JP2012136453A - Ultraviolet-blocking skin cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide excellent spreading ultraviolet-blocking skin cosmetic having light feeling and excellent spreadability in use, quickly fitting to the skin, and hardly causing sticky feeling or squeaky feeling after use while rarely giving dry feeling and occlusion feeling to the skin and giving excellent gloss and transparency to the skin.SOLUTION: The ultraviolet-blocking skin cosmetic comprises: (a) 1-15 mass% of a microcapsule polysilicone having an average particle diameter of 0.1-10 μm which contains an ultraviolet absorber; (b) 1-13 mass% of a monoester; (c) 0.1-15 mass% of a cyclic polysiloxane; and (d) 0.1-5 mass% of methylpolysiloxane whose viscosity is 10-1,000 mm/s.

Description

  The present invention is light and stretchy when used, quickly adapts to the skin, hardly feels sticky or creaked after use, gives almost no clogging or dryness to the skin, gives the skin a glossy and transparent feel, makeup The present invention relates to a skin care composition for preventing UV rays with a good paste.

  When ultraviolet rays hit the skin, it generates active oxygen and lipid peroxide, which has an adverse effect. Ultraviolet rays are divided into A wave, B wave, and C wave depending on the wavelength region. The C wave (100 to 290 nm) in the shortest wavelength region has a large energy, but is almost absorbed before reaching the ground surface. On the other hand, the A wave (320 to 400 nm) and the B wave (290 to 320 nm) reach the earth's surface and adversely affect the skin. The A wave reaches the inside of the skin and causes wrinkles, and the B wave temporarily causes a slight burn on the surface of the skin and blackens the skin.

  In order to prevent such adverse effects due to ultraviolet rays, ultraviolet scattering agents such as titanium oxide and zinc oxide, and ultraviolet absorbers such as benzophenone derivatives are useful. It has been developed (Patent Documents 1 and 2).

  However, the ultraviolet light scattering agent does not provide a cosmetic material that is sufficiently satisfactory in use feeling, such as giving a heavy feeling during use, a squeaky feeling, a dry feeling and a clogging feeling after use, and a white finish. In order to solve these problems, fine particles of UV scattering agents and those coated on the surface have been developed, but cosmetics that are sufficiently satisfactory in terms of use feeling have not been obtained, Safety to the skin has been discussed (Patent Document 3).

  On the other hand, ultraviolet absorbers give a peculiar odor and heavy feel at the time of use, stickiness and roughness after use, and give a bad image to consumers because it is a chemical synthetic product derived from petroleum. Furthermore, as described in the positive list, safety on the skin is discussed. Therefore, there has been proposed a skin cosmetic for preventing ultraviolet rays by encapsulating an ultraviolet absorbent so that the ultraviolet absorbent does not directly contact the skin and does not adversely affect the skin (Patent Documents 4 and 5).

  According to these UV-preventing skin cosmetics, encapsulating the UV absorber improves the safety of the cosmetics because penetration into the skin is reduced, and improves compatibility with other ingredients. Therefore, there is an advantage that it can be easily blended into cosmetics, and the stability of the encapsulated ultraviolet absorber is improved, so that it is not necessary to add a stabilizer. However, cosmetics containing this encapsulated ultraviolet absorber were not fully satisfactory in use feeling such as feeling during use, stickiness and squeak after use, feeling of blockage, and feeling of dryness.

JP-A-8-259419 JP 2010-111626 A JP 2008-208044 A JP 2001-106612 A JP 2006-176449 A

  The purpose of the present invention is that it feels light and stretches easily during use, quickly adapts to the skin, does not feel sticky or creased after use, gives the skin almost no blockage or dryness, and gives the skin a gloss and transparency. An object of the present invention is to provide a UV cosmetic skin cosmetic with a good makeup.

  In order to solve the above-mentioned problems, the present inventors have repeated research, and identified (a) microcapsules encapsulating an ultraviolet absorber, (b) monoesters, and (c) and (d) each silicone. By combining the ratios, it was found that the intended skin cosmetic was obtained, and the present invention was completed.

