JP2003267853A - Bleaching cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bleaching cosmetic having excellent persistence of cosmetic effects and good bleaching effects, ultraviolet screening effects and feeling of use. <P>SOLUTION: The bleaching cosmetic comprises ellagic acid and/or its salt, titanium oxide and/or zinc oxide subjected to surface treatment with a surface treating agent. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a whitening cosmetic composition which has a long-lasting cosmetic effect, a whitening effect, an ultraviolet ray shielding effect and a good feeling in use.

[0002]

2. Description of the Related Art Conventionally, whitening cosmetics such as lotions, milky lotions, creams, beauty essences, packs, detergents, dispersions, ointments, liquids, aerosols and patches have a whitening effect. Various whitening agents have been added for the purpose. Examples thereof include ascorbic acid derivatives, placenta extracts, glutathione, hydroquinone, and the like, and attempts have been made to improve the whitening effect by using these whitening agents in combination with other components (JP-A-7-33638). JP-A-8-127525, JP-A-8-133956, JP-A-9-241124, JP-A-9-71519, JP-A-2000-53529, and JP-A-2000-25611.
No. 9, JP-A-6-107536, JP-A-5-2299.
No. 31, etc.).

[0003]

However, these whitening agents are not sufficiently effective, and further improvements have been desired in order to further improve them. Further, since these whitening agents are easily affected by the components used in combination in the cosmetics and the storage environment such as heat and light, it was necessary to pay attention to the restrictions on the formulation in order to satisfy the stability. . Therefore, even if these whitening agents can be blended in a stable manner, the effect of blending the whitening agents may not be sufficiently obtained, because the durability of the cosmetic effect is inferior or a good feeling of use cannot be obtained. there were. On the other hand, it has been shown that ellagic acid compounds and alkali metal salts thereof have an excellent whitening effect and also have good safety (JP-A-64-7910).
No. 3). However, in order to fully develop these whitening effects, it has been desired to further improve the sustainability of the cosmetic effect and improve the feeling of use.

[0004]

Means for Solving the Problems In view of such circumstances, the present inventors have earnestly studied, and as a result, ellagic acid and / or a salt thereof and a surface-treated titanium oxide and / or zinc oxide are blended to make up cosmetics. Excellent effect lasting, whitening effect,
The inventors have found that a whitening cosmetic composition having a good ultraviolet shielding effect and a good feeling in use can be obtained, and have completed the present invention.

That is, the present invention contains the following components (A) and (B); (A) ellagic acid and / or its salt (B) titanium oxide and / or zinc oxide surface-treated with a surface-treating agent. It is a whitening cosmetic which is characterized by Furthermore, it is a whitening cosmetic characterized in that the surface treatment agent of component (B) is one or more selected from organic silicon compounds, fluorine compounds and inorganic oxides. Furthermore, the organosilicon compound is a reactive alkyl polysiloxane, which is a whitening cosmetic composition. Further, the whitening cosmetic is characterized in that the fluorine compound is one or more selected from perfluoropolyether, perfluoroalkyl phosphate and perfluoroalkylsilane. Furthermore, the inorganic oxide is one or more selected from silica, aluminum oxide, and zirconium oxide, which is a whitening cosmetic composition. Further, the content of the component (A) is 0.
The whitening cosmetic is characterized in that the content of the component (B) is 1 to 1% by mass and the content of the component (B) is 0.05 to 30% by mass. Furthermore, the blending mass ratio of the components (A) to (B) is (A):
(B) = 1: 0.1 to 50, which is a whitening cosmetic composition. Hereinafter, the present invention will be described in detail.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The ellagic acid as the component (A) used in the present invention is exemplified by Japanese Patent Publication No. 52806/1993 and can be obtained by extraction from natural products such as legumes. However, in producing the ellagic acid used in the present invention, the type and origin of the natural product that is the origin thereof are not particularly limited. Examples of the salt of ellagic acid include alkali metal salts such as sodium and potassium, alkaline earth metal salts, ammonium salts, amine salts and the like. Since ellagic acid and / or its salt is poorly soluble, it is preferably finely dispersed. Specifically, it can be finely dispersed by high pressure treatment such as CLEARMIX, microfluidizer, ultrasonic treatment, homomixer treatment and the like.

