrylic acid. Or 1 type, or 2 or more types chosen from powder, such as a methacrylic acid ester polymer, an acrylic acid / styrene copolymer, and a styrene / divinylbenzene copolymer, is mentioned. Among these water-insoluble organic powders, silicone powder is preferable from the viewpoint of enhancing the adsorptivity on the skin and imparting a smooth feeling.

  Silicone powder is powdered silicone resin or silicone rubber, and is not limited to the type of organopolysiloxane that forms the silicone resin and silicone rubber, the filler, the curing agent, the molar ratio of organic groups to silicon, and the like. The silicone powder is preferably substantially spherical. Examples of commercially available silicone powders include silicone powder (manufactured by Shin-Etsu Chemical Co., Ltd.), Tospearl (manufactured by Toshiba Silicone Co., Ltd.), trefil (manufactured by Toray Dow Corning Co., Ltd.), and the like.

  Examples of water-insoluble inorganic powders, ie, water-insoluble inorganic powders, include talc, sericite, mica, kaolin, bengara, clay, bentonite, diatomaceous earth, silica (silicic acid, anhydrous silicic acid), and magnesium silicate. , Mica, Magnesium oxide, Zinc oxide, Titanium oxide, Aluminum oxide, Aluminum sulfate, Alum, Calcium carbonate, Calcium sulfate, Barium sulfate, Magnesium sulfate, etc. 1 type (s) or 2 or more types chosen from what was modified | denatured automatically. Among these water-insoluble inorganic powders, a powder whose surface is not modified is preferable from the viewpoint of obtaining raw materials, one or more selected from talc, kaolin and silica are more preferable, and talc is more preferable. .

The shape of component (D) is not particularly limited, and may be any of a plate shape, a block shape, a scale shape, a spherical shape, etc. From the viewpoint of enhancing the skin feel, a powder such as a plate shape, a scale shape, a spherical shape is more preferable. Preferably, it is spherical.
The size of the component (D) is preferably one having an average particle size of 0.1 to 50 μm, from the viewpoint of improving applicability and providing a good cool feeling and enhancing the feeling of use such as a smooth feeling. A powder having a diameter of 1 to 20 μm is more preferable.

  The content of the component (D) is ensured in the oil-in-water type skin cosmetic of the present invention from the viewpoint of enhancing the feeling of use such as a smooth feeling while ensuring good adsorptivity on the skin and enhancing the cool feeling. Preferably it is 1.5 mass% or more, More preferably, it is 2 mass% or more, More preferably, it is 3 mass% or more. The content of the component (D) is the oil-in-water of the present invention from the viewpoint of maintaining good dispersibility in the cosmetic and enhancing the cool feeling by ensuring applicability such as spreadability on the skin. In the type skin cosmetic, it is preferably 40% by mass or less, more preferably 30% by mass or less, and still more preferably 20% by mass or less. The content of the component (D) is preferably 1.5 to 40% by mass, more preferably 2 to 30% by mass, and further preferably 3 in the oil-in-water skin cosmetic of the present invention. ˜20 mass%.

  The oil-in-water type skin cosmetic of the present invention is further improved as a component (E) from the viewpoint of providing a good dry feeling without stickiness while ensuring good applicability that spreads quickly on the skin and enhancing the cool feeling. It is preferable to contain polar oil which is liquid at 25 ° C. The liquid state indicates fluidity and includes a cream form or a paste form.

  Examples of the component (E) polar oil that is liquid at 25 ° C. include one or more selected from higher alcohols, higher fatty acids, and ester oils. Specifically, such higher alcohols are preferably higher alcohols having 12 to 28 carbon atoms such as lauryl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol and the like. As the higher fatty acid, specifically, a higher fatty acid having 12 to 28 carbon atoms is preferable. For example, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, behenic acid, isostearic acid, isopalmitic acid, isomyristin Examples include acid, linolenic acid, linoleic acid, ricinoleic acid, and oxystearic acid. As the ester oil, specifically, an ester of a higher fatty acid having 8 or more carbon atoms and an alcohol is preferable. For example, oleyl oleate, decyl oleate, propylene glycol dioleate, hexyldecyl dimethyloctanoate, butyl stearate, palmitic acid Isopropyl, diethyl phthalate, isopropyl myristate, octyldodecyl myristate, myristyl myristate, ethylene glycol monostearate, propylene glycol monostearate, hexyl laurate, cetyl 2-ethylhexanoate, cholesteryl ester, monoisostearyl glyceryl Examples include ether, oleic acid monoglyceride, sorbitan sesquioleate, and sorbitan monooleate.