That is, the skin cosmetic of the present invention comprises (a) 1 to 15% by mass of a microcapsule of polysilicon having an average particle diameter of 0.1 to 10 μm encapsulating an ultraviolet absorber, and (b) a monomony represented by the formula (I). 1 to 13% by mass of an ester, (c) 0.1 to 15% by mass of a cyclic polysiloxane represented by the formula (II), and (d) a methyl polysiloxane having a viscosity of 10 to 1,000 mm ² / s. It is a skin cosmetic for preventing ultraviolet rays, containing 5% by mass.

（式中、Ｒ_１ＣＯは炭素数が４〜２２のアシル基、Ｒ_２は炭素数が４〜２２のアルキル基で、１７≦Ｒ_１＋Ｒ_２≦３５である。）

(In the formula, R ₁ CO is an acyl group having 4 to 22 carbon atoms, R ₂ is an alkyl group having 4 to 22 carbon atoms, and 17 ≦ R ₁ + R ₂ ≦ 35.)

(Where n is a value from 3 to 6)

  The skin care composition for preventing UV rays of the present invention may contain (e) 0.1 to 5% by mass of trimethylsiloxysilicic acid as necessary.

  The skin protection composition for preventing UV rays of the present invention has a light feel and good stretch at the time of use, quickly adapts to the skin, hardly feels sticky or squeaked after use, hardly gives the skin a feeling of occlusion or dryness, and glosses the skin. Gives a sense of transparency and good makeup.

  Embodiments of the present invention will be described below. The skin care material for preventing ultraviolet rays of the present invention contains (a) microcapsules encapsulating an ultraviolet absorber, (b) monoester, and (c) and (d) silicones in specific ratios. These components will be described sequentially.

[(A) Polysilicone microcapsules with an average particle size of 0.1 to 10 μm encapsulating an ultraviolet absorber]
(A) A microcapsule encapsulating an ultraviolet absorber used in the skin cosmetic for preventing ultraviolet rays according to the present invention is obtained by encapsulating an ultraviolet absorber having ultraviolet absorptivity with a silicone that transmits ultraviolet rays to form a microcapsule. The microcapsules have an average particle size of 0.1 to 10 μm.

  Examples of ultraviolet absorbers include 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate sodium, dihydroxydimethoxybenzophenone-sodium sulfonate, 2,4-diphodoxybenzophenone, tetrahydroxybenzophenone , Paraaminobenzoic acid, ethyl paraaminobenzoate, glyceryl paraaminobenzoate, amyl paradimethylaminobenzoate, octyl paradimethylaminobenzoate, hexyl diethylaminohydroxybenzoylbenzoate, ethyl paramethoxycinnamate, isopropyl paramethoxycinnamate, paramethoxy 2-ethylhexyl cinnamate, sodium paramethoxycinnamate, potassium paramethoxycinnamate, mono-2-ethyl diparamethoxycinnamate Glyceryl xanthate, octyl salicylate, phenyl salicylate, homomenthyl salicylate, dipropylene glycol salicylate, ethylene glycol salicylate, myristyl salicylate, methyl salicylate, urocanic acid, ethyl urocanate, 4-tert-butyl-4'-methoxydibenzoylmethane, 2 -(2'-Hydroxy-5'-methylphenyl) benzotriazole, methyl anthranilate, octyl triazone, etc. are mentioned, At least 1 or more types chosen from these are included in a microcapsule. In particular, it is preferable to use 2-methoxyhexyl paramethoxycinnamate effective for absorbing UVB waves and 4-tert-butyl-4'-methoxydibenzoylmethane effective for absorbing UVA waves. (A) As a microcapsule encapsulating an ultraviolet absorber, “SILASOMA (registered trademark) MEA (L)”, “SILASOMA (registered trademark) ME” manufactured by Seiwa Kasei Co., Ltd., etc. may be used as a commercially available product. it can.

  The microcapsules encapsulating the component (a) UV absorber is 1 to 15% by mass, preferably 1.5 to 13% by mass, and more preferably 3 to 10% by mass in the skin cosmetic for preventing UV rays. included. When the amount is less than 1% by mass, the ultraviolet protection property is deteriorated. When it exceeds 15% by mass, it feels heavy during use and gives a squeaky feeling.

