JP2020196690A - Non-emulsified oily cosmetics - Google Patents

Abstract

To provide non-emulsified oily cosmetics that can have an improved SPF value even when containing an elastomer, and achieve excellent usability.SOLUTION: Non-emulsified oily cosmetics contain a non-emulsified silicone elastomer, an ultraviolet absorber, and 0.5-3 mass% of a wax.SELECTED DRAWING: None

Description

The present invention relates to a non-emulsifying oil-based cosmetic.

Sunscreen cosmetics are intended to block ultraviolet rays in the sun's rays and protect the skin from the adverse effects of ultraviolet rays, and their base is an oil-in-water emulsified cosmetic that has an aqueous component as the outer phase (continuous phase). Examples include an emulsified type of water-in-oil emulsified cosmetics having an oily component as an outer phase (continuous phase) and a non-emulsified type of oily cosmetics.

Regardless of the type, in order to block UV irradiation to the skin and obtain a high SPF (Sun Protection Factor) value, it is necessary to add a high amount of solid UV absorbers and UV scatterers to sunscreen cosmetics. is there. In order to add a solid ultraviolet absorber or an ultraviolet scattering agent, it is necessary to add a high amount of oil, but if the amount of oil is high, stickiness cannot be suppressed.

From this point of view, attempts have been made to achieve a high SPF value without adding an ultraviolet scattering agent, and in a water-in-oil emulsified cosmetic, a dextrin fatty acid ester and / or a sucrose fatty acid ester is added to the oil content. It is described that a high SPF value can be achieved by this (Patent Document 1).

Further, in the oil-in-water emulsified cosmetic, Patent Document 2 describes that a high SPF value can be achieved by blending a specific solid oil and / or a semi-solid oil. Further, Patent Document 3 describes that the SPF value can be enhanced by blending an alkyl-modified silicone resin wax.

On the other hand, as for oil-based cosmetics, Patent Document 4 describes an external preparation for skin in which the ultraviolet protection effect is enhanced by blending a silicone elastomer type surfactant. Although oil-based cosmetics have the advantage of being rich, they have the essential problem of being sticky when turned inside out. As one of the means for eliminating this stickiness, a method of blending an elastomer with a cosmetic is known. For example, Patent Document 5 describes an oil-based cosmetic containing a silicone elastomer.

Japanese Unexamined Patent Publication No. 2011-126832 JP-A-2017-66140 International Publication No. 2018/6469 JP 2015-83561 Special Table 2013-501795

As a result of diligent studies by the present inventor, it has been found that when a silicone elastomer is blended, the stickiness of the oil-based cosmetics is suppressed, but the SPF value is lowered.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a non-emulsifying oil-based cosmetic which can enhance the SPF value even if an elastomer is blended and has excellent usability. Is.

The non-emulsifying oil-based cosmetic of the present invention
With non-emulsifying silicone elastomer,
UV absorber and
With 0.5 to 3% by mass of wax,
Is included.

The non-emulsifying silicone elastomer is preferably a dimethicone crosspolymer.

The hardness of the non-emulsifying oil-based cosmetic is preferably 1 to 25 g.

The melting point of the wax is preferably 60 to 95 ° C.

The wax is preferably a hydrocarbon wax.

The non-emulsifying silicone elastomer is preferably a diluted isododecane.

The non-emulsifying oily cosmetic of the present invention preferably further contains a silicone elastomer type surfactant.

The content of the non-emulsifying silicone elastomer is preferably 1 to 7% by mass with respect to the total amount of the cosmetic.

The non-emulsifying oil-based cosmetic of the present invention
With non-emulsifying silicone elastomer,
UV absorber and
With 0.5 to 3% by mass of wax,
Since it contains, it is possible to increase the SPF value even if an elastomer is blended, and it is possible to make it excellent in usability.

FIG. 1 shows the measurement results of the ultraviolet absorption spectra of the cosmetics of Example 1, Comparative Example 1 and Comparative Example 2. Abs. On the vertical axis. Is an abbreviation for Absorbance.

The non-emulsifying oily cosmetic (hereinafter, also simply referred to as cosmetic) of the present invention contains a non-emulsifying silicone elastomer, an ultraviolet absorber, and 0.5 to 3% by mass of wax.
Hereinafter, each component will be described in detail.

(Non-emulsifying silicone elastomer)
Non-emulsifying silicone elastomer means that the silicone elastomer is free of polyoxyalkylene groups.
Hereinafter, the non-emulsifying silicone elastomer is also simply referred to as a silicone elastomer.

