JP7272806B2 - skin cosmetics - Google Patents

Description

The present invention relates to skin cosmetics.

BACKGROUND ART Conventionally, there has been a demand for a skin cosmetic that provides a high SPF/PA effect in order to protect the skin from the adverse effects of ultraviolet rays. In such skin cosmetics, ultraviolet scattering agents and ultraviolet absorbers are generally used, and in recent years, in order to protect the skin from ultraviolet rays in the UV-A region, ultraviolet scattering agents and ultraviolet rays in the UV-A region are used. A skin cosmetic containing an ultraviolet absorber has been developed. However, since such skin cosmetics tend to be sticky, non-sticky cosmetics with a high UV protection effect are being studied.
For example, Patent Document 1 describes that a sunscreen cosmetic containing a silicone emulsifier, a polyglycerin-modified silicone oil, a UV-B absorber, a UV-A absorber, and a metal oxide does not feel sticky. ing.
Patent Document 2 describes that an emulsified cosmetic containing a UV-A absorber, specific surface-treated fine particles of zinc oxide and titanium dioxide, and liquid oil has a high UV protection effect and is non-sticky. there is
In Patent Document 3, an oil-in-water emulsified cosmetic is used to realize a good feeling of use, and at the same time, in order to obtain a uniform UV protection effect while maintaining this feeling of use, in addition to an oil-soluble ultraviolet absorber and a liquid oil, In addition, an oil-in-water type UV protective cosmetic composition using a combination of dextrin fatty acid ester, hydrophobic silica and a specific water-soluble polymer is disclosed.

JP 2012-193138 A JP 2014-240382 A JP 2018-095637 A

However, these skin cosmetics are not sufficiently satisfactory in terms of UV protection effect and feeling of use in light of the SPF standards that have become stricter in recent years. There was a case where it was lost.
In order to obtain a high SPF and an ultraviolet protection effect, the present inventors have developed an oil-based cosmetic or a water-in-oil emulsified cosmetic containing both a UV-A absorber, which is a poorly soluble ultraviolet absorber, and a metal oxide. When a relatively large amount of volatile oil is blended in a cosmetic composition in which the continuous phase is an oil phase in order to improve the feeling of use such as stickiness, the SPF is rather lowered. I found out.

The present inventors focused on this point and conducted intensive studies. As a result, by using an oily gelling agent, an oily or oily gel containing a UV-A absorber, a metal oxide and a relatively large amount of volatile oil To obtain a skin cosmetic that can obtain a high SPF value even if it is a medium-water emulsified cosmetic, has an ultraviolet protective effect in a wide ultraviolet region, is not sticky when applied, and has an excellent feeling of use. Found it.

The present invention provides the following components (A), (B), (C) and (D):
(A) oily gelling agent 0.05 to 5% by mass,
(B) volatile oil 20 to 55% by mass,
(C) an ultraviolet absorber that absorbs ultraviolet rays in the UV-A region;
(D) It relates to an oily liquid skin cosmetic or a water-in-oil type skin cosmetic containing a metal oxide.

The skin cosmetic of the present invention provides a high SPF, has an ultraviolet protective effect in a wide ultraviolet region, is non-sticky when applied, has an excellent feeling of use, can be applied uniformly, and maintains the SPF. It is also excellent in makeup and does not easily run off.

The oily gelling agent of component (A) used in the present invention may be any one that is used in ordinary cosmetics and can thicken the oil phase.
In the present invention, even if the composition contains a large amount of the component (B) and the continuous phase is an oil phase, by using the component (A), a high UV protection effect can be achieved. After being applied to the skin, the cosmetic composition of the present invention can leave a coating film in which the components (C) and (D) are uniformly dispersed to some extent on the skin, so that high SPF and UV protection effect can be obtained. It is assumed that
Examples of component (A) oily gelling agents include organically modified clay minerals, crosslinked organopolysiloxanes, dextrin fatty acid esters, metallic soaps, sucrose fatty acid esters, and oily components (waxes) that are solid at 25°C. be done.