[(B) Monoester]
The (b) monoester used in the UV-preventing skin cosmetic of the present invention is represented by the formula (I), in which R ₁ CO is an acyl group having 4 to 22 carbon atoms, and R ₂ has a carbon number. It is an alkyl group of 4 to 22, and 17 ≦ R ₁ + R ₂ ≦ 35. When R ₁ + R ₂ is less than 17, familiarity with the skin is delayed. When R ₁ + R 2 exceeds 35, a squeaky feeling or a blockage feeling is given.

  Examples of the monoester include isodecyl neopentanoate, isostearyl neopentanoate, cetyl octanoate, cetyl ethylhexanoate, 2-ethylhexanoate-2-hexyldecyl, 2-nononyl isononanoate, isononyl isononanoate, isononyl isononanoate , Isotridecyl isononanoate, octyldodecyl neodecanoate, hexyldecyl dimethyloctanoate, hexyl laurate, myristyl myristate, 2-hexyldecyl myristate, octyldodecyl myristate, octyl palmitate, 2-ethylhexyl palmitate, palmitic acid Cetyl, 2-hexyldecyl palmitate, isostearyl palmitate, 2-heptyl undecyl palmitate, butyl stearate, isotearate Chill, isostearic acid 2-hexyl decyl, stearyl stearate, isostearyl isostearate, and the like isostearic acid octyl dodecyl. In particular, it is preferable to use those having a branched alkyl group such as isodecyl isononanoate and ethylhexyl palmitate from the viewpoint of improving the squeaky feeling and the occlusion feeling.

  (B) The monoester which is a component is contained in the skin cosmetic for preventing ultraviolet rays in an amount of 1 to 13% by mass, preferably 2 to 10% by mass, more preferably 3 to 8% by mass. When the amount is less than 1% by mass, a squeaky feeling or a dry feeling is given, and the effect of giving gloss to the skin after use is weakened. When it exceeds 13% by mass, the feeling during use is heavy and the stickiness becomes strong.

[(C) Cyclic polysiloxane]
(C) The cyclic polysiloxane used in the skin cosmetic for preventing ultraviolet rays of the present invention is represented by the formula (II), and n in the repeating unit is 3 to 6.

  Examples of the cyclic polysiloxane include decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane. In particular, decamethylcyclopentasiloxane is preferable from the point of use and familiarity with the skin.

  The cyclic polysiloxane as the component (c) is contained in the UV-preventing skin cosmetic in an amount of 0.1 to 15% by mass, preferably 1 to 13% by mass, and more preferably 2 to 10% by mass. When the amount is less than 0.1% by mass, the feeling during use is heavy and the familiarity with the skin becomes slow. When it exceeds 15 mass%, a dry feeling is given and the effect which gives a transparent feeling to skin becomes weak.

[(D) methylpolysiloxane]
The (d) methylpolysiloxane used in the skin care composition for preventing UV rays of the present invention is a polymer compound having a viscosity of 10 to 1,000 mm ² / s with a siloxane bond having a methyl group in the side chain as the main skeleton. . Methylpolysiloxane generally, although a wide range until a viscosity from 5 mm ² / s of about 1,000,000 mm ² / s, in the case of less than 10 mm ² / s, would give dry feeling to the skin, gloss and clarity The effect of giving and improving makeup is weakened. When it is larger than 1,000 mm ² / s, the feeling at the time of use is heavy and gives a sticky feeling or a feeling of blockage after use.

  The component (d), methylpolysiloxane, is contained in the UV-preventing skin cosmetic in an amount of 0.1 to 5% by mass, preferably 0.5 to 4% by mass, and more preferably 1 to 3% by mass. When the amount is less than 0.1% by mass, the skin is given a dry feeling, and the effect of giving gloss and transparency and the effect of improving the makeup are weakened. When it exceeds 5% by mass, the skin is not familiar and gives a feeling of stickiness and blockage.

  Furthermore, the following (e) component is blended in the skin cosmetic for preventing ultraviolet rays of the present invention in order to further improve the effect of giving gloss and transparency to the skin after use, and to improve the makeup flesh and makeup lasting. can do.