The content of ellagic acid and / or its salt in the whitening cosmetic composition of the present invention is not particularly limited, but is 0.1.
-1% by mass (hereinafter, simply referred to as "%") is preferable.

The component (B) used in the present invention is titanium oxide and / or zinc oxide surface-treated with a surface treating agent. The component (B) imparts a protective effect against ultraviolet rays and a good feel, and since the surface activity of the powder is reduced, even if an unstable component is used in combination in the cosmetic, the degree of influence is small,
Further, since the water resistance is improved, the durability of the cosmetic effect is further improved. The surface-treated titanium oxide and zinc oxide are not particularly limited in particle shape, average particle diameter, etc., and can be appropriately selected and used as long as they are used in ordinary cosmetics. Examples of preferable surface treatment agents include organic silicon compounds, fluorine compounds and inorganic oxides, and one or more of these can be used.

The organosilicon compound is preferably a reactive alkyl polysiloxane. Reactive alkyl polysiloxane means that the amino hydrogen group (NH, N
H ₂ ), a halogen atom (for example, Cl, Br, I), a hydroxyl group (OH) or an alkoxy group (OR, where R represents an alkyl group) and the like have a reactive group (Japanese Patent Laid-Open No. 7-196946). reference).

Examples of such alkyl polysiloxanes include dimethylpolysiloxysilazane, α-monohydroxysiloxane, α, ω-dihydroxypolydimethylsiloxane, α-monoalkoxypolydimethylsiloxane, α-dialkoxypolydimethylsiloxane and α. −
Examples thereof include trialkoxypolydimethylsiloxane, α, ω-dialkoxypolydimethylsiloxane, α, ω-hexaalkoxypolydimethylsiloxane, dimethylpolysiloxycyclolide, dimethylpolysiloxybromide and dimethylpolysiloxyiodine. Among these, α-monoalkoxypolydimethylsiloxane, α-dialkoxypolydimethylsiloxane and α-
Trialkoxypolydimethylsiloxane (for example, α
-Triethoxypolydimethylsiloxane etc.) has very good reactivity with the surface of titanium oxide and / or zinc oxide, and is preferable.

As the fluorine compound, there is a compound having a fluoroalkyl group, and perfluoroalkyl phosphates (see US Pat. No. 3,632,744) and perfluoroalkylsilanes (JP-A-1-180070).
JP-A-2-218603, JP-A-1-160907
No. 2, JP-A-2-127477), fluoroalkylsilazanes, polyhexafluoropropylene oxides,
Fluoroalkyl group-containing organosiloxanes, fluoropolyethers, fluoroalcohols (JP-A-63
No. 2251, JP-A-63-2252), and fluorine-based resins such as tetrafluoroethylene resin (JP-A-57-38707).
No.) or their derivatives.

Here, particularly preferable compounds are perfluoroalkyl phosphates and perfluoroalkylsilanes. In particular, examples of the perfluoroalkyl phosphates include those described in JP-B-5-86984, and specifically, Asahi Guard AG
A commercially available perfluoroalkyl phosphate ester / diethanolamine salt as 530 (manufactured by Asahi Glass Co., Ltd.) can be preferably used. Further, examples of the perfluoroalkylsilanes include silane coupling agents such as LP-1T and LP-4T (manufactured by Shin-Etsu Chemical Co., Ltd.).

Examples of the inorganic oxide include silica, aluminum oxide and zirconium oxide, and those surface-treated with one or more of these can be used.

In the present invention, as a method of treating titanium oxide and / or zinc oxide with the above-mentioned surface treatment agent, a commonly known powder treatment method can be used regardless of a wet method or a dry method. Specifically, the powder is dispersed in an organic solvent in which the surface treatment agent is dissolved or dispersed, and the organic solvent is heated,
Examples include a method of removing under reduced pressure, a method of spray-coating an organic solvent in which a surface treatment agent is dissolved or dispersed in a powder in a gas phase, and a method of dry mechanochemical treatment with a high-speed impact stirrer. Among these methods, the wet processing method has excellent processing efficiency for powder.

In the present invention, any solvent may be used as the solvent when the surface treatment of titanium oxide and / or zinc oxide is carried out by the wet method, so long as the surface treatment agent is dissolved or dispersed therein. From the viewpoints of production environment, easiness of recovery, etc., methanol, ethanol, isopropyl alcohol, n-hexane, cyclohexane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, isoparaffin and the like are mentioned, and one or two of these are listed. The above can be used.

