CN114040747A

CN114040747A - Oil-in-water type emulsion cosmetic

Info

Publication number: CN114040747A
Application number: CN202080046490.2A
Authority: CN
Inventors: 小河颂子; 佐藤由纪子; 池田智子
Original assignee: Shiseido Co Ltd
Current assignee: Shiseido Co Ltd
Priority date: 2019-07-01
Filing date: 2020-06-26
Publication date: 2022-02-11
Anticipated expiration: 2040-06-26
Also published as: CN114040747B; WO2021002285A1; JPWO2021002285A1; JP7522736B2

Abstract

The purpose of the present invention is to provide a cosmetic that is an oil-in-water emulsion cosmetic, that can stably hold a powder component having a soft-focus effect, and that has an effect not found in conventional correction cosmetics, such as imparting a firm feel. The present invention provides an oil-in-water type emulsion cosmetic characterized by containing: (A)1 to 10 mass% of higher alcohol, (B)2 to 20 mass% of nonionic surfactant, (C) silicone elastomer powder, (D) coloring material, (E) water, and (F) oil, wherein the (D) coloring material contains (D1) coloring pigment containing 0.5 mass% or more of iron oxide.

Description

Oil-in-water type emulsion cosmetic

Technical Field

The present invention relates to an oil-in-water type emulsion cosmetic. More particularly, the present invention relates to an oil-in-water emulsion cosmetic which has an excellent effect of correcting a defect of masking the skin and can be applied to the skin in a soft and firm manner.

Background

The "cosmetic effect" which is one of important effects required for makeup cosmetics such as foundation includes skin color adjustment and unevenness correction of pores. Conventional foundations and the like contain a component having a high refractive index for correcting skin color and a powder component that makes unevenness of skin inconspicuous by a light diffusion effect (patent document 1).

In order to blend the powder component having the soft-focus effect as described above into a product and continuously exert the effect, it is necessary to uniformly disperse the powder component in the cosmetic. In particular, although oil-in-water emulsion cosmetics have an advantage of imparting a moist touch when applied to the skin, it is difficult to stably retain a powder component having a hydrophobic surface.

Patent document 2 describes an aqueous cosmetic product obtained by blending a hydrophobic powder in an aqueous phase into which an α -gel structure is introduced, and patent document 3 describes an oil-in-water emulsion cosmetic product in which an α -gel structure is introduced in an aqueous phase, and a specific sugar ester is blended in an oil phase and a liquid higher fatty acid having a powder dispersion effect is blended, thereby improving the stability of the hydrophobic powder in the inner oil phase. The cosmetics described in these documents exhibit a correction effect based on the powder components to be blended, but if the amount of the powder components is increased, it is difficult to maintain stability, and the hydrophobic powder dispersed in the internal oil phase may bleed out to the external water phase, causing color streaks. In addition, these cosmetics cannot impart a firm feeling to the skin.

A water-soluble polymer having a film-forming property, such as polyvinyl alcohol, has been conventionally blended in cosmetics for imparting a firm feeling to the skin (patent document 4). The film formed of these water-soluble polymers has the effect of spreading fine wrinkles and imparting a firm feeling to the skin. However, the coating film may become hard with time or may be strained.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2011-201829

Patent document 2: WO2017/150519 publication

Patent document 3: japanese patent No. 5913411

Patent document 4: japanese patent laid-open publication No. 2011-148716

Disclosure of Invention

Problems to be solved by the invention

The present invention aims to provide an oil-in-water emulsion cosmetic which stably retains a powder component having a soft-focus effect, has excellent feeling in use and skin correction effects, and has an effect not possessed by conventional correction cosmetics such as imparting a firm feeling by making fine wrinkles and sagging inconspicuous.

Means for solving the problems

The present inventors have conducted intensive studies to solve the above problems, and as a result, have found that: the present inventors have found that the above problems can be solved by blending a silicone elastomer powder with an oil-in-water emulsion cosmetic in which an α -gel structure is introduced into an aqueous phase, while adjusting the blending amount of the components constituting the α -gel to a specific range, and have completed the present invention.

That is, the present invention provides an oil-in-water type emulsion cosmetic comprising:

(A)1 to 10 mass% of a higher alcohol,

(B)2 to 20 mass% of a nonionic surfactant,

(C) Organosilicon elastomer powder,

(D) A coloring material,

(E) Water, and

(F) the oil component is the mixture of oil component,

the coloring material (D) includes a coloring pigment (D1) containing an iron oxide in an amount of 0.5 mass% or more.