[(E) Trimethylsiloxysilicate]
The component (e), trimethylsiloxysilicic acid, is an oil-soluble resin having a cross-linked structure with a siloxane bond as the main skeleton, and is used as a film forming agent for hair cosmetics and eye makeup cosmetics. As a commercially available product, “silicone KF-7312J” manufactured by Shin-Etsu Chemical Co., Ltd. can be used.

  Component (e) is contained in the skin cosmetic for preventing ultraviolet rays in a proportion of 0.1 to 5% by mass, preferably 0.2 to 4% by mass, more preferably 0.3 to 3% by mass. .

  In order to improve stability, the skin cosmetic for preventing ultraviolet rays of the present invention can use a surfactant or a thickener. Examples of the surfactant include a cationic surfactant, an anionic surfactant, an amphoteric surfactant, and a nonionic surfactant, and it is particularly preferable to use a nonionic surfactant. A water-soluble polymer is mainly used as the thickener.

  Examples of a general method for preparing the UV-preventing skin cosmetic of the present invention using the surfactant or thickener include, for example, an aqueous phase containing a water-soluble polymer and an oil containing a nonionic surfactant. A method is used in which the phases are heated and stirred, and both are mixed using a homomixer or the like.

  It is also possible to add an additive commonly used in cosmetics and pharmaceuticals to the UV-preventing skin cosmetic of the present invention as long as the effects of the present invention are not impaired.

  The dosage form of the UV cosmetic skin cosmetic is not particularly limited. For example, any dosage form such as lotion, milky lotion, gel, cream, etc. can be taken, and any form such as a form impregnated in a non-woven fabric can be used. Form may be sufficient.

  Next, the present invention will be described in more detail with reference to examples and comparative examples. In addition, the following% means the mass%.

[Examples 1-7, Comparative Examples 1-9]
As component (a), “SILASOMA MEA (L)” or “SILASOMA ME” manufactured by Seiwa Kasei Co., Ltd., which is a 60% aqueous dispersion of microcapsules encapsulating an ultraviolet absorber, was used. “SILASOMA MEA (L)” contained paramethoxycinnamic acid-2-ethylhexyl and 4-tert-butyl-4′-methoxydibenzoylmethane, and “SILASOMA ME” contained paramethoxycinnamic acid-2-ethylhexyl. Polysilicone microcapsules. “SILASOMA MEA (L)” and “SILASOMA ME” both have an average particle size of 2 μm.
Further, using the components shown in Tables 2 and 3 as the components (b) to (e), and further using the common additive components shown in Table 1, a UV cosmetic skin cosmetic was prepared by the following method.

  In an aqueous phase containing a thickener and a preservative in ion-exchanged water and a common additive component, and (b) component, (c) component, (d) component, (e) component, and other oily components and a common additive component Each of the oil phases containing the surfactant was heated to 75 to 80 ° C. and mixed using a homomixer. Thereafter, the pH adjuster in the component (a) and the common additive component was added and mixed to obtain an O / W-type UV cosmetic skin cosmetic (milky lotion).

  The UV cosmetic skin cosmetic obtained by the above preparation method was evaluated by the following method. The results are shown in Tables 2 and 3.

  20 women (25 to 45 years old) are panelists, and the obtained UV-preventive skin cosmetic (about 1 g) is used for 1 week before makeup. (1) Feel when used, (2) (3) Stickiness, (4) Tightness, (5) Skin occlusion, (6) Dryness, (7) Skin gloss and transparency, and (8) Makeup Judgment was made based on the following criteria, and further evaluation was performed based on the following criteria.

(1) Feel at the time of use 2 points: When it feels good to feel lightly.
1 point: When it feels a little light and feels good.
0 points: When the feel is heavy and the stretch is not good.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points of 0: A skin cosmetic for preventing ultraviolet rays that is very excellent in touch during use.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and the 0 point is 1 or more and 2 or less people.
(Triangle | delta): The total score is 15 points or more and less than 25 points: It is the skin cosmetics for ultraviolet rays prevention in which the touch at the time of use was a little excellent.
X: Total score is less than 15: It is a skin cosmetic for preventing ultraviolet rays that is not very good in use.