In the present invention, the ratio of titanium oxide and / or zinc oxide to the surface treatment agent is a weight ratio, and the powder:
Surface treatment agent = 99.9: 0.1 to 70:30 is preferable, and 99.5: 0.5 to 85:15 is particularly preferable. Within this range, it is possible to obtain a whitening cosmetic having a good durability of the makeup effect. In addition, during the surface treatment, a plasticizer such as octyl paramethoxycinnamate, a surfactant, an oil agent and the like can be used together within a range that does not impair the effects of the present invention.

The content of the component (B) in the present invention is not particularly limited, but is preferably 0.01 to 30%, more preferably 0. 1 to 25%.

Further, when the compounding mass ratio of the component (A) and the component (B) is (A) :( B) = 1: 0.1-50,
The effect of the present invention becomes more remarkable, which is particularly preferable.

The whitening cosmetic composition of the present invention may contain, in addition to the above-mentioned essential components, raw materials usually used in cosmetics. For example, oily ingredients, surfactants, humectants, polyhydric alcohols, lower alcohols, water-soluble polymers, antioxidants,
Examples include chelating agents, pH adjusters, salts, preservatives, bactericides, fragrances, dyes, pigments, powders, ultraviolet absorbers, vitamins, amino acids, cosmetic ingredients and the like.

In addition to the component (B) which is an essential component of the whitening cosmetic composition of the present invention, for the purpose of a colorant, a texture modifier, etc.,
Powders used in ordinary cosmetics can be blended. Such powder is not particularly limited by a spherical shape, a plate shape, a needle shape, a haze shape, a fine particle, a particle size such as a pigment grade, a porous structure, a non-porous particle structure, and the like. Is konjac, ultramarine, red iron oxide, yellow iron oxide, black iron oxide, aluminum oxide, silicon dioxide, magnesium oxide, zirconium oxide, magnesium carbonate, calcium carbonate, chromium oxide, chromium hydroxide, carbon black, aluminum silicate, silicic acid Magnesium, magnesium aluminum silicate, mica, synthetic mica, sericite, synthetic sericite, talc, kaolin, silicon carbide, barium sulfate,
Bentonite, smectite, inorganic powders such as boron nitride, bismuth oxychloride, titanium mica, iron oxide treated mica, iron oxide treated mica titanium, organic pigment treated mica titanium,
Bright powders such as aluminum powder, nylon powder, polymethylmethacrylate, acrylonitrile.
Methacrylic acid copolymer powder, vinylidene chloride / methacrylic acid copolymer powder, polyethylene powder, polystyrene powder, organopolysiloxane elastomer powder, polymethylsilsesquioxane powder, polytetrafluoroethylene powder, wool powder, silk powder, crystals Organic powders such as cellulose, magnesium stearate, zinc stearate, N-acyl lysine, etc., pigment powders such as organic tar pigments, lake pigments of organic pigments, titanium oxide coated with fine particles of titanium oxide,
Examples include composite powders of fine particles of zinc oxide-coated titanium mica, barium sulfate-coated titanium mica, titanium oxide-containing silicon dioxide, zinc oxide-containing silicon dioxide, and the like, and these powders are one type or a combination of two or more types. May be used, and may be surface-treated by a known method using a metal soap, wax, a surfactant, oils and fats, hydrocarbons and the like.