ADVANTAGEOUS EFFECTS OF INVENTION

The oil-in-water type emulsion cosmetic of the present invention contains a larger amount of α -gel-constituting components than the conventional ones, and these components form lamellar aggregates (α -gels) in which water is held between hydrophilic portions of lamellar crystals together with water, thereby thickening the whole cosmetic system to give a gel having flexibility and appropriate hardness. Therefore, the emulsion stability is significantly improved, and the state in which the compounded powder components are uniformly dispersed can be maintained. On the other hand, by including the silicone elastomer powder having a soft-focus effect as a powder component, stickiness does not occur even if the amount of the α -gel constituent component is increased, and not only can the correction effect be maintained for a long period of time, but also a soft, conformable feeling can be imparted during use, fine wrinkles and sagging are not conspicuous, and a firm feeling can be imparted to the skin.

Detailed Description

(A) Higher alcohols

The higher alcohol (a) to be blended in the oil-in-water type emulsion cosmetic of the present invention (hereinafter also simply referred to as "the cosmetic of the present invention") is not particularly limited as long as it can be used in the fields of cosmetics, pharmaceuticals, quasi drugs, and the like, and examples thereof include saturated linear monohydric alcohols, unsaturated monohydric alcohols, and the like.

Examples of the saturated linear monohydric alcohol include dodecanol (lauryl alcohol), tridecanol, tetradecanol (myristyl alcohol), pentadecanol, hexadecanol (cetyl alcohol), heptadecanol, octadecanol (stearyl alcohol), nonadecanol, eicosanol (arachidyl alcohol), heneicosanol, docosanol (behenyl alcohol), tricosanol, tetracosanol (carnauba alcohol), pentacosanol, and hexacosanol (ceryl alcohol). Examples of the unsaturated monohydric alcohol include elaidic alcohol and the like. In the present invention, a saturated linear monohydric alcohol is preferred in view of stability over time.

(A) The higher alcohol may be 1 or 2 or more of the above. In the present invention, a mixture of 2 or more kinds of aliphatic alcohols is preferably used, and a combination in which the melting point of the mixture is 60 ℃ or higher is more preferable. When the melting point is less than 60 ℃, the temperature stability of the system may be lowered depending on the formulation. In the present invention, a higher alcohol having a linear saturated alkyl group having 12 to 22 carbon atoms is preferably used, and for example, a combination of stearyl alcohol and behenyl alcohol is particularly preferable.

(A) The amount of the higher alcohol is 1 to 10% by mass, preferably 2 to 8% by mass, based on the total amount of the oil-in-water emulsion cosmetic. (A) When the amount of the higher alcohol is less than 1% by mass, a firm feeling cannot be imparted to the skin, and when it exceeds 10% by mass, sufficient emulsion stability may not be obtained.

(B) Nonionic surfactant

The nonionic surfactant (B) used in the oil-in-water emulsion cosmetic of the present invention is not particularly limited. Specific examples thereof include polyethylene glycol fatty acid esters, polyoxyethylene fatty acid glycerides, polyoxyethylene/methylpolysiloxane copolymers, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, maltitol hydroxyalkylalkyl ethers, alkylated polysaccharides, alkylglycosides, sucrose fatty acid esters, polyoxyethylene hardened castor oil glycerides, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene/polyoxypropylene block copolymers, tetrapolyoxyethylene/tetrapolyoxypropylene-ethylenediamine condensates, polyoxyethylene-beeswax/lanolin derivatives, alkanolamides, polyoxyethylene-propylene glycol fatty acid esters, polyoxyethylene-alkylamines, polyoxyethylene-fatty acid amides, alkyl ethoxydimethyl amine oxides, triolein phosphate esters, and the like. These nonionic surfactants may be compounded in a combination of 1 or 2 or more.

In the present invention, among the nonionic surfactants (B), those having hydrophilicity, for example, those having HLB of 8 or more, or those having HLB of 10 or more are preferably used. In the present specification, the HLB of 2 or more surfactants is a value obtained by weighted average based on the amount of each surfactant blended.