Examples of the silicone elastomer include dimethicone crosspolymer, vinyl-modified dimethicone crosspolymer, specifically, (dimethicone / phenylvinyldimethicone) crosspolymer, (dimethicone / vinyldimethicone / methicone) crosspolymer, (dimethicone / vinyldimethicone). Cross-polymers, cross-polymers such as (diphenyldimethicone / vinyldiphenyldimethicone / silsesquioxane) cross-polymers can be mentioned. These silicone elastomers may be used alone or in combination of two or more.

The silicone elastomer may be blended in the form of a silicone gel composed of a crosslinked silicone resin powder and a solvent. Commercially available products can be used for such silicone gels, for example, Dowsil EL-8048 (manufactured by Toray Dow Corning, isododecane diluent, isododecane about 83.5 to 86.5%, dimethicone crosspolymer about 13. 5 to 16.5%), Dowsil 9041 (manufactured by Toray Dow Corning, dimethicone about 84.0%, dimethicone crosspolymer about 16.0%), KSG-18A, KSG-16, KSG-15AP (above, Shinetsu) (Manufactured by Chemical Industry Co., Ltd.), Elastomer Blend DC9045 (manufactured by Toray Dow Corning Co., Ltd.) and the like.

The content of the silicone elastomer in the cosmetic of the present invention is preferably 0.5 to 10% by mass, more preferably 1 to 8% by mass, and further 1.2 to 7% by mass with respect to the total amount of the cosmetic. Is preferable. When the content is 0.5% by mass or more, the ultraviolet protection effect can be further enhanced, and when it is 10% by mass or less, a better usability can be obtained. The solvent contained in the silicone gel as a solvent is removed from the content of the silicone elastomer referred to here.

(UV absorber)
Examples of the ultraviolet absorber include benzoic acid-based ultraviolet absorbers (for example, paraaminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N, N-dipropoxy PABA ethyl ester, N, N-diethoxyPABA ethyl ester). , N, N-dimethyl PABA ethyl ester, N, N-dimethyl PABA butyl ester, N, N-dimethyl PABA ethyl ester, etc.); Anthranic acid-based ultraviolet absorber (for example, homomentyl-N-acetylanthranilate, etc.); Salicylic acid-based UV absorbers (eg, amyl salicylate, menthyl salicylate, homomentyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, p-isopropanol phenyl salicylate, etc.); cinnamic acid-based UV absorbers (eg, octyl cinnamate, ethyl- 4-Isopropyl cinnamate, methyl-2,5-diisopropyl cinnamate, ethyl-2,4-diisopropyl cinnamate, methyl-2,4-diisopropyl cinnamate, propyl-p-methoxy cinnamate, isopropyl-p-methoxy cinnamate Mates, isoamyl-p-methoxycinnamates, octyl-p-methoxycinnamates (2-ethylhexyl-p-methoxycinnamates), 2-ethoxyethyl-p-methoxycinnamates, cyclohexyl-p-methoxycinnamates, ethyl- α-Cyano-β-phenylcinnamate, 2-ethylhexyl-α-cyano-β-phenylcinnamate, glycerylmono-2-ethylhexanoyl-diparamethoxycinnamate, etc.); benzophenone-based ultraviolet absorbers (eg, 2) , 4-Dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2', 4,4'-tetrahydroxybenzophenone, 2-hydroxy -4-Methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone -2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, 4-hydroxy-3-carboxybenzophenone, etc.); 3- (4'-methylbenzylidene) -d, l-camper, 3-venge Reden-d, l-Phenyl; 2-phenyl-5-methylbenzoxazole; 2,2'-hydroxy-5-methylphenylbenzotriazole; 2- (2'-hydroxy-5'-t-octylphenyl) benzo Triazole; 2- (2'-hydroxy-5'-methylphenylbenzotriazole;dibenzalazine;dianisoilmethane;4-methoxy-4'-t-butyldibenzoylmethane; 5- (3,3-dimethyl-2-norbornylidene) ) -3-Pentan-2-one and the like.