As the organically modified clay mineral, any one that is used in ordinary cosmetics can be used without limitation. For example, cationically modified clay minerals obtained by treating layered clay minerals such as bentonite, laponite, hectorite, montmorillonite and magnesium aluminum silicate with a quaternary ammonium salt type cationic surfactant are preferred.
Here, the quaternary ammonium salt-type cationic surfactant has the following formula (1):

(Chemical 1)
[R ¹ R ² R ³ R ⁴ N] ⁺ X ⁻ (1)

(In the formula, R ¹ represents an alkyl group having 10 to 22 carbon atoms or a benzyl group, R ² represents a methyl group or an alkyl group having 10 to 22 carbon atoms, and R ³ and R ⁴ each have 1 carbon atom. ~3 alkyl group or hydroxyalkyl group, and X represents a halogen atom or a methylsulfate residue)
is represented by

Specifically, dodecyltrimethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, myristyldimethylethylammonium chloride, cetyldimethylethylammonium chloride, stearyldimethylethylammonium chloride, behenyldimethyl ethylammonium chloride, myristyldiethylmethylammonium chloride, cetyldiethylmethylammonium chloride, stearyldiethylmethylammonium chloride, behenyldiethylmethylammonium chloride, benzyldimethylmyristylammonium chloride, benzyldimethylcetylammonium chloride, benzyldimethylstearylammonium chloride, benzyldimethylbehenylammonium chloride Chloride, benzylmethylethylcetylammonium chloride, benzylmethylethylstearylammonium chloride, distearyldimethylammonium chloride, dibehenyldihydroxyethylammonium chloride, bromide compounds instead of the chlorides of the above compounds, and dipalmitylpropyl and ethylammonium methylsulfate.
Among them, benzyldimethylstearylammonium chloride and dimethyldistearylammonium chloride are preferred, and dimethyldistearylammonium chloride is more preferred.

Preferred cation-modified clay minerals obtained by treating a layered clay mineral with a quaternary ammonium salt-type cationic surfactant include dimethyldistearylammonium hectorite, dimethyldistearylammonium bentonite, benzyldimethylstearylammonium hectorite, and the like. Dimethyldistearylammonium hectorite is more preferred. Commercially available products include Benton 38, Benton 38VCG, and Benton 27 (manufactured by Elementis Japan).

The organically modified clay mineral can also be used as a dispersion diluted with a solvent from the viewpoint of improving workability and being excellent in the effect of thickening oil.
Specifically, it is preferable to use a premixed gel in which an organically modified clay mineral is dispersed in a solvent in advance. The solvent is not limited as long as it can be thickened by an organically modified clay mineral, but octyldodecanol, mineral oil, volatile silicone oil and the like are preferable from the viewpoint of the effect of thickening the oil.
The content of the organically modified clay mineral in the premix gel is preferably 5 to 25% by mass from the viewpoints of improving workability, increasing the viscosity of the oil, and suppressing the oil separation of the thickened oily gel itself. 10 to 20% by mass is more preferable, and 10 to 18% by mass is even more preferable.
Examples of premixed gels include Benton gel EUGV containing 10% by mass of cation-modified clay mineral, Benton gel MIOV, Benton gel VS-5 PCV containing 18% by mass, and Benton gel PTM containing 15% by mass (manufactured by Elementis Japan Co., Ltd.). can be used.

Examples of crosslinked organopolysiloxane include crosslinked dimethylpolysiloxane and crosslinked alkylpolysiloxane, and crosslinked polyether-modified silicone can also be used.

The crosslinked dimethylpolysiloxane is a polymer having a crosslinked structure in which the siloxane skeleton is three-dimensionally crosslinked, and the crosslinked alkylpolysiloxane further has an alkyl group having 6 to 20 carbon atoms.
Among these are (dimethicone/vinyl dimethicone) crosspolymers, (dimethicone/phenyl dimethicone) crosspolymers, (vinyl dimethicone/lauryl dimethicone) crosspolymers, alkyl (C30-45) cetearyl dimethicone crosspolymers, cetearyl dimethicone crosspolymers. preferable.
These may be used as they are in a solid state, or may be used after being uniformly mixed with a liquid oil. Among them, from the viewpoint of dispersibility in cosmetics and workability, it is preferable to use it as a dispersion diluted with a liquid oil, and it is preferable to use silicone oil, hydrocarbon oil, ester oil. Hydrogen oil is more preferred, and dimethylpolysiloxane, decamethylcyclopentasiloxane, liquid paraffin, and light isoparaffin are even more preferred.