The nonionic surfactant (B) in the present invention preferably contains: (b1) a surfactant that primarily contributes to the formation of alpha gel (surfactant No. 1), and (b2) a surfactant that primarily contributes to the emulsification of the entire cosmetic system (surfactant No. 2). The aforementioned (b1)1 st nonionic surfactant and (b2) 2 nd nonionic surfactant may be composed of the same substance or different substances, but are preferably hydrophilic.

The 1 st surfactant (b1) is preferably an ether of a linear saturated alkyl group (preferably having 12 to 22 carbon atoms) and a polyalkylene glycol (e.g., polyethylene oxide, polypropylene oxide, or polybutylene oxide). Specific examples thereof include, but are not limited to, glyceryl monostearate (batyl alcohol), POE (20) cetyl ether, POE (30) cetyl ether, POE (20) stearyl ether, POE (25) stearyl ether, POE (30) stearyl ether, POE (20) behenyl ether, POE (30) behenyl ether, POE (20) glyceryl monoisostearate, POE (60) glyceryl monoisostearate, POE (20) sorbitan monostearate, sorbitan cocoate, PEG-7 glyceryl cocoate, lauramide MEA, laurylpyridinium chloride, PEG-32 laurate, PEG-40 hardened castor oil laurate, PEG-14 oleate, polyglycerol-6 oleate, PEG-32 dilaurate, and PEG-11 cocamide. Specific examples thereof include POE (20) cetyl ether, POE (30) cetyl ether, POE (20) stearyl ether, POE (30) stearyl ether, POE (20) behenyl ether, and POE (30) behenyl ether.

As the (b2) 2 nd surfactant, a surfactant having a relatively bulky molecular structure is preferable. Specifically, for example, at least 1 nonionic surfactant selected from the group consisting of polyoxyethylene hardened castor oil (10 E.O), polyoxyethylene hardened castor oil (20 E.O), polyoxyethylene hardened castor oil (30 E.O), polyoxyethylene hardened castor oil (40 E.O), polyoxyethylene hardened castor oil (50 E.O), polyoxyethylene hardened castor oil (60 E.O), polyoxyethylene hardened castor oil (100 E.O), polyoxyethylene hardened castor oil, polyoxyethylene glyceryl stearate, polyoxyethylene glyceryl isostearate, polyoxyethylene glyceryl triisostearate, and polyoxyethylene hardened castor oil succinate is preferably used.

The amount of the nonionic surfactant (B) in the cosmetic composition of the present invention is 2 to 20% by mass of the total of the surfactant (B1) No. 1 and the surfactant (B2) No. 2 relative to the total amount of the oil-in-water emulsion cosmetic composition. (b1) The blending amount of the 1 st surfactant and the (b2) 2 nd surfactant is preferably in the range of 1 to 10% by mass relative to the total amount of the oil-in-water type emulsion cosmetic.

(b1) When the amount of the 1 st nonionic surfactant is less than 1% by mass, sufficient α -gel cannot be formed to give a firm feeling to the skin, and when the amount is more than 10% by mass, the resultant composition may cause stickiness. (b2) When the amount of the 2 nd nonionic surfactant is less than 1% by mass, the emulsion stability of the whole cosmetic is insufficient, and when the amount is more than 10% by mass, the formation of α -gel may be inhibited.

(C) Silicone elastomer powder

The silicone elastomer powder (C) used in the cosmetic of the present invention is not particularly limited, but is preferably a spherical silicone elastomer powder. Among these, a white spherical silicone composite powder in which a spherical silicone rubber powder is covered with a silicone resin is preferably used. The average particle diameter of the silicone elastomer spherical powder is preferably in the range of 0.1 to 100 μm, and more preferably 1 to 50 μm. The silicone elastomer spherical powder preferably has A JIS-A hardness of 10 to 80.

As the silicone elastomer powder (C) in the present invention, for example, 1 or 2 or more selected from the group consisting of (vinyl dimethicone/polymethylsiloxane silsesquioxane) crosspolymer, (diphenyl dimethicone/vinyl diphenyl dimethicone/silsesquioxane) crosspolymer, polysiloxane-1 crosspolymer, polysiloxane-22, (dimethicone/vinyl dimethicone/polymethylsiloxane) crosspolymer, and (dimethicone/vinyl dimethicone) crosspolymer under the names of cosmetic ingredients can be suitably used.