  Among these components (E), higher alcohols are preferred from the viewpoint of ensuring good coatability and enhancing the adsorptivity to the skin of component (C) and the like, and providing an excellent cooling feeling. Cetyl alcohol, stearyl One or more selected from alcohol and oleyl alcohol are more preferable, and oleyl alcohol is more preferable.

  The content of the component (E) is preferably 0.01% by mass or more, more preferably in the oil-in-water skin cosmetic of the present invention, from the viewpoint of ensuring good coatability and enhancing cool feeling. It is 0.015 mass% or more, More preferably, it is 0.02 mass% or more. The content of the component (E) is preferably 15% by mass or less in the oil-in-water type skin cosmetic of the present invention, from the viewpoint of satisfactorily maintaining a feeling of use such as a feeling of smoothness and no stickiness. Preferably it is 10 mass% or less, More preferably, it is 5 mass% or less. In addition, the content of the component (E) is preferably 0.01 to 15% by mass, more preferably 0.015 to 10% by mass, and still more preferably in the oil-in-water skin cosmetic of the present invention. Is 0.02-5 mass%.

  The oil-in-water skin cosmetic of the present invention forms a gel phase exhibiting an appropriate viscosity and effectively embeds the component (C), while the gel phase quickly collapses during application and spreads uniformly. From the viewpoint of releasing (C) and spreading to every corner of the area where component (C) is applied and improving both the immediate effect and sustainability of the cool feeling, it further contains a water-soluble polymer of component (F). It is preferable.

  Component (F) is preferably one or more selected from alkyl-modified carboxyvinyl polymers and carboxyvinyl polymers. Examples of the alkyl-modified carboxyvinyl polymer include an alkyl acrylate copolymer and an acrylic acid / alkyl methacrylate copolymer, and an acrylic acid / alkyl methacrylate copolymer is preferable. Examples of the alkyl-modified carboxyvinyl polymer include alkyl acrylate copolymers such as Aculin 33 (Rohm and Haas Japan); Pemlen TR-1, Pemlen TR-2, Carbopol 1382, Carbopol ETD2020 and the like ( Commercial products such as acrylic acid / alkyl methacrylate copolymers such as Lubrizol) can be used.

  The carboxyvinyl polymer preferably has a weight average molecular weight of 100,000 to 10,000,000, more preferably 500,000 to 5,000,000. As such carboxyvinyl polymer, for example, commercially available products such as Carbopol 980, Carbopol 981, and Carbopol 934 (manufactured by Lubrizol) can be used.

  Among these, as the component (F), an alkyl-modified carboxyvinyl polymer is preferable from the viewpoint of improving the applicability to wet skin, and from the viewpoint of providing an immediate effect and a persistent cool feeling. It is more preferable to use a modified carboxyvinyl polymer and a carboxyvinyl polymer in combination.

  The content of the component (F) is preferably 0.01% by mass or more in the oil-in-water type skin cosmetic of the present invention from the viewpoint of improving applicability and providing an immediate effect and lasting cooling feeling. More preferably, it is 0.03 mass% or more, More preferably, it is 0.05 mass% or more. The content of the component (F) is preferably 10% by mass or less, more preferably in the oil-in-water skin cosmetic of the present invention, from the viewpoint of maintaining an appropriate viscosity and ensuring good coatability. It is 7 mass% or less, More preferably, it is 5 mass% or less. Further, the content of the component (F) is preferably 0.01 to 10% by mass, more preferably 0.03 to 7% by mass, and still more preferably in the oil-in-water skin cosmetic of the present invention. Is 0.05-5 mass%.