In addition, triazine derivatives, specifically 2,4-bis-{[4- (2-ethylhexyloxy) -2-hydroxy] phenyl} -6- (4-methoxyphenyl)-(1,3,5) -Triazine (Tinosorb S), 2,4,6-tris [4- (2-ethylhexyloxycarbonyl) anilino] 1,3,5-triazine (Ubinal T150) and the like are preferably mentioned.
Further, as the dibenzoylmethane derivative, 4-tert-butyl-4'-methoxydibenzoylmethane (for example, "Pulsol 1789") and the like are preferably mentioned.
Examples of the benzylidene sulphonate derivative include 3-benzylidene sulphonate (for example, "Mexoryl SD"; Simex), 4-methylbenzylidene sulphonate, benzylidene sulphonic acid (for example, "Megizolyl SL"; Simex), and metholsulfate. Benzylconium (eg, "Megisolyl SO"; Simex), terephthalilidene dishonosulfonic acid (eg, "Megizolyl SX"; Simex), polyacrylamide methylbenzylideneshonow (eg, "Megisolyl SW"; Simex), etc. are preferred. Can be mentioned.

The content of the ultraviolet absorber is preferably in the range of 9 to 25% by mass, more preferably in the range of 9 to 20% by mass, based on the total amount of the cosmetic. When the content of the ultraviolet absorber is 9% by mass or more, the ultraviolet protection effect can be more sufficient. Further, by setting the content to 25% by mass or less, a lighter feeling of use can be obtained.

(wax)
Examples of the wax include solid fats and oils, waxes, hydrocarbons, and higher alcohols. For example, solid fats and oils such as mokuro, cacao butter, and hardened castor oil; waxes such as carnauba wax, beeswax, candelilla wax, and jojoba wax: hydrocarbon waxes such as polyethylene wax, paraffin wax, ceresin, and microcrystalin wax; behenyl alcohol, setanol, Higher alcohols such as bacil alcohol; silicon wax and the like are exemplified.

The melting point of the wax is preferably 60 to 95 ° C. When the melting point is 60 ° C. or higher, the ultraviolet protection effect can be expected more, and when the melting point is 95 ° C. or lower, the preparation can be prepared without impairing the usability of the silicone elastomer.

Among the above waxes, hydrocarbon waxes such as polyethylene wax, paraffin wax, and microcrystalline wax are more preferable from the viewpoint of ultraviolet protection effect.

The content of wax in the cosmetics is preferably 0.5 to 5% by mass, more preferably 0.8 to 4% by mass, based on the total amount of the cosmetics. When the amount of wax is 0.5% by mass or more, the ultraviolet protection effect can be expected more. Further, when it is 5% by mass or less, an appropriate oily feeling can be obtained.

The hardness of the cosmetic of the present invention is preferably 1 to 25 g. More preferably, it is 5 to 24 g. Here, the hardness means what was measured at room temperature (25 ° C.) using a card meter (manufactured by Ai Techno Engineering Co., Ltd., pressure sensitive shaft 11.3 mmΦ / 200 g load value). When the hardness is 1 g or more and 25 g or less, usability can be further improved.

The viscosity of the cosmetic of the present invention is preferably 10,000 mPa · s or more, and more preferably 12000 mPa · s or more at 30 ° C. When the viscosity is 10,000 mPa · s or more, usability can be further improved.

(Silicone elastomer type surfactant)
The cosmetic of the present invention may contain a silicone elastomer type surfactant. As the silicone elastomer type surfactant used in the present invention, polyether-modified silicone having a polyoxyalkylene structure introduced into a silicone skeleton is preferably used. For example, a crosslinked product obtained by cross-linking a silicone chain with a polyoxyalkylene chain, or a side chain type polyether-modified silicone in which a polyoxyalkylene group is introduced as a side chain into the silicone chain is preferable.

Specific examples of the silicone elastomer type surfactant include polyether modifications such as PEG-10 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, and lauryl PEG-15 polydimethylsiloxyethyl dimethicone. Examples thereof include crosslinked polyether-modified silicones such as silicone, (dimethicone / (PEG10 / 15)) crosspolymer, and (dimethicone / polyglycerin-3) crosspolymer, and one or more of these are mixed and blended. You can also do it. PEG is polyethylene glycol.

Further, the silicone elastomer type surfactant may be blended in the form of a silicone gel composed of the surfactant and a solvent, and a commercially available silicone gel can be used. For example, KSG-210, KSG-710, KSG-360Z (all manufactured by Shin-Etsu Chemical Co., Ltd.) and the like are exemplified.