(c) As the silicone elastomer powder, commercially available products can be used, and examples thereof include (vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane) crosslinked polymer [ product name: KSP-100, KSP-101, KSP-102, KSP-105 (manufactured by shin-Etsu chemical Co., Ltd.), and a silicone-1 crosslinked polymer [ product name: KSP-411 (manufactured by shin-Etsu chemical Co., Ltd.), polysiloxane-22 [ product name: KSP-441 (available from shin-Etsu chemical Co., Ltd.), (polydimethylsiloxane/vinyl polydimethylsiloxane) crosslinked polymer [ product name: TREFIL E-506S, TREFIL E-508 (manufactured by Dow Chemical Company), and the like. Among them, silicone elastomer powders of KSP series manufactured by shin-Etsu chemical Co., Ltd, that is, (vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane) crosslinked polymers, polysiloxane-1 crosslinked polymers, and/or polysiloxane-22 are preferably used.

The amount of the silicone elastomer powder (C) to be blended in the cosmetic of the present invention is preferably 1 to 10% by mass, and more preferably 2 to 8% by mass. (C) When the amount of the silicone elastomer powder blended is less than 1% by mass based on the total amount of the cosmetic, the effect of correcting unevenness cannot be sufficiently exhibited, and stickiness may occur. When the content exceeds 10% by mass, the feeling of fit at the time of application may be reduced.

In the cosmetic of the present invention, it is preferable that the ratio of the amount of the silicone elastomer powder (C) to the total amount of the usage powders blended in the cosmetic is 60 mass% or more. Here, "use powder" means: organic or inorganic powders, particularly spherical powders and plate-like powders blended for improving the usability of cosmetics do not include ultraviolet scattering agents such as fine titanium oxide and pigments (colored pigments, white pigments, extender pigments, pearl gloss pigments). Examples of the usable powder include silicone resin powder, resin powder such as PMMA, silica powder, mica, barium sulfate powder, and the like.

The silicone elastomer powder as component (C) may be blended in either the oil phase or the aqueous phase, but is preferably blended in the aqueous phase.

(D) Coloring material

The coloring material (D) in the present invention comprises: (d1) a coloring pigment, (d2) a white pigment, (d3) an extender pigment, (d4) a pearl gloss pigment, (d5) an organic synthetic pigment (including a dye, a lake, an organic pigment), and (d6) a natural pigment. In the present specification, the coloring pigment (d1), the white pigment (d2), and the extender pigment (d3) are also referred to as "inorganic pigments".

In the cosmetic of the present invention, the coloring material (D) contains a coloring pigment (D1) as an essential component, and the coloring pigment (D1) contains an oxide of iron in an amount of 0.5% by mass or more based on the total amount of the cosmetic. (d1) The iron oxide contained in the coloring pigment is preferably 1 or 2 or more selected from the group consisting of red iron oxide (red iron oxide), yellow iron oxide, and black iron oxide, and the (d1) coloring pigment may contain a coloring inorganic pigment typified by ultramarine blue in addition to the iron oxide.

The amount of the iron oxide contained in the (d1) color pigment in the cosmetic of the present invention is at least 0.5% by mass. When the content is less than 0.5% by mass, a sufficient cosmetic effect cannot be obtained. The upper limit of the amount of iron oxide blended is not particularly limited, but is usually 5 mass% or less, preferably 2 mass% or less.

The (D) coloring material in the present invention may contain, in addition to the (D1) coloring pigment, other coloring materials selected from (D2) white pigments, (D3) extender pigments, (D4) pearl gloss pigments, (D5) organic synthetic pigments (including dyes, lakes, organic pigments), and (D6) natural pigments. In particular, in the case where the cosmetic of the present invention is provided in the form of a foundation, it is preferable to blend (d2) a white pigment.

(d2) The white pigment is an inorganic pigment typified by titanium oxide and zinc oxide. In the present invention, titanium oxide is preferably used.

From the viewpoint of improving the masking property, the average particle diameter of titanium oxide is 0.1 μm or more, for example, 0.1 to 1 μm, preferably 0.1 to 0.8 μm. However, the average particle diameter of titanium oxide other than the above may be used without being limited to these ranges as long as the skin correction effect, dispersibility, and emulsion stability are not impaired. The average particle diameter in the present disclosure is an average value calculated from a value measured by observation based on a Transmission Electron Microscope (TEM) or the like.