As the (dimethicone/vinyl dimethicone) crosspolymer, KSG-15, which is a mixture with decamethylcyclopentasiloxane, and KSG-16, which is a mixture with low-viscosity dimethylpolysiloxane (manufactured by Shin-Etsu Chemical Co., Ltd.), are commercially available. products can be used.
As the (dimethicone/phenyldimethicone) crosspolymer, commercially available products such as KSG-18 (manufactured by Shin-Etsu Chemical Co., Ltd.), which is a mixture with methylphenylpolysiloxane, can be used.
In addition, the (vinyl dimethicone/lauryl dimethicone) crosspolymer includes KSG-41 which is a mixture with liquid paraffin, KSG-42 which is a mixture with light isoparaffin, and KSG which is a mixture with glyceryl tri-2-ethylhexanoate. -43, and KSG-44 (manufactured by Shin-Etsu Chemical Co., Ltd.), which is a mixture with squalane, can be used.
Furthermore, as the alkyl (C30-45) cetearyl dimethicone crosspolymer, commercial products such as Velvesil 125 (manufactured by Momentive Performance Materials), which is a mixture with cyclopentasiloxane, can be used.
As the cetearyl dimethicone crosspolymer, commercially available products such as Velvesil DM (manufactured by Momentive Performance Materials), which is a mixture of dimethicone, can be used.

Furthermore, as the crosslinked polyether-modified silicone, (dimethicone/(PEG-10/15)) crosspolymer, (PEG-15/lauryl dimethicone) crosspolymer, and (PEG-10/lauryl dimethicone) crosspolymer are preferred.
From the viewpoint of dispersibility in cosmetics and workability, the crosslinked polyether-modified silicone is preferably used as a dispersion diluted with a liquid oil, and more preferably a silicone oil, a hydrocarbon oil, or an ester oil. More preferably, silicone oil and hydrocarbon oil are used.
Furthermore, it is preferably diluted or dispersed in a volatile hydrocarbon oil, and isododecane is more preferable as the volatile hydrocarbon oil.

Crosslinked polyether-modified silicones include, for example, KSG-210, KSG-240 (dimethicone/(PEG-10/15)) crosspolymer); KSG-310, KSG-320, KSG-330 ((PEG-15/ Lauryl dimethicone) crosspolymer); KSG-340 ((PEG-10/lauryl dimethicone) crosspolymer and (PEG-15/lauryl dimethicone) crosspolymer) (manufactured by Shin-Etsu Chemical Co., Ltd.). can.

The dextrin fatty acid ester is an ester of fatty acid and dextrin, the fatty acid preferably has 8 to 24 carbon atoms, more preferably 14 to 18 carbon atoms, and the fatty acid is a linear or branched saturated or unsaturated fatty acid. It is a saturated fatty acid and preferably has an average degree of polymerization of 10-50, more preferably 20-30.
Specific examples include dextrin palmitate, dextrin palmitate/2-ethylhexanoate, dextrin stearate, dextrin palmitate/stearate, dextrin oleate, dextrin isopalmitate, dextrin isostearate, and dextrin myristate. .
Commercially available products thereof include dextrin palmitate (Rheopearl KL2, Rheopearl KS2, Rheopearl TL2), dextrin palmitate/2-ethylhexanoate (Rheopearl TT2), dextrin myristate (Rheopearl MKL2) and the like manufactured by Chiba Flour Mills. be done.