The oil-in-water type skin cosmetic of the present invention has a viscosity at 25 ° C. of preferably 5,000 to 40,000 mPa · s from the viewpoint of imparting a good coating property and ensuring an immediate effect and a sustained cool feeling. More preferably, it is 7500-35000 mPa * s, More preferably, it is 10000-30000 mPa * s.
The viscosity of the oil-in-water skin cosmetic was measured using a B-type digital viscometer at 25 ° C., a rotation speed of 12 rpm, a holding time of 60 s, and a rotor No. It can be measured under the condition of M4.

  The oil-in-water skin cosmetic of the present invention preferably contains a solvent from the viewpoint of satisfactorily dispersing each of the above components. The solvent is preferably water and may contain a lower alcohol such as ethanol. The water content is preferably 23% by mass or more, more preferably in the oil-in-water skin cosmetic of the present invention, from the viewpoint of ensuring uniform dispersion of each component and imparting good coatability. It is 35 mass% or more, More preferably, it is 50 mass% or more. The water content is preferably 95% by mass or less, more preferably 90% by mass or less, in the oil-in-water skin cosmetic of the present invention, from the viewpoint of securing a good feeling of use such as a smooth feeling. More preferably, it is 85% by mass or less. The water content in the oil-in-water skin cosmetic of the present invention is preferably 23 to 95% by mass, more preferably 35 to 90% by mass, and further preferably 50 to 85% by mass. is there. When ethanol is used as the solvent, the content of ethanol is preferably 0.1 to 40% by mass, more preferably 0.7 to 30% by mass, and still more preferably in the oil-in-water skin cosmetic of the present invention. 3 to 15% by mass.

  Furthermore, the oil-in-water skin cosmetic of the present invention contains a moisturizing ingredient, anti-inflammatory agent, whitening agent, UV care agent, antiseptic agent, antiseptic, antiperspirant, perfume and the like as long as the effects of the present invention are not impaired. It can also be contained. Moreover, although the oil-in-water skin cosmetic of this invention may contain oil-based components other than a component (A), (B), (C) and (E), from a viewpoint of improving the sustainability of a cool feeling. It is preferable that oils and fats and waxes are not substantially contained. Oils and fats refer to triacylglycerols or diacylglycerols such as vegetable oils and animal oils, and waxes refer to beeswax, carnauba wax, whale wax, lanolin and the like. The phrase “substantially free of these oils and waxes” means that these oils and fats and waxes are not included, unless they are inevitably mixed.

  The oil-in-water type skin cosmetic of the present invention can be produced by mixing the above components according to a conventional method.

  The oil-in-water skin cosmetic of the present invention is a cosmetic for rinsing after being applied to the skin, preferably the skin of the body other than the head, for example, lightly rinsing with shower water or bath water after application, a body rinse agent Can be used as Therefore, it can be suitably used as a body rinse agent for wet skin.

  As a method of using the oil-in-water skin cosmetic of the present invention as a body rinsing agent, a method of rinsing with water such as bath water or shower water after applying to the skin and towel drying is preferable. It may be applied directly to dry skin, but if applied to wet skin after showering or bathing, the body rinse agent will not become uneven and spreads well on the skin. Is more preferable. As an application method, the oil-in-water type skin cosmetic composition of the present invention may be applied directly to dry skin or wet skin with a hand or a jig, and may be stretched or applied to a part of the skin and then shower water. It may be spread by applying water such as bath water.

  When the oil-in-water type skin cosmetic of the present invention is applied to the skin, the above component (C) remains on the skin in a sufficient amount even if it is well wetted and spreads on the skin and rinsed with bath water or shower water. A feeling can be given to the skin instantaneously and for a long time.