The inorganic pigment containing (d1) a coloring pigment, (d2) a white pigment, or (d3) an extender pigment in the cosmetic of the present invention is an inorganic pigment having a hydrophobic surface, and these are preferably blended in the oil phase (internal phase).

The method for hydrophobizing the surface of the inorganic pigment is not particularly limited, and a known method can be used. Specific examples thereof include silicone treatment (treatment with silicone oils such as methylhydrogenpolysiloxane, dimethylpolysiloxane and methylphenylpolysiloxane, treatment with alkylsilanes such as methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane and octyltriethoxysilane, and treatment with fluoroalkylsilanes such as trifluoromethylethyltrimethoxysilane and heptadecafluorodecyltrimethoxysilane), fatty acid treatment (treatment with palmitic acid, isostearic acid, stearic acid, lauric acid, myristic acid, behenic acid, oleic acid, abietic acid and 12-hydroxystearic acid), fatty acid soap treatment (treatment with aluminum stearate, calcium stearate, 12-hydroxystearic acid, etc.), fatty acid ester treatment (treatment with dextrin fatty acid ester, cholesterol fatty acid ester, sucrose fatty acid ester, starch fatty acid ester, etc.), and the like.

The amount of the hydrophobized titanium oxide to be blended in the cosmetic of the present invention is 1 to 20% by mass, preferably 2 to 10% by mass, and most preferably 3 to 7% by mass, based on the total amount of the oil-in-water emulsion cosmetic. For example, in the case of cosmetics requiring a skin color correction effect such as foundation and concealer, when the amount of the hydrophobized titanium oxide blended is less than 1% by mass, a sufficient skin color correction effect cannot be obtained, and when it exceeds 20% by mass, emulsion stability may be impaired.

(E) Water (W)

The water (E) used in the cosmetic of the present invention is not particularly limited, and specific examples thereof include purified water and ion-exchanged water.

(E) The amount of water blended is preferably 25 to 90% by mass, more preferably 30 to 80% by mass, and most preferably 30 to 60% by mass based on the total amount of the oil-in-water type emulsion cosmetic.

(F) Oil content

The oil component (F) used in the cosmetic of the present invention constitutes an oil phase of the inner phase of the oil-in-water emulsion cosmetic. The oil component usable in the present invention is not particularly limited, and may be selected from the users of cosmetics within a range not impairing stability. Preferable oil components include hydrocarbon oils, ester oils, silicone oils, liquid oils, and the like.

As the hydrocarbon oil, liquid paraffin, squalane, squalene, paraffin, isoparaffin, ceresin, isohexadecane, isododecane, and the like are used.

As ester oils, pentaerythritol tetra (ethyl hexanoate), cetyl ethylhexanoate, jojoba oil, di (phytosterol/octyl dodecyl) lauroyl glutamate, triisostearin, diisostearate glycerol, tri (ethyl hexanoate), dilinoleic acid (phytosterol/behenyl), dilinoleic acid (phytosterol/isostearyl/cetyl/stearyl/behenyl) esters, isopropyl palmitate, macadamia fatty acid phytosterol esters, pentaerythritol tetrakis (behenic acid/benzoic acid/ethyl hexanoic acid) ester, ethylhexyl palmitate, myristyl myristate, isopropyl myristate, tripropylene glycol dineovalerate, diisopropyl sebacate, isodecyl neopentanoate, and the like.

Examples of the silicone oil include chain silicones such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, cyclic silicones such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, silicone resins having a three-dimensional network structure, and silicone rubbers.

As the liquid fat and oil, there are: linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, camellia oil, castor oil, safflower oil, rapeseed oil, soybean oil, peanut oil, triglycerol, tricaprylin, triisopalmitate, and the like.

The oil component (F) in the present invention further contains an ultraviolet absorber (particularly, one that is liquid at room temperature). Examples of the ultraviolet absorber include octyl methoxycinnamate, octocrylene, polysiloxane-15, bis (resorcinyl) triazine, ethylhexyl triazone, diethylamino oxybenzoyl hexyl benzoate, and oxybenzone-3.

(F) The amount of the oil component is not particularly limited, but is preferably 5 to 30% by mass based on the total amount of the oil-in-water type emulsion cosmetic.