Examples of oily components that are solid at 25°C include carnauba wax (melting point: 80-86°C), beeswax (melting point: 64°C), candelilla wax (melting point: 68-72°C), and rice bran wax (melting point: 70-83°C). , waxes such as jojoba wax (melting point: 55°C), Japanese wax (melting point: 55°C), jojoba butter (melting point: 46-54°C), lanolin (melting point: 37-43°C); hydrogenated jojoba oil (melting point: 68°C) , isostearic acid hydrogenated castor oil (melting point: 45 ° C), hydrogenated castor oil (melting point: 84 ° C), hydrogenated palm oil (melting point: 65 ° C), hydrogenated coconut oil (melting point: 70 ° C), cetyl palmitate (melting point: 50 ° C), eicosanedioic acid glyceryl behenate (melting point: 66 ° C), glyceryl behenate, tristearin, tribehenin, shea butter (melting point: 36-45 ° C), dimer dilinoleic acid (phytosteryl / isostearyl / cetyl / stearyl / behenyl ) (melting point: 38°C), tri (caprylic, capric, myristic, stearic acid) glyceryl (melting point: 40°C), ester oils such as phytosteryl oleate, macadamia nut fatty acid phytosteryl; batyl alcohol (melting point: 60-70°C), Kimi ether oils such as alcohol (melting point 60.5 to 61.5° C.); and higher alcohols such as stearyl alcohol (melting point 58.0° C.) and behenyl alcohol (melting point 70.5° C.).

Component (A) has good compatibility with component (C) and component (D) when used in combination with component (B), and imparts appropriate viscosity and a uniform finish to the coating film, as well as a higher UV protection effect. Therefore, organically modified clay minerals, crosslinked organopolysiloxanes, dextrin fatty acid esters, and oily components that are solid at 25°C are preferable, and furthermore, the components (C) and (D) in the formulation of the present invention have good dispersion stability. From the viewpoint of improving storage stability, and from the viewpoint of uniform color and bright appearance after application, organically modified clay minerals and oily components that are solid at 25 ° C. are more preferable, and distearyldimonium hectorite and tribehenin are more preferable. Organically modified clay minerals are particularly preferred.

Component (A) can be used alone or in combination of two or more, and the content is 0.05 mass in the entire composition from the viewpoint of imparting an appropriate viscosity to the coating film and a higher UV protection effect. % or more, more preferably 0.1 mass % or more, 5 mass % or less, preferably 3 mass % or less, and more preferably 2 mass % or less. The content of component (A) is 0.05 to 5% by mass, preferably 0.1 to 3% by mass, more preferably 0.1 to 2% by mass in the total composition.

In the volatile oil of component (B) used in the present invention, volatile means that it has a flash point of 35-87°C.
Volatile oils include (B1) volatile silicone oils and (B2) volatile hydrocarbon oils.
(B1) Volatile silicone oils include, for example, linear dimethylpolysiloxanes such as dimethylpolysiloxane (1cs), dimethylpolysiloxane (1.5cs), and dimethylpolysiloxane (2cs); tris(trimethylsilyl)methylsilane, tetrakis branched siloxanes such as (trimethylsilyl)silane; cyclic dimethylsiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane; and caprylyl methicone.
Among these, branched siloxane, cyclic dimethylsiloxane, and caprylyl methicone are preferred, and cyclic dimethylsiloxane and caprylyl, in terms of stickiness, long-lasting makeup, and dispersibility and compatibility of components (C) and (D). Methicone is more preferred.

(B2) Volatile hydrocarbon oils include, for example, paraffinic hydrocarbon oils such as n-decane, n-undecane and n-dodecane; isoparaffinic hydrocarbon oils such as isodecane, isododecane and hydrogenated polyisobutene; cyclodecane and cyclo Cyclic paraffin hydrocarbon oils such as dodecane can be mentioned. Among these, hydrocarbon oils having 8 to 16 carbon atoms are preferred, hydrocarbon oils having 10 to 16 carbon atoms are more preferred, and hydrocarbon oils having 12 carbon atoms are even more preferred. Among them, isoparaffinic hydrocarbon oils are preferred, and isododecane and hydrogenated polyisobutene having 12 carbon atoms are more preferred.

As the volatile oil of component (B), (B1) volatile silicone oil is preferably included in terms of non-stickiness and long-lasting makeup.
(B1) Volatile silicone oil can be used alone or in combination of two or more. It is preferably 55% by mass, more preferably 15 to 50% by mass, even more preferably 20 to 45% by mass, even more preferably 25 to 40% by mass.