In relation to the embodiment described above, the present invention further discloses the following oil-in-water skin cosmetics.
[1] The following components (A) to (C):
(A) a nonionic surfactant,
(B) Silicone oil other than component (A), and (C) 1-menthol or a derivative thereof 0.01% by mass or more and 2.5% by mass or less, and the mass ratio of component (A) to component (C) An oil-in-water skin cosmetic wherein ((C) / (A)) is 10 or more.
[2] Component (A) is preferably polyoxyethylene alkyl ether, polyoxyalkylene alkenyl ether, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, poly One or more selected from oxyethylene alkylamine, polyglycerin fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene polyoxypropylene alkyl ether, polyethylene glycol fatty acid ester, and polyether-modified silicone, more preferably [1] The oil-in-water skin cosmetic according to [1], which is polyoxyethylene hydrogenated castor oil or polyether-modified silicone.
[3] The oil-in-water skin cosmetic according to the above [1] or [2], wherein the HLB of the component (A) is preferably 12 to 20, and more preferably 13 to 18.
[4] Component (A) is preferably polyether-modified silicone, more preferably polyoxyethylene / methylpolysiloxane copolymer, poly (oxyethylene / oxypropylene) methylpolysiloxane copolymer, alkyl chain branching Type polyoxyethylene methyl polysiloxane copolymer, alkyl chain / silicone chain branched type polyoxyethylene methyl polysiloxane copolymer, or more preferably polyoxyethylene / methyl polysiloxane copolymer. The oil-in-water skin cosmetic according to any one of the above [1] to [3], which is a polymer.
[5] The content of component (A) is preferably 0.005% by mass or more, more preferably 0.008% by mass or more, still more preferably 0.01% by mass or more, and preferably 0 The oil-in-water skin cosmetic according to any one of the above [1] to [4], which is not more than 1% by mass, more preferably not more than 0.08% by mass, and further preferably not more than 0.07% by mass.

[6] The component (B) is preferably a non-modified silicone oil that is a linear silicone oil and a cyclic silicone oil other than the component (A), more preferably methylpolysiloxane, dimethylpolysiloxane, methylcyclo One or more selected from polysiloxane, diethylpolysiloxane, methylphenylpolysiloxane, decamethyltetrasiloxane, decamethylcyclopentasiloxane, more preferably methylpolysiloxane, dimethylpolysiloxane, methylcyclopolysiloxane, and [1] to [5], which are one or more selected from decamethylcyclopentasiloxane, and more preferably one or more selected from dimethylpolysiloxane and decamethylcyclopentasiloxane. Any one underwater Type skin cosmetics.
[7] The content of component (B) is preferably 0.5% by mass or more, more preferably 0.6% by mass or more, still more preferably 1.5% by mass or more, and preferably 35%. The oil-in-water skin cosmetic according to any one of the above [1] to [6], which is not more than mass%, more preferably not more than 25 mass%, and still more preferably not more than 10 mass%.
[8] The mass ratio of component (A) to component (B) ((B) / (A)) is preferably 50 or more, more preferably 100 or more, further preferably 200 or more, preferably Is an oil-in-water skin cosmetic according to any one of the above [1] to [7], which is 1000 or less, more preferably 800 or less, and even more preferably 600 or less.

[9] The above [1] to [8], wherein the component (C) is preferably one or more selected from 1-menthol, menthyl lactate, menthyl acetate, and menthone, and more preferably 1-menthol. Any one of oil-in-water type skin cosmetics.
[10] The content of the component (C) is preferably 0.05% by mass or more, more preferably 0.07% by mass or more, preferably 1.5% by mass or less, more preferably 1%. The oil-in-water skin cosmetic according to any one of the above [1] to [9], which is not more than mass%.
[11] The mass ratio ((C) / (A)) of the component (A) to the component (C) is preferably 20 or more, more preferably 30 or more, preferably 200 or less, more preferably. The oil-in-water type skin cosmetic according to any one of the above [1] to [10], wherein is not more than 150, more preferably not more than 100.