The content of the silicone elastomer type surfactant is usually 0.05 to 20% by mass, preferably 0.1 to 10% by mass, and more preferably 0.5 to 5% by mass. When the content is 0.05% by mass or more, the stability of the preparation can be further improved, and when it is 20% by mass or less, the usability can be further improved. The oil contained in the silicone gel as a solvent is classified as an oil and is removed from the content of the silicone elastomer type surfactant.

(Oil)
The cosmetic of the present invention may contain oils used in ordinary cosmetics other than the above essential ingredients, and is not particularly limited. Specific examples include liquid fats and oils such as avocado oil, camellia oil, macadamia nut oil, mink oil, olive oil, castor oil, jojoba oil, triglycerin, and glycerin trioctanoate; lauric acid, myristic acid, palmitic acid, stearic acid, and bechenic acid. , Oleic acid, 12-hydroxystearic acid, isostearic acid, linoleic acid, linoleic acid and other higher fatty acids; lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, oleyl alcohol, monostearylglycerol ether, monopalmitylglycerol ether, Higher alcohols such as cholesterol, phytosterol, isostearyl alcohol; isopropyl myristate, cetyl octanoate, octyldodecyl myristate, butyl stearate, decyl oleate, ethylene glycol dioctanoate, subisostearyl malate, trimethylolpropane trioctanoate, Ester oils such as trimethylolpropane triisostearate, pentaolithritol tetraoctanoate, glycerin trioctanoate, glycerin triisostearate, ethyl acetate, butyl acetate, amyl acetate; dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogen Polysiloxane, decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, silicone resin forming a three-dimensional network structure, silicone rubber, various modified polysiloxanes (amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified poly Siloxane) Silicone oils such as siloxane, fluorine-modified polysiloxane, etc.) can be mentioned, and one or more selected from these can be used.

In addition to the above-mentioned components, the cosmetics of the present invention include components usually used in cosmetics, such as powder components, moisturizers, water-soluble polymers, film agents, and metal ion blocking agents, as long as the effects of the present invention are not affected. , Lower alcohols, polyhydric alcohols, sugars, amino acids, organic amines, polymer emulsions, pH adjusters, skin nutrients, vitamins, antioxidants, antioxidants, bactericidal preservatives, other chemicals, pigments, fragrances, etc. Can be blended and manufactured according to a conventional method.

Powder components include, for example, mica, talc, kaolin, sericite (silk mica), muscovite, gold mica, synthetic mica, red mica, black mica, lithia mica, synthetic mica, calcium carbonate, magnesium carbonate, silicic anhydride. (Silica), aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, aluminum oxide, barium sulfate, red iron oxide, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, dark blue, titanium oxide, Examples thereof include zinc oxide, mica titanium (titanium oxide coated mica), fish phosphorus foil, bismuth oxychloride, boron nitride, red 228, red 226, and blue 404.

In particular, it is preferable to add a resin powder because the feeling of use and the like are further improved. As the resin powder, for example, silicone resin powder, urethane resin powder, polyamide resin powder (nylon powder), acrylic rubber, polyolefin rubber, polyester rubber and the like are preferably mentioned.

Examples of the silicone resin powder include polysilicone-22 and polysilicone-1 crosspolymer [commercially available products such as KSP-411 and KSP-441) (both manufactured by Shin-Etsu Chemical Industry Co., Ltd.)], ((Vinyl dimethicon / methiconcil). Sesquioxane) Crosspolymer [Commercial products such as "KSP-100", "KSP-101", "KSP-102", "KSP-105" (all manufactured by Shin-Etsu Chemical Industry Co., Ltd.)], (Dimethicone / Vinyl Dimethicone) Cross Polymer [Commercial products such as "Trefil E-506S", "Trefil E-508" (all manufactured by Toray Dow Corning), "KM-9729" (manufactured by Shinetsu Chemical Industry Co., Ltd.), etc. Cross-linked silicone resin powder, polymethylsilsesquioxane powder [commercially available, for example, "KMP-590" (manufactured by Shin-Etsu Chemical Industry Co., Ltd.)], organopolysiloxane elastomer powder [commercially available, for example, "Trefil E-701" (Manufactured by Toray Doukonig Silicone Co., Ltd.)], spherical silicone resin fine particles [commercially available products such as "Tospearl 120" and "Tospearl 145A" (all manufactured by Tanac Co., Ltd.)] and the like. Further, it is also possible to use "BY29-119", "BY29-129" (both manufactured by Toray Dow Corning Co., Ltd.), which are aqueous dispersions of (dimethicone / vinyldimethicone) crosspolymer.