Component (B) can be used alone or in combination of two or more. It is preferably 55% by mass or less, preferably 45% by mass or less, and more preferably 40% by mass or less. The content of component (B) is 20 to 55% by mass, preferably 25 to 45% by mass, more preferably 25 to 40% by mass, in the total composition.

Component (C) used in the present invention is an ultraviolet absorber that absorbs ultraviolet rays in the UV-A region, and may be any of those used in ordinary cosmetics. For example, 4-tert-butyl-4′-methoxydibenzoylmethane, hexyl diethylaminohydroxybenzoylbenzoate, 2-ethylhexyl dimethoxybenzylidenedioxoimidazolidinepropionate, methylenebisbenzotriazolyltetramethylbutylphenol, bisethylhexyloxyphenol methoxy phenyltriazine and the like. Among these, diethylaminohydroxybenzoyl hexylbenzoate and bisethylhexyloxyphenol methoxyphenyltriazine are preferred from the viewpoint of compatibility with oil agents.

Component (C) can be used alone or in combination of two or more. 0.1% by mass or more is preferable, 0.2% by mass or more is more preferable, 0.5% by mass or more is more preferable, 10% by mass or less is preferable, 7% by mass or less is more preferable, and 5% by mass or less is More preferred. The content of component (C) is preferably 0.1 to 10% by mass, more preferably 0.2 to 7% by mass, and even more preferably 0.5 to 5% by mass in the total composition.

In the present invention, the mass ratio (B)/(C) of the component (B) to the component (C) has a sufficient UV protection effect in a wide range of UV wavelengths, a uniform coating film, and excellent usability. From the viewpoint, 4 to 80 are preferable, 10 to 70 are more preferable, 22 to 65 are more preferable, and 30 to 60 are even more preferable.

The metal oxide of component (D) used in the present invention can further enhance the UV protection effect.
Metal oxides of component (D) are those used in ordinary cosmetics, and examples thereof include titanium oxide, zinc oxide, iron oxide, cerium oxide, and chromium oxide.
These metal oxides can be used as they are, or can be used after being subjected to hydrophobic treatment or hydrophilic treatment.
The hydrophobizing treatment is not limited as long as it is a treatment applied to ordinary cosmetic powders, and includes fluorine compounds, silicone compounds, metal soaps, amino acid compounds, lecithin, alkylsilanes, oils, organic titanates, and the like. A dry treatment, a wet treatment, or the like may be performed using a surface treatment agent.
Specific examples of surface treatment agents include fluorine-based compounds such as perfluoropolyethers, perfluoroalkyl phosphates, perfluoroalkylalkoxysilanes, and fluorine-modified silicones; Silicone compounds such as terminal or both terminal trialkoxy group-modified organopolysiloxanes, crosslinked silicones, silicone resins, fluorine-modified silicone resins, and acrylic-modified silicones; aluminum stearate, aluminum myristate, zinc stearate, magnesium stearate, etc. metal soaps; proline, hydroxyproline, alanine, glycine, sarcosine, glutamic acid, aspartic acid, lysine and their derivatives, amino acid compounds such as acylated amino acids; lecithin, hydrogenated lecithin; methyltrimethoxysilane, ethyltrimethoxysilane, Alkylsilanes such as hexyltrimethoxysilane, octyltrimethoxysilane, octyltriethoxysilane and triethoxycaprylylsilane; oils such as polyisobutylene, waxes, fats and oils, and fatty acids; organic titanates such as isopropyltriisostearoyl titanate; .

Moreover, the hydrophilization treatment is not limited as long as it is a treatment applied to ordinary cosmetic powders.
For example, gum arabic, tragacanth, arabinogalactan, locust bean gum (carob gum), guar gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), starch (rice, corn, potato, wheat), algaecolloid, tranto gum, plant-based polymers such as locust bean gum; microbial-based polymers such as xanthan gum, dextran, succinoglucan and pullulan; animal-based polymers such as collagen, casein, albumin, deoxyribonucleic acid (DNA) and salts thereof; carboxymethyl starch , starch-based polymers such as methylhydroxypropyl starch; Polymer; Alginic acid-based polymers such as sodium alginate and propylene glycol alginate; Vinyl-based polymers such as polyvinyl methyl ether, polyvinylpyrrolidone and carboxyvinyl polymer; Polyoxyethylene-based polymers such as polyethylene glycol and polyethylene glycol silane; Oxyethylene-polyoxypropylene copolymer-based polymers; acrylic polymers such as sodium polyacrylate, polyethyl acrylate, and polyacrylic acid amide; and inorganic silicic acid compounds such as silica.