[12] Furthermore, it is preferable to contain a water-insoluble powder of component (D), and component (D) is preferably silicone powder, nylon, polystyrene, polyethylene, polypropylene, polytetrafluoroethylene, polyvinyl chloride, acrylic Acid or acrylic acid ester polymer, methacrylic acid or methacrylic acid ester polymer, acrylic acid / styrene copolymer, and styrene / divinylbenzene copolymer, talc, sericite, mica, kaolin, bengara, clay, bentonite, diatomaceous earth , Silica (silicic acid, anhydrous silicic acid), magnesium silicate, mica, magnesium oxide, zinc oxide, titanium oxide, aluminum oxide, aluminum sulfate, alum, calcium carbonate, calcium sulfate, barium sulfate, magnesium sulfate powder, And these The oil-in-water according to any one of [1] to [11], which is one or more selected from those obtained by chemically modifying the powder surface with a silane coupling agent or the like, and more preferably a silicone powder. Type skin cosmetics.
[13] The content of component (D) is preferably 1.5% by mass or more, more preferably 2% by mass or more, still more preferably 3% by mass or more, and preferably 40% by mass or less. The oil-in-water skin cosmetic according to [12], which is more preferably 35% by mass or less, and further preferably 25% by mass or less.

[14] Furthermore, it is preferable to contain a polar oil that is liquid at 25 ° C. of component (E), and component (E) is preferably one or more selected from higher alcohols, higher fatty acids, and ester oils. More preferably, one or more selected from higher alcohols having 12 to 28 carbon atoms, higher fatty acids having 12 to 28 carbon atoms and higher fatty acids having 8 or more carbon atoms and esters of alcohols, and more preferably higher The oil-in-water skin cosmetic according to any one of the above [1] to [13], which is alcohol.
[15] The content of the component (E) is preferably 0.01% by mass or more, more preferably 0.015% by mass or more, further preferably 0.02% by mass or more, preferably 15 [14] The oil-in-water skin cosmetic according to [14], which is not more than mass%, more preferably not more than 10 mass%, still more preferably not more than 5 mass%.

[16] Furthermore, it is preferable that the component (F) contains a water-soluble polymer, and the component (F) is preferably one or more selected from alkyl-modified carboxyvinyl polymers and carboxyvinyl polymers. [1] Oil-in-water skin cosmetic according to any one of [15].
[17] The above-mentioned [16], wherein the alkyl-modified carboxyvinyl polymer is preferably an alkyl acrylate copolymer, an acrylic acid / alkyl methacrylate copolymer, and more preferably an acrylic acid / alkyl methacrylate copolymer. Oil-in-water skin cosmetics.
[18] The oil-in-water skin make-up according to [16] or [17], wherein the carboxyvinyl polymer preferably has a weight average molecular weight of 100,000 to 10 million, more preferably 500,000 to 5,000,000. Fee.
[19] The oil-in-water skin cosmetic according to any one of [16] to [18], wherein the water-soluble polymer of component (F) is preferably a combination of an alkyl-modified carboxyvinyl polymer and a carboxyvinyl polymer.
[20] The content of component (F) is preferably 0.01% by mass or more, more preferably 0.03% by mass or more, still more preferably 0.05% by mass or more, and preferably 10%. The oil-in-water skin cosmetic according to any one of the above [16] to [19], which is not more than mass%, more preferably not more than 7 mass%, and still more preferably not more than 5 mass%.

[21] Any of the above [1] to [20], wherein the viscosity at 25 ° C is preferably 5000 to 40000 mPa · s, more preferably 7500 to 35000 mPa · s, and further preferably 10,000 to 30000 mPa · s. Or 1 oil-in-water skin cosmetic.
[22] The water content is preferably 23% by mass or more, more preferably 35% by mass or more, still more preferably 50% by mass or more, preferably 95% by mass or less, more preferably The oil-in-water skin cosmetic according to any one of [1] to [21], which is 90% by mass or less, and more preferably 85% by mass or less.

[23] The oil-in-water skin cosmetic according to any one of the above [1] to [22] for use after rinsing after being applied to the skin.
[24] The oil-in-water skin cosmetic according to any one of the above [1] to [23] for use after rinsing after being applied to wet skin.
[25] A method for imparting cooling sensation by applying the oil-in-water skin cosmetic according to any one of [1] to [24] above to wet skin, and then rinsing with water.
[26] The following components (A) to (C):
(A) a nonionic surfactant,
(B) Silicone oil other than component (A), and (C) 1-menthol or a derivative thereof 0.01% by mass or more and 2.5% by mass or less, and the mass ratio of component (A) to component (C) A body rinse agent for wet skin, wherein ((C) / (A)) is 10 or more.