Examples of the urethane resin powder include "Plastic Powder D-400" (manufactured by Toiro Pigment Co., Ltd.) and the like. Examples of the polyamide resin powder (nylon powder) include "Nylon SP-20" (manufactured by Toray Dow Corning Silicone Co., Ltd.).

The form of the cosmetic of the present invention is not particularly limited, and basic cosmetics such as milky lotion, cream, gel, and essence (beauty essence), makeup cosmetics such as lipstick, eye shadow, eyeliner, mascara, foundation, and sunscreen, and oral cosmetics. , Aromatic cosmetics, hair cosmetics, body cosmetics, etc., any form conventionally used for oil-based cosmetics can be widely applied.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples. In addition, the blending amount in the following examples and the like shows mass% unless otherwise specified.

(Examples 1 to 3 and Comparative Examples 1 to 3)
According to the formulation shown in Table 1, a surfactant, wax, UV (ultraviolet) absorber, elastomer, and usability powder were added to the oil and mixed to prepare a cosmetic.

(Example 4, Comparative Example 4)
Cosmetics were prepared according to the formulations shown in Table 2 (the type of elastomer was changed).

(Examples 5 to 8)
Cosmetics were prepared according to the formulations shown in Table 3 (the type of wax and the amount of elastomer were changed).

The viscosity and hardness of the prepared cosmetics were determined as follows. In addition, the usability of the prepared cosmetics and the rate of increase in UV absorption were evaluated according to the following criteria. The results are shown in Tables 1 to 3 below together with the prescription. In addition, the ultraviolet absorption spectra measured for the cosmetics of Example 1, Comparative Example 1 and Comparative Example 2 are shown in FIG.

(viscosity)
The prepared cosmetics were measured at 30 ° C. using a BH viscometer (Rotor No. 6, 10 rpm manufactured by Shibaura Semtech Co., Ltd.).

(hardness)
The prepared cosmetics were measured at 25 ° C. using a card meter (manufactured by Ai Techno Engineering Co., Ltd., pressure sensitive shaft 11.3 mmΦ / 200 g load value).

(Usage)
Ten specialized panelists applied the prepared cosmetics to the skin and evaluated the feeling of use.
<Evaluation points>
5 points: rich and almost no oiliness 4 points: rich and less oily 3 points: slightly inferior or slightly oily 2 points: less rich and oily 1 point : Rich and oily <Evaluation criteria>
A +: Average score is 4.5 points or more A: Average score is 4.0 or more and less than 4.5 B: Average score is 3.5 points or more and less than 4.0 points C: Average score is 2.5 points or more 3. Less than 5 points D: Average score is less than 2.5 points

(UV absorption increase rate)
The obtained cosmetic was applied to a PMMA substrate, and the absorbance at 280-400 nm was measured and integrated. In Examples 1 to 3 and Examples 5 to 8, the integrated value of Comparative Example 2 (baseline) was set to 100. The relative values were evaluated according to the following criteria. Further, Example 4 was evaluated according to the following criteria based on a relative value with the integrated value of Comparative Example 4 (baseline) as 100.
A +: UV absorption increase rate higher than 30% A: UV absorption increase rate higher than 20% and 30% or less B: UV absorption increase rate higher than 10% and 20% or less C: UV absorption increase rate higher than 0% and 10% or less D : UV absorption below baseline