By blending the essential components (a) to (F) as described above, the cosmetic of the present invention can appropriately thicken the total makeup amount by a large amount of α -gel constituent components ((a) and (b1)) as compared with conventional makeup cosmetics. This not only imparts a soft and firm feel to the skin, but also stably retains (C) the silicone elastomer powder uniformly dispersed in the aqueous phase. On the other hand, the (D) coloring material such as the (D1) coloring pigment, the (D2) white pigment and the like is stably held in the oil phase without causing color streaks.

The cosmetic of the present invention preferably has a viscosity of 8000 mPas to 40000 mPas (in the B-type viscometer, 30 ℃ C., 12rpm), more preferably 10000 mPas to 25000 mPas (in the B-type viscometer, 30 ℃ C., 12 rpm).

In the cosmetic of the present invention, in addition to the aforementioned essential components (a) to (F), other optional components that can be generally blended in the cosmetic, particularly the makeup cosmetic, may be blended within a range that does not impair the effects of the present invention.

For example, when a liquid higher fatty acid such as isostearic acid, which is considered to be an essential component, is blended in the cosmetic described in patent document 3, the dispersibility of the powder component is improved, which is preferable. However, since the formation of α gel may be inhibited when a large amount of liquid higher fatty acid is blended, the blending amount of liquid higher fatty acid in the present invention is preferably less than 1% by mass, more preferably 0.9% by mass or less, and further preferably 0.8% by mass or less, and the present invention also includes a mode in which liquid higher fatty acid is not blended.

The cosmetic of the present invention is preferably compounded with a humectant. The humectant is not particularly limited, and may be selected from those generally blended in cosmetics and the like. Examples of the inorganic filler include polyethylene glycol, propylene glycol, glycerin, 1, 3-butylene glycol (1,3-BG), xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucin sulfate, caronic acid, atelocollagen, cholesterol-12-hydroxystearate, sodium lactate, bile acid salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, rosa roxburghii extract, yarrow extract, melilota extract, trehalose, pentaerythritol, POE-POP random copolymer methyl ether, and the like.

Examples of the other optional components include, but are not limited to, thickeners, lower (C1 to C6) alcohols, natural polymers, synthetic polymers, antioxidants, buffers, various drugs, preservatives, and perfumes.

As the water-soluble thickener, polysaccharide derivatives such as hydroxyethyl cellulose, succinoglycan, gellan gum, and agar, and a copolymer containing 2-acrylamide-2-methylpropanesulfonic acid can be used. However, when gellan gum, agar, and a copolymer containing 2-acrylamido-2-methylpropanesulfonic acid are blended, the blending amount thereof is not less than 1/9 which is the total blending amount of α -gel components ((a) higher alcohol + (B) nonionic surfactant), and therefore the cosmetic is not preferable because the cosmetic is too hard. Therefore, when gellan gum, agar, and/or a copolymer containing 2-acrylamido-2-methylpropanesulfonic acid are blended, the blending amount thereof is less than 1/9, preferably 1/10 or less of the blending amount of the α gel-constituting component.

The cosmetic of the present invention can be produced by a production method generally used for oil-in-water emulsion cosmetics. For example, it can be produced as follows: mixing the aqueous phase component and the oil phase component separately, adding the oil phase component mixture to the aqueous phase component mixture, and emulsifying the mixture by stirring as appropriate (preparation method I).

Alternatively, the following method may be used: the "1 st emulsion (1)" comprising (D) the coloring material, a part of (E) water containing (b2) the 2 nd surfactant, and a part of (F) the oil (as "1 st oil") is prepared, the "2 nd emulsion" comprising (a) the higher alcohol, (b1) the 1 st surfactant, the remainder of (E) water, and the remainder of (F) the oil (as "2 nd oil") is separately prepared, and the 1 st emulsion and the 2 nd emulsion are mixed to produce (production method II).

Further, the following method can be used: the "1 st emulsion (2)" comprising (D) a coloring material, (E) water containing (b2) the 2 nd surfactant, and (F) a part of the oil (as "1 st oil") is prepared, and the mixture of (a) a higher alcohol, (b1) the 1 st surfactant, and (F) the remainder of the oil (as "2 nd oil") is added to the 1 st emulsion and further emulsified to produce (production method III).