  Hereinafter, the present invention will be specifically described based on examples. In addition, unless otherwise indicated in a table | surface, content of each component shows the mass%.

[Examples 1 to 10, Comparative Examples 1 to 3]
Each cosmetic was prepared according to the formulation shown in Table 1, and measured and evaluated by the following methods.
The results are shown in Table 1.

<< Viscosity at 25 ° C >>
The viscosity of the obtained cosmetic was measured using a B-type digital viscometer (TOKI SANGYO) under the conditions of 25 ° C., rotor M4, rotation speed 12 rpm, and holding time 60 s.

《Cool feeling》
Three professional panels picked up 1g of the obtained cosmetic, applied to the wet forearm after shower, rinsed with warm water at 40 ° C, and the cool sensation felt on the skin when 10 minutes passed after rinsing. Was evaluated according to the following criteria, and an average value of three persons was used as an evaluation value. Next, the smooth feeling, non-stickiness and applicability felt on the skin were similarly evaluated according to the following criteria.
4: Feels a very pleasant cool feeling 3: Feels a comfortable cool feeling 2: Does not feel a very cool feeling 1: Does not feel a cool feeling, or feels too cool and uncomfortable

《Smooth feeling》
4: Feel very comfortable 3: Feel comfortable 2: Feel a little 1: Feel almost free

《No stickiness》
4: Not sticky at all 3: Not sticky 2: Not sticky 1: Feels slightly sticky

<Applicability>
The applicability when 1 g of the obtained cosmetic was taken and applied to a wet forearm after shower was evaluated according to the following criteria.
4: Easy to spread very smoothly 3: Easy to spread smoothly 2: Easy to spread moderately 1: Not easy to spread

  According to the results of Table 1, it can be seen that the cosmetics of the examples can exhibit a sufficient cool feeling even after being applied to the skin and washed away, as compared with the comparative examples.

Claims (12)

The following components (A) to (C):
(A) a nonionic surfactant,
(B) Silicone oil other than component (A), and (C) 1-menthol or a derivative thereof 0.01% by mass or more and 2.5% by mass or less, and the mass ratio of component (A) to component (C) An oil-in-water skin cosmetic wherein ((C) / (A)) is 10 or more.   The oil-in-water skin cosmetic according to claim 1, wherein the mass ratio ((B) / (A)) of the component (A) to the component (B) is 50 or more and 1000 or less.   The oil-in-water type skin cosmetic according to claim 1 or 2, wherein the viscosity at 25 ° C is 5000 to 40000 mPa · s.   Furthermore, the oil-in-water type skin cosmetic of any one of Claims 1-3 which contains 0.01 mass% or more and 2.5 mass% or less of the water-soluble polymer of a component (F).   The oil-in-water skin cosmetic according to any one of claims 1 to 4, wherein the component (A) is a polyether-modified silicone.   Content of a component (A) is 0.005 mass% or more and 0.1 mass% or less, The oil-in-water type skin cosmetic of any one of Claims 1-5.   Content of a component (B) is 0.5 to 35 mass%, The oil-in-water type skin cosmetic of any one of Claims 1-6.   Furthermore, oil-in-water type skin cosmetics of any one of Claims 1-7 which contain 0.01 mass% or more and 15 mass% or less of liquid polar oils at 25 degreeC of a component (E).   The oil-in-water skin cosmetic according to claim 8, wherein the component (E) is one or more selected from higher alcohols, higher fatty acids and ester oils.   Furthermore, the oil-in-water type skin cosmetic of any one of Claims 1-9 containing 1.5 mass% or more and 40 mass% or less of the water-insoluble powder of a component (D).   The oil-in-water skin cosmetic according to claim 10, wherein component (D) is silicone powder.   The oil-in-water type skin cosmetic according to any one of claims 1 to 11, which is used after rinsing after being applied to the skin.