The details of the components shown in Tables 1 to 3 are as follows.
* 1: Manufactured by Shin-Etsu Chemical Co., Ltd., Ingredients: Dimethicone approx. 75.48%, (Dimethicone / (PEG-10 / 15)) Crosspolymer approx. 24%, Dipropylene glycol approx. 0.5%, Tocopherol approx. 0.02%
* 2: Made by Shin-Etsu Chemical Co., Ltd., Ingredients: PEG-10 dimethicone approx. 99.98%, tocopherol approx. 0.02%
* 3: Made by Shin-Etsu Chemical Co., Ltd., Ingredients: Approximately 100% dimethicone
* 4: Made by Shin-Etsu Chemical Co., Ltd., Ingredients: Approximately 100% dimethicone
* 5: Made by Nippon Unicar Co., Ltd. Ingredients: Caprylyl methicone approx. 99.95%, tocopherol approx. 0.05%
* 6: Made by Shin-Etsu Chemical Co., Ltd., Ingredients: Diphenylsiloxyphenyltrimethicone Approx. 100%
* 7: Made by Maruzen Petrochemical Co., Ltd., Ingredients: Approximately 100% isododecane
* 8: Made by Toray Dow Corning, Ingredients: Approximately 100% methylpolysiloxane
* 9: Made by Toray Dow Corning, Ingredients: Alkyl (C30-45) methicone approx. 54%, Olefin (C30-45) approx. 46%
* 10: Made by Nikko Rika, Ingredients: Microcrystalline wax approx. 99.99%, Tocopherol approx. 0.01%
* 11: Polyethylene manufactured by Nikko Rika Kogyo Co., Ltd., Ingredients: Polyethylene approx. 73.9991712%, Microcrystalline wax approx. 25.99997088, Dibutylhydroxytoluene approx. 0.0008%, Tocopherol approx. 0.00032%
* 12: Made by Nippon Seiro Co., Ltd., Ingredients: Approximately 100% synthetic wax
* 13: Made by BASF Japan, Ingredients: Ethylhexyl methoxycinnamate approx. 99.93%, BHT approx. 0.07%
* 14: Made by BASF Japan, Ingredients: Approximately 100% octocrylene
* 15: Made by BASF Japan, Ingredients: Bisethylhexyloxyphenol Methoxyphenyltriazine Approx. 100%
* 16: Made by DSM, Ingredients: Polysilicone-15 Approximately 100%
* 17: Made by Shin-Etsu Chemical Co., Ltd., Ingredients: Polysilicone-22 Approx. 100%
* 18: Made by Shin-Etsu Chemical Co., Ltd. Ingredients: (Vinyldimethicone / Meticone silsesquioxane) Approximately 100% cross polymer
* 19: Made by Toray Dow Corning, Ingredients: Isododecan approx. 83.5-86.5%, Dimethicone crosspolymer approx. 13.5-16.5%
* 20: Made by Toray Dow Corning, Ingredients: Dimethicone approx. 84.0%, Dimethicone crosspolymer approx. 16.0%

As shown in Table 1 and FIG. 1, the cosmetic of the present invention of Example 1 had a good UV absorption increase rate (effect of enhancing SPF) and a good usability. On the other hand, Comparative Example 1 containing neither wax nor elastomer had a poor usability, and Comparative Example 2 containing wax had a good usability, but UV absorption was reduced because it did not contain an elastomer. In Examples 2 and 3, the amount of wax was changed, but both the feeling of use and the rate of increase in UV absorption were satisfactory. On the other hand, in Comparative Example 3 in which the amount of wax contained was as large as 5.0% by mass, the usability was deteriorated and the rate of increase in UV absorption was also reduced.

In Example 4 of Table 2, the type of elastomer was changed, but the effect of enhancing SPF was observed as compared with Comparative Example 4 in which the same elastomer was used.

Examples 5 to 7 in Table 3 changed the type of wax, but all of them were satisfactory in terms of usability and UV absorption increase rate. In Example 8, the amount of elastomer was changed to half that of Example 1 (the actual content of 42.0% by mass of the elastomer in the table is 5.6 to 6.93% by mass, and 21.0% by mass of the elastomer. The actual amount was 2.8 to 3.5% by mass), and even in this case, both the usability and the rate of increase in UV absorption were satisfactory.

Claims (8)

With non-emulsifying silicone elastomer,
UV absorber and
With 0.5 to 3% by mass of wax,
Non-emulsifying oil-based cosmetics including. The non-emulsifying oil-based cosmetic according to claim 1, wherein the non-emulsifying silicone elastomer is a dimethicone cross polymer. The non-emulsifying oil-based cosmetic according to claim 1 or 2, which has a hardness of 1 to 25 g. The non-emulsifying oil-based cosmetic according to claim 1, 2 or 3, wherein the wax has a melting point of 60 to 95 ° C. The non-emulsifying oil-based cosmetic according to any one of claims 1 to 4, wherein the wax is a hydrocarbon wax. The non-emulsifying oil-based cosmetic according to any one of claims 1 to 5, wherein the non-emulsifying silicone elastomer is a diluted solution of isododecane. The non-emulsifying oil-based cosmetic according to any one of claims 1 to 6, further comprising a silicone elastomer type surfactant. The non-emulsifying oil-based cosmetic according to any one of claims 1 to 7, wherein the content of the non-emulsifying silicone elastomer is 1 to 7% by mass with respect to the total amount of the cosmetic.