(2) Familiarity to skin 2 points: Feeling familiar to skin.
1 point: When familiarity with skin is slightly good.
0 points: When the skin feels bad.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points: 0: Skin care material for preventing ultraviolet rays that is very familiar to the skin.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and the 0 point is 1 or more and 2 or less people.
(Triangle | delta): The total score is 15 points or more and less than 25 points: It is a skin cosmetic for ultraviolet rays with a slightly good familiarity with skin.
X: Total score is less than 15 points: UV cosmetic skin cosmetics that are not so familiar to the skin.

(3) Stickiness 2 points: No stickiness.
1 point: When stickiness was hardly felt.
0 points: When feeling sticky.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points: 0: A skin cosmetic for preventing ultraviolet rays that does not feel sticky.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and the 0 point is 1 or more and 2 or less: It is an anti-ultraviolet skin cosmetic that hardly feels stickiness.
(Triangle | delta): The total score is 15 points or more and less than 25 points: It is skin cosmetics for ultraviolet rays prevention which does not feel a sticky feeling very much.
X: The total score is less than 15: It is a skin cosmetic for preventing ultraviolet rays that feels somewhat sticky.

(4) A squeaky feeling 2 points: When a squeaky feeling was not felt.
1 point: When a squeaky feeling was hardly felt.
0 point: When a squeaky feeling is felt.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points: 0: A skin cosmetic for preventing ultraviolet rays that does not feel squeaky.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and the 0 point is 1 or more and 2 or less people.
(Triangle | delta): It is the skin cosmetics for ultraviolet rays prevention which does not feel a squeak feeling so much that a total score is 15 points or more and less than 25 points.
X: The total score is less than 15: It is a skin cosmetic for preventing ultraviolet rays that feels slightly squeaky.

(5) Occlusion feeling 2 points: When no occlusion is felt.
1 point: When a feeling of occlusion was hardly felt.
0 point: When a feeling of obstruction is felt.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points: 0: A skin cosmetic for preventing ultraviolet rays that does not feel occluded.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and the 0 point is 1 or more and 2 or less people.
(Triangle | delta): The total score is 15 points or more and less than 25 points: It is the skin cosmetics for ultraviolet rays prevention which does not feel a blockage very much.
X: The total score is less than 15: It is a skin cosmetic for preventing ultraviolet rays that feels somewhat occluded.

(6) Dry feeling 2 points: When a dry feeling was not felt.
1 point: When almost no dryness was felt.
0 point: When feeling dry.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points: 0: A skin cosmetic for preventing ultraviolet rays that does not feel dry.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and the 0 point is 1 or more and 2 or less people: skin cosmetics for preventing ultraviolet rays that hardly feel dryness.
(Triangle | delta): The total score is 15 points or more and less than 25 points: It is a skin cosmetic for ultraviolet rays which does not feel dry feeling so much.
X: Total score is less than 15: It is a skin cosmetic for preventing ultraviolet rays that feels somewhat dry.

(7) Skin gloss and transparency 2 points: When skin gloss and transparency are felt.
1 point: When the skin feels a little glossy and transparent.
0 point: When the skin is not glossy or transparent.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points: 0: A skin cosmetic for preventing ultraviolet rays that gives the skin very gloss and transparency.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and the 0 point is 1 or more and 2 or less: a skin cosmetic for preventing ultraviolet rays that gives the skin gloss and transparency.
Δ: Total score of 15 points or more and less than 25 points: A skin cosmetic for preventing ultraviolet rays that gives the skin a little gloss and transparency.
X: Total score is less than 15: It is a skin care composition for preventing ultraviolet rays having a weak effect of giving gloss and transparency to the skin.

(8) Makeup No. 2 points: When the makeup feels good.
1 point: When the feeling of makeup is slightly good.
0 points: When the makeup feel is not good.

The total score of 20 people was calculated and evaluated as follows.
A: Total score of 35 points or more and 0 points: 0: Skin cosmetic for UV protection with very good makeup.
A: The total score is 25 points or more and less than 35 points, or the total score is 35 points or more and 0 point is 1 or more and 2 or less: a skin cosmetic for preventing UV rays with good makeup.
(Triangle | delta): Total score is 15 points or more and less than 25 points: It is skin cosmetics for ultraviolet rays prevention with a slightly good makeup | scouring paste.
X: The total score is less than 20 points, or 0 points is 6 or more: It is a skin cosmetic for preventing UV rays, which is not very good for makeup.