The hydrophobizing treatment and hydrophilizing treatment can be carried out according to usual methods. Hydrophobic treatment is preferred from the viewpoint of improving dispersibility in oil.
The treatment amount of the hydrophobic treatment and the hydrophilic treatment is preferably 0.1 to 15% by mass, more preferably 1 to 12% by mass, based on the amount of the coated powder, from the viewpoint of improving dispersibility in the solvent. .

As the metal oxide of the component (D), it has excellent dispersion stability in the volatile oil of the component (B), feels good on the skin even after a long period of time after application, and has high water resistance. It preferably contains treated titanium oxide, and more preferably contains titanium oxide surface-treated with both (D1) one or more selected from alkyltrialkoxysilanes, acylated amino acids and fatty acids, and silicone. In addition, when a large amount of (B1) is contained as the component (B), it is more preferable to use (D1) because it has good dispersibility in (B1), has excellent water resistance, and has good compatibility with the skin. preferable.
In addition, it is preferable to contain (D2) fine zinc oxide from the viewpoint of further improving the SPF, adsorbing sebum, and making the makeup last longer.

Component (D) can be used alone or in combination of two or more. 0.5% by mass or more is preferable, 1% by mass or more is more preferable, 2% by mass or more is still more preferable, 50% by mass or less is preferable, 40% by mass or less is more preferable, and 30% by mass or less is even more preferable. The content of component (D) is preferably 0.5 to 50% by mass, more preferably 1 to 40% by mass, and even more preferably 2 to 30% by mass in the total composition.

The skin cosmetic of the present invention can further contain, as component (E), an oil that is liquid at 25° C. other than component (B), thereby further increasing SPF. The term “liquid at 25° C.” means that it has fluidity at 25° C., and includes paste.
Such oils are those used in ordinary cosmetics, and include, for example, ester oils, hydrocarbon oils, higher alcohols, silicone oils and the like.

In the present invention, the total content of components (B) and (E) is preferably 20% by mass or more, more preferably 25% by mass or more, in the total composition from the viewpoint of suppressing oiliness while enhancing the UV protection effect. It is more preferably 30% by mass or more, preferably 80% by mass or less, more preferably 70% by mass or less, and even more preferably 60% by mass or less. The total content of component (B) and component (E) is preferably 20 to 80% by mass, more preferably 25 to 70% by mass, and even more preferably 30 to 60% by mass in the total composition.

As component (E) other than component (B), the oil that is liquid at 25° C. preferably contains (E1) an ester oil.
Ester oils that are liquid at 25° C. are not limited as long as they are used in ordinary cosmetics, and examples include isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, butyl stearate, and oleic acid. Oleyl, isotridecyl isononanoate, isostearyl myristate, octyldodecyl ricinoleate, diglyceryl monoisostearate, ethylhexyl palmitate, cetyl ethylhexanoate, ethylhexyl methoxycinnamate, tocopheryl acetate, propylene carbonate, diisostearyl malate, Neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, diglyceryl diisostearate, propanediol diisostearate, glyceryl monomyristate monoisostearate, glyceryl triisostearate, di(capric/caprylic) propanediol, tri(capryl) acid/capric acid) glyceryl, triethylhexanoin, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaerythrityl tetraoctanoate, pentaerythrityl tetraethylhexanoate, pentaerythritol tetraisostearate, isostearin Polyglyceryl-2 acid, polyglyceryl-2 diisostarate, polyglyceryl-2 triisostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-6 octacaprylate, (isostaric acid/sebacic acid) ditrimethylolpropane oligoester, dipentaerythrityl tripolyhydroxystearate , di(phytosteryl/octyldodecyl) lauroyl glutamate, trehalose esters isostearate, dipentaerythrityl tetraisostearate, dipentaerythrityl pentaisostearate, ethylhexyl hydroxystearate, phytosterol fatty acid ester, cholesterol fatty acid ester, polyglycerin fatty acid ester, pentaerythritol fatty acid ester, etc. ester oil; avocado oil, macadamia nut oil, olive oil, rapeseed oil, sesame oil, wheat germ oil, linseed oil, cottonseed oil, soybean oil, palm oil, coconut oil, castor oil, jojoba oil, sunflower oil, camellia oil, corn oil, etc. of vegetable oils.
Among these, isopropyl myristate, octyldodecyl myristate, isopropyl isostearate, isononyl isononanoate, and butyl stearate are used to dissolve the component (C) and improve the uniformity of the component (C) in the coating film. , oleyl oleate, isotridecyl isononanoate, isostearyl myristate, octyldodecyl ricinoleate, diglyceryl monoisostearate, ethylhexyl palmitate, cetyl ethylhexanoate, and ethylhexyl methoxycinnamate. Ethylhexyl methoxycinnamate is preferred, and in addition to this, ethylhexyl methoxycinnamate is more preferred from the viewpoint of further enhancing the UV protection effect over a wider range of UV wavelengths.