In the whitening cosmetic composition of the present invention, various oily components can be blended for the purpose of imparting an emollient feeling and adjusting the touch. As the oil component, the origin of animal oil, vegetable oil, synthetic oil and the like, and regardless of properties such as solid oil, semi-solid oil, liquid oil and volatile oil, hydrocarbons, fats and oils,
Oil agents such as waxes, hydrogenated oils, ester oils, fatty acids, higher alcohols, silicone oils, fluorine-based oils, lanolin derivatives and the like can be mentioned. Specifically, liquid paraffin, α-olefin oligomer, ceresin, squalane, microcrystalline wax, paraffin wax, hydrocarbons such as petrolatum, olive oil, castor oil,
Oils and fats such as coconut oil, mink oil, macadamian nut oil, grapeseed oil, avocado oil, egg yolk oil, hardened oil, waxes such as beeswax, gay wax, carnauba wax, candelilla wax, cetyl isooctanate, myristin Isopropyl acid, isopropyl palmitate, octyldodecyl myristate, glyceryl trioctanoate,
Polyglyceryl diisostearate, diglyceryl triisostearate, glyceryl tribehenate, pentaerythritol ester rosin acid, neopentyl glycol dioctanoate, butyl stearate, octyldodecyl oleate, esters of cholesterol fatty acid ester, stearic acid, lauric acid, Fatty acids such as myristic acid, behenic acid, isostearic acid, oleic acid,
Alcohols such as stearyl alcohol, cetyl alcohol, lauryl alcohol, oleyl alcohol, isostearyl alcohol, behenyl alcohol, octyldodecanol, hexyldecanol, low polymerization degree dimethylpolysiloxane, high polymerization degree dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclo Silicone such as pentasiloxane, octamethylcyclotetrasiloxane, polyether modified polysiloxane, polyoxyalkylene / alkylmethylpolysiloxane / methylpolysiloxane copolymer, alkoxy modified polysiloxane, crosslinked organopolysiloxane, lanolin, lanolin acetate , Lanolin fatty acid isopropyl, lanolin derivatives such as lanolin alcohol, dextrin fatty acid ester, sucrose fatty acid Ester, starch fatty acid esters,
Examples include oily gelling agents such as calcium stearate.

In the whitening cosmetic composition of the present invention, for the purpose of improving the dispersibility of the above-mentioned components (A) and (B), and also for emulsifying and solubilizing the oily component and imparting a cleaning effect. Various surfactants can be used. Examples of the surfactant include fatty acid salts, alkyl sulfonates, polyoxyalkylene alkyl ether phosphates,
Anionic surfactants such as polyoxyalkylene alkyl ether sulfate, sodium alkyl phosphate, N-acyl glutamate, dialkyl sulfosuccinate, alkyloylalkylmethyl taurine salt, stearyl dimethyl benzyl ammonium chloride, stearyl trimethyl ammonium chloride, etc. Chaotic surfactants, alkylaminoethylglycine hydrochloride liquid, dimethylalkylcarboxymethylammonium betaine, amphoteric surfactants such as lecithin, glycerin fatty acid esters such as glyceryl monostearate, polyglycerin fatty acid esters, propylene glycol monostearate, etc. Propylene glycol fatty acid ester, sorbitan fatty acid ester such as sorbitan monostearate, sucrose fatty acid ester,
Polyalkylene glycol fatty acid ester such as polyethylene glycol monostearate, polyoxyethylene sorbitan monopalmitate, fatty acid ester of sorbitol and its alkylene glycol adduct, polyoxyethylene coconut fatty acid monoethanolamide, polyoxyethylene polyoxypropylene glycol, poly Oxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene lanolin, polyoxyethylene cholesterol ether, polyoxyethylene cholestanol ether, polyoxyethylene oleyl ether, polyoxyalkylene modified silicone, polyoxyalkylene alkyl co-modified silicone, etc. The nonionic surfactants and the like can be used and can be appropriately used according to the purpose.

In the whitening cosmetic composition of the present invention, in order to impart freshness and moisturizing effect and enhance the moisturizing effect,
As a moisturizing agent, for example, glycerin, diglycerin, polyglycerin, 1,3-butylene glycol, 1,2-pentanediol, propylene glycol, sorbitol, erythritol, xylitol, polyethylene glycol, polyhydric alcohols such as dipropylene glycol, amino acids, NMF components such as sodium lactate and sodium pyrrolidone carboxylate, water-soluble polymer substances such as hyaluronic acid, collagen, mucopolysaccharides and chondroitin sulfate can be blended. Also, giving a refreshing feeling,
For the purpose of adjusting the feel and the like, lower alcohols such as ethanol and isopropanol can be used. Further, it imparts viscosity to the system, improves usability and stability, adjusts the feel, etc., and as a thickener, for example, sodium alginate, xanthan gum, aluminum silicate, quince seed extract, tragacanth gum, natural starch and the like. A high molecular substance, a semi-synthetic high molecular substance such as methyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose, soluble starch, and chaotic cellulose, a synthetic high molecular substance such as carboxyvinyl polymer, polyvinyl alcohol and the like can be used.