  The UV cosmetic skin cosmetics (Examples 1 to 7) of the present invention have a light and smooth feel when used, quickly adapt to the skin, hardly feel sticky or creaked after use, and give the skin a feeling of occlusion and dryness. Almost no skin was given, and the skin was glossy and transparent, and the effect of good makeup was obtained. In addition, from the comparison between Example 2 and Example 7, the UV-preventing skin cosmetic further includes the component (e), so that the effect of giving skin gloss and transparency, makeup flakes, and makeup lasting are improved. It turns out that the effect to do is improved more.

  On the other hand, in Comparative Examples 1-9, sufficient performance is not obtained. That is, in Comparative Example 1, since an ultraviolet absorber other than the component (a) is contained instead of the component (a), a sticky feeling, a squeaky feeling, and a feeling of blockage are given. Sufficient performance is not obtained in gloss, transparency, and makeup. In Comparative Example 2, since the oil agent other than the component (b) is contained instead of the component (b), sufficient performance is not obtained in the sticky feeling, the occlusion feeling, the gloss and transparency of the skin, and the makeup paste. . In Comparative Example 3, since the oil agent other than the component (b) is contained instead of the component (b), sufficient performance is not obtained in the squeaky feeling and the blockage feeling. In Comparative Example 4, since component (b) is not contained, it gives a squeaky feeling and a dry feeling, and sufficient performance can be obtained in terms of familiarity with skin, stickiness, occlusion, skin gloss and transparency. Not. In Comparative Example 5, since the component (c) is not included, the familiarity with the skin is not good, and sufficient performance is not obtained in the makeup paste. In Comparative Example 6, since the blending amount of the component (c) exceeds the upper limit of the range specified in the present invention, sufficient performance is not obtained in squeaky feeling, dry feeling, skin gloss and transparency. In Comparative Example 7, since the component (d) is not included, a dry feeling is given, the makeup feeling is not good, and sufficient performance is not obtained in a squeaky feeling, an occlusion feeling, a skin gloss and a transparent feeling. . In Comparative Example 8, since the blending amount of component (d) exceeds the upper limit of the range specified in the present invention, a feeling of occlusion is given, and the feeling and stickiness when used, the gloss and transparency of the skin, the makeup No sufficient performance has been obtained in the glue. In Comparative Example 9, since methylpolysiloxane having a viscosity exceeding the upper limit of the range specified in the present invention is included instead of the component (d), it gives a sticky feeling and a feeling of blockage. Sufficient performance is not obtained in familiarity with skin, squeaky feeling, gloss and transparency of skin, and makeup.

  The skin protection composition for preventing UV rays of the present invention has a light feel and good stretch at the time of use, quickly adapts to the skin, hardly feels sticky or squeaked after use, hardly gives the skin a feeling of occlusion or dryness, and glosses the skin. Therefore, it can be suitably used as an anti-ultraviolet skin cosmetic such as lotion, milky lotion, gel or cream.

Claims (2)

(A) 1-15% by mass of a microcapsule of an average particle size of 0.1-10 μm encapsulating an ultraviolet absorber, (b) 1-13% by mass of a monoester represented by the formula (I), (c) It contains 0.1 to 15% by mass of a cyclic polysiloxane represented by the formula (II), and (d) 0.1 to 5% by mass of methyl polysiloxane having a viscosity of 10 to 1,000 mm ² / s. UV-protective skin cosmetics.

(In the formula, R ₁ CO is an acyl group having 4 to 22 carbon atoms, R ₂ is an alkyl group having 4 to 22 carbon atoms, and 17 ≦ R ₁ + R ₂ ≦ 35.)

(Where n is a value from 3 to 6)   Furthermore, (e) Trimethylsiloxy silicic acid 0.1-5 mass% is contained, The skin cosmetics for ultraviolet rays prevention of Claim 1 characterized by the above-mentioned.