The ester oil of component (E1) can be used alone or in combination of two or more, and the content is preferably 1% by mass or more, preferably 2% by mass, in the total composition from the viewpoint of long-lasting makeup and feeling on use. 5% by mass or more is more preferable, 20% by mass or less is preferable, 18% by mass or less is more preferable, and 15% by mass or less is even more preferable. The content of component (E1) is preferably 1 to 20% by mass, more preferably 2 to 18% by mass, and even more preferably 5 to 15% by mass in the total composition.

As component (E), other than component (B), an oil that is liquid at 25° C. reduces stickiness and achieves long-lasting makeup, and also has good dispersibility and compatibility with (C) and (D). and a high UV absorption effect in a wide UV region, it is preferable to further contain component (E2) phenyl-modified silicone. Phenyl-modified silicones include, for example, phenyltrimethicone, diphenylsiloxyphenyltrimethicone, and the like.

In the present invention, the mass ratio of component (E) to component (C) is (E)/(C)=0.00, from the viewpoint of dissolving component (C) and improving skin compatibility of the cosmetic coating film. It is preferably from 5 to 60, more preferably from 1 to 50, even more preferably from 2 to 30, even more preferably from 7 to 25.

In the present invention, the content of water when it is contained is preferably 0.1 to 50% by mass, more preferably 1 to 30% by mass, and even more preferably 5 to 20% by mass in the total composition.

The cosmetic of the present invention contains, in addition to the above components, components that are commonly used in cosmetics, such as powders other than those described above, oil components other than those described above, surfactants, pigments, water-soluble polymers, antioxidants, and fragrances. .

The skin cosmetic of the present invention can be produced according to a conventional method, and is an oily liquid skin cosmetic or a water-in-oil type skin cosmetic. In the present invention, the oily cosmetic is a liquid cosmetic in which the continuous phase is an oil phase. The water-in-oil emulsified cosmetic is a water-in-oil emulsified cosmetic that can be in the form of a liquid, milky lotion, paste, cream, gel, or the like, and whose continuous phase is an oil phase.
The cosmetics of the present invention include makeup bases, foundations, concealers; blushers, eyeshadows, mascara, eyeliners, eyebrows, overcoat agents, lipsticks and other makeup cosmetics; sunscreen lotions, sunscreen creams and the like. UV protection cosmetics; skin care emulsions, skin care creams, BB creams, skin care cosmetics such as serums, and the like. Among them, UV protection cosmetics and make-up cosmetics are preferable. In addition, the skin cosmetic of the present invention is more preferably a make-up cosmetic, and more preferably a makeup base or a foundation, since the skin looks bright and color unevenness is less likely to occur.

Examples 1-5 and Comparative Examples 1-4
A water-in-oil type emulsified cosmetic having the composition shown in Table 1 was produced by a conventional method, the SPF value was measured, and the makeup durability, finish uniformity, non-stickiness, storage stability and cosmetic effect were evaluated. The results are also shown in Table 1.