Further, for the purpose of maintaining the quality stability of the system, as an antioxidant, for example, dibutylhydroxytoluene,
Butylhydroxyanisole, vitamin E and / or its derivatives, propyl gallate, etc., and as chelating agents, for example, edetic acid, ethanehydroxydiphosphate, pyrophosphate, hexametaphosphate, citric acid, tartaric acid, gluconic acid and these The salts and the like of can be used. Furthermore, as a pH adjusting agent, for example, sodium hydroxide, triethanolamine, aminomethyl propanol, lactic acid, sodium lactate, malic acid, citric acid,
Sodium citrate, pyrrolidonecarboxylic acid, boric acid,
Borax, sodium dihydrogen phosphate, sodium monohydrogen phosphate, etc., as a preservative, for example, methyl paraoxybenzoate, ethyl paraoxybenzoate, dehydroacetic acid, salicylic acid, benzoic acid, sorbic acid, benzalkonium chloride, etc. As a UV absorber, for example, 2-hydroxy-4
-Methoxybenzophenone, octyldimethylparaaminobenzoate, octyl methoxycinnamate, octyltriazone and the like can be used.

Further, various cosmetic ingredients can be blended for the purpose of improving skin effects such as moisturizing effect and adjusting feel. Examples of vitamins include vitamin A, vitamin B, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P, vitamin U, carnitine and derivatives thereof, and examples of amino acids include glycine, alanine, Examples thereof include valine, leucine, isoleucine, serine, threonine, phenylalanine, tyrosine, tryptophan, cystine, cysteine, methionine, proline, hydroxyproline, aspartic acid, glutamic acid, arginine, histidine, lysine and derivatives thereof.

The whitening cosmetic composition of the present invention can be manufactured by a conventional method. Further, the whitening cosmetic of the present invention is not limited to general skin cosmetics, and quasi-drugs,
It includes all skin external preparations such as pharmaceuticals, and its dosage form is not particularly limited and can be selected according to the purpose. For example, the dosage form may be liquid, powder, solid,
It may be emulsion, cream, gel, etc., skin lotion, beauty essence, emulsion, cream, pack, massage, face cleansing, cleansing, sunscreen and other skin care cosmetics, body powder, body lotion. It can be applied to body care cosmetics such as etc., base materials, foundations, white powder, concealer, eye color, makeup cosmetics such as lipsticks, ointments, aerosols, patches and the like.

[0027]

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples.

Examples 1 to 6 and Comparative Examples 1 and 2 Creams Creams having the compositions shown in Table 1 below were produced and evaluated for the durability of the cosmetic effect, the ultraviolet blocking effect and the feeling of use.

[0029]

[Table 1]

* 1 α-monoalkoxypolydimethylsiloxane 15% treated * 2 Perfluoroalkyl phosphate ester diethanolamine salt 10% treated * 3 α-monoalkoxypolydimethylsiloxane 15
% Treatment * 4 Made by Lion

(Production Method) A: Component 15 is dispersed in part of component 14. B: Components 1 to 11 are heated and mixed at 70 ° C. C: Components 12 to 14 and 16 to 18 are heated and mixed at 70 ° C. D: Add C to B, stir, and cool. E: D
A and ingredients 19 to 20 were uniformly mixed to obtain a cream.

(Evaluation method 1) 10 professional evaluation panels evaluated the persistence of the cosmetic effect, the UV blocking effect and the whitening effect. After applying an appropriate amount of the sample in Table 1, for the durability of the makeup effect and the UV blocking effect, after daily living outdoors, and for the whitening effect, after continuously using for 1 month, the following criteria were used. It was evaluated on a scale of 5 and judged from the average score. [Evaluation] 5 points: Very good. 4 points: good. 3 points: Normal. 2 points: Somewhat defective. 1 point: defective. [Judgment] ◎: Average score of 4.5 points or more ○: Average score of 3.5 points or more and less than 4.5 points △: Average score of 2.5 points or more and less than 3.5 points ×: Average point of less than 2.5 points

(Evaluation Method 2) Ten professional evaluation panels evaluated the feeling of use when applied to the skin. The adhesiveness to the skin, the uniformity of the cosmetic film, and the smooth spread and spread were evaluated in the same manner as described above on the basis of five grades, and further judged from the average point. The results obtained by the above evaluation method are also shown in Table 1.