Here, the "1 st oil component" in the production process II and the production process III preferably contains a nonpolar oil selected from a hydrocarbon oil and a silicone oil, and the "2 nd oil component" preferably contains a polar oil selected from an ester oil and an ultraviolet absorber.

(C) The silicone elastomer powder is preferably blended with the aqueous phase component in process method I, the aqueous phase portion of "the 1 st emulsion (1)" or "the 2 nd emulsion" in process method II, and the aqueous phase portion of "the 1 st emulsion (2)" in process method III.

The cosmetic of the present invention is suitably provided in the form of a skin cosmetic, particularly a makeup cosmetic such as foundation, which is excellent in skin correction effect and firming feeling.

The cosmetic of the present invention is suitably provided in the form of a liquid or cream foundation, and is preferably provided in the form of a foundation contained in a tube-shaped container, a dispenser container, a jar container, or the like, or a foundation of a foundation pad type impregnated in a water-insoluble sponge, a foam carrier, or the like.

Examples

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto. Unless otherwise specified, the amount of the compound is expressed in% by mass relative to the total amount.

Oil-in-water emulsion cosmetics having the formulations shown in tables 1 and 2 were prepared and evaluated as follows.

Each of the cosmetic compositions of examples and comparative examples was applied to the skin, and sensory evaluation was made on "non-sticky feeling", "firm feeling", "fine wrinkle masking effect", "ease of application", and "cosmetic effect after 4 hours" according to the following criteria. "cosmetic effect after 4 hours" is an index indicating that good cosmetic effect of the floating powder/floating fat was not seen after 4 hours.

A: it was strongly felt.

B: is felt.

C: it is less perceptible.

D: it is not perceived at all.

The "stability" was evaluated by visual observation of the cosmetics of each example according to the following criteria.

A: extremely stable and no change was observed.

B: stable and substantially no change was observed.

C: unstable and produce color stripes.

[ Table 1]

[ Table 2]

As shown in tables 1 and 2, the cosmetics of the present invention (examples 1 to 5) gave satisfactory results in all evaluation items. However, comparative example 1, in which the amount of α gel-constituting components ((a) and (b1)) was small, was poor in stability and failed to impart a firm feeling. On the other hand, comparative example 2, which did not contain the silicone elastomer powder (C), produced stickiness and was also poor in fine wrinkle masking effect. In addition, comparative examples 1 and 2 are also insufficient in terms of cosmetic effect.

Other formulation examples of the cosmetic of the present invention are shown below. The cosmetic composition of this formulation also had the same characteristics as in example 1.

(formulation example 1)

Claims

1. An oil-in-water type emulsion cosmetic characterized by comprising:

(A)1 to 10 mass% of a higher alcohol,

(B)2 to 20 mass% of a nonionic surfactant,

(C) Organosilicon elastomer powder,

(D) A coloring material,

(E) Water, and

(F) the oil component is the mixture of oil component,

the coloring material (D) contains a coloring pigment (D1) containing an iron oxide in an amount of 0.5 mass% or more based on the total amount of the cosmetic.

2. The cosmetic according to claim 1, wherein the (B) nonionic surfactant contains:

(b1)1 to 10 mass% of a 1 st surfactant containing a linear saturated alkyl group and an ether of a polyalkylene glycol, and

(b2)1 to 10 mass% of a No. 2 surfactant containing polyoxyethylene hardened castor oil.

3. The cosmetic according to claim 1 or 2, wherein the (d1) colored pigment contains at least 1 selected from the group consisting of red iron oxide, yellow iron oxide and black iron oxide.

4. The cosmetic according to any one of claims 1 to 3, wherein (D) the coloring material further contains (D2) a white pigment which is titanium oxide.

5. The cosmetic according to any one of claims 1 to 4, wherein (C) silicone elastomer powder is 1 or 2 or more selected from the group consisting of (vinylpolydimethylsiloxane/polymethylsilsesquioxane) crosspolymer, (diphenylpolydimethylsiloxane/vinyldiphenylpolydimethylsiloxane/silsesquioxane) crosspolymer, polysiloxane-1 crosspolymer, polysiloxane-22, (polydimethylsiloxane/vinylpolydimethylsiloxane/polymethylsiloxane) crosspolymer, and (polydimethylsiloxane/vinylpolydimethylsiloxane) crosspolymer.