(Evaluation method)
(1) SPF value:
Each cosmetic was uniformly applied on a PMMA plate so as to be 1.4 mg/cm ² for 1 minute and dried in a cool and dark place for 15 minutes. After drying the sample, an SPF analyzer (UV2000S, manufactured by Labsphere, USA) was used to measure the transmission of the absorption spectrum (wavelength 350 nm) at a total of 9 points on the square PMMA plate, the middle point, each vertex, and the middle point of the side connecting each vertex. The rate (%) was measured and the average of 9 points was obtained. The SPF value (-) was obtained from the transmittance (%).

(2) Makeup durability:
After cleansing and conditioning the skin, each cosmetic was applied to the entire face by three expert panelists, and the durability of each makeup was visually evaluated. The criteria were divided into 5 grades, and 5 was assigned when there was no change in the makeup finish after 6 hours, and 1 was assigned when there was a change within 2 hours. The results are shown as the average value of 3 panelists.

(3) Finish uniformity:
After cleansing and conditioning the skin, each cosmetic was applied to the entire face by three expert panelists, and the uniformity of each finish was visually evaluated. Criteria were divided into 5 levels, 5 when there was no uneven coating due to localized parts of the face, and 1 when pores were easily removed and uneven coating was observed, and the coating film was uneven. The results are shown as the average value of 3 panelists.

(4) Non-stickiness:
After cleansing and conditioning the skin, each cosmetic was applied to the entire face by 3 expert panelists, and sensory evaluation was performed on the stickiness of the finished coating film. The criteria were divided into 5 grades, 5 when the finished skin did not feel sticky, and 1 when the finished skin felt unpleasant stickiness due to oil or the like. The results are shown as the average value of 3 panelists.

(5) Storage stability:
The state of each cosmetic after being stored in a constant temperature bath at 45° C. for one month was visually observed and evaluated according to the following criteria.
[Storage stability criteria]
A: No change in quality.
B: Some change in quality is felt.
C: A change in quality is felt.
D: A clear change in quality is felt.

(6) Cosmetic effect:
After cleansing and conditioning the skin, each cosmetic was applied to the entire face by three expert panelists, and the cosmetic effect of the finished coating film was visually evaluated. The criteria were divided into 5 grades, 5 when uneven skin color was suppressed or the skin looked bright, and 1 when the uneven skin color could not be hidden and the skin did not look bright. The results are shown as the average value of 3 panelists.

Examples 6-10
Water-in-oil type emulsified cosmetics having the compositions shown in Tables 2 to 6 were produced by a conventional method, and the SPF values were measured in the same manner as in Examples 1 to 5. The results are also shown in Tables 2 to 6.
In addition, it was confirmed that the water-in-oil type emulsified cosmetics of Examples 6 to 10 all had excellent persistence, uniform finish, no stickiness, good storage stability, and good cosmetic effects.

Claims (7)

The following components (A), (B), (C) and (D):
(A) 0.05 to 5% by mass of one or more oily gelling agents selected from distearyldimonium hectorite and tribehenin ,
(B) volatile oil 20 to 55% by mass,
(C) an ultraviolet absorber that absorbs ultraviolet rays in the UV-A region;
(D) An oil-based liquid skin cosmetic or a water-in-oil type skin cosmetic containing a metal oxide surface-treated with an alkylsilane, an amino acid/organic titanate, a fatty acid, or a silicone/acylated amino acid . 2. The skin cosmetic composition according to claim 1 , wherein component (B) contains (B1) a volatile silicone oil. 3. The skin cosmetic composition according to claim 1, wherein the total content of component (B) and an oily agent that is liquid at 25° C. other than component (B) is 20 to 80% by mass. 4. The skin cosmetic according to any one of claims 1 to 3 , wherein component (D) contains (D2) fine zinc oxide particles. The skin cosmetic according to any one of claims 2 to 4, wherein the content of component (B1) is 20 to 45% by mass in the total composition. Further, (E) contains an oil that is liquid at 25°C other than component (B), and the mass ratio of component (E) to component (C) is (E)/(C) = 2 to 30. 6. The skin cosmetic according to any one of 1 to 5 . The skin cosmetic according to claim 6 , wherein component (E) contains component (E1) ester oil, and the content of component (E1) is 5 to 15% by mass in the total composition.