As is clear from the results shown in Table 1, the creams of Examples 1 to 6 according to the present invention were excellent in the durability of the cosmetic effect, the effect of blocking ultraviolet rays, the whitening effect and the feeling of use. . On the other hand, in the comparative example, good results satisfying all the items were not obtained. The creams of Examples 1 to 6 according to the present invention were excellent in stability over time, even after being stored in a constant temperature bath at 40 ° C. for 3 months, no change in appearance such as discoloration was observed.

[0035] Example 7 Cream       (Component) (%)   1. Polyoxyethylene sorbitan monooleate 1.0       (20 EO)   2. Sorbitan sesquioleate 1.0   3. Liquid paraffin 5.0   4. Glyceryl trioctanoate 3.0   5. Vaseline 2.0   6. Perfluoroalkyl phosphoric acid treatment zinc oxide * 1 2.0   7. Cetanol 2.0   8. Purified water Remaining amount   9. Sodium lactate 0.5 10. Disodium edetate 0.1 11. Ellagic acid * 2 1.0 12. Preservative Suitable amount 13. Fragrance suitable amount * 1 Perfluoroalkyl phosphate ester diethanolamine salt 10% treatment * 2 Made by Lion

(Manufacturing method) A: Components 10 and 11 are dispersed in part of component 8. B: Components 1 to 7 are heated and mixed at 70 ° C. C: Components 8 and 9 are heated and mixed at 70 ° C. D: Add C to B, stir, and cool. E: D and A, 12, 13 were mixed to obtain a cream.

The cream thus obtained had a long lasting cosmetic effect, a whitening effect and a good feeling during use.

[0038] Example 8 Suncut (registered trademark) cosmetics     (Component) (%)   1. Silicone treated titanium oxide * 1 10.0   2. Silicone treated zinc oxide * 2 15.0   3. Methoxycinnamate-2-ethylhexyl 3.0   4. Decamethylcyclopentasiloxane 30.0   5. Dimethyl polysiloxane remaining amount   6. Ethanol 5.0   7. Purified water 30.0   8. Ellagic acid * 3 0.5   9. Disodium edetate 0.1 10. Citric acid 0.03 11. Sodium citrate 0.1

* 1 α-monoalkoxypolydimethylsiloxane 15% treatment * 2 α-monoalkoxypolydimethylsiloxane 15
% Treatment * 3 manufactured by Lion Corporation (manufacturing method) A: Components 8 to 11 are dispersed in part of component 7. B: Components 1 to 5 are dispersed. C: The rest of A, 6 and 7 was added to B, and the mixture was stirred to obtain a Suncut (registered trademark) cosmetic.

The sun-cut (registered trademark) cosmetics obtained as described above had a long lasting cosmetic effect, a whitening effect and a good feeling of use.

[0041]

EFFECTS OF THE INVENTION The whitening cosmetic composition of the present invention is excellent in the durability of the cosmetic effect, and has a good whitening effect, an ultraviolet shielding effect and a feeling of use.

Continued front page    F-term (reference) 4C083 AB171 AB211 AB212 AB221                       AB241 AB242 AC012 AC022                       AC072 AC122 AC302 AC342                       AC402 AC422 AC482 AC532                       AC841 AC842 AD152 AD172                       AD662 CC03 CC19 DD31                       EE06 EE16 EE17

Claims (7)

[Claims] 1. The following components (A) and (B); (A) ellagic acid and / or its salt (B) containing titanium oxide and / or zinc oxide surface-treated with a surface-treating agent. A characteristic whitening cosmetic. 2. The whitening cosmetic composition according to claim 1, wherein the surface treatment agent as component (B) is one or more selected from organic silicon compounds, fluorine compounds and inorganic oxides. 3. The whitening cosmetic composition according to claim 2, wherein the organosilicon compound is a reactive alkyl polysiloxane. 4. The whitening cosmetic composition according to claim 2, wherein the fluorine compound is one kind or two or more kinds selected from perfluoropolyether, perfluoroalkylphosphate and perfluoroalkylsilane. 5. The whitening cosmetic composition according to claim 2, wherein the inorganic oxide is one or more selected from silica, aluminum oxide and zirconium oxide. 6. The content of component (A) is 0.1 to 1% by mass,
Content of a component (B) is 0.05-30 mass%, The whitening cosmetics in any one of Claims 1-5 characterized by the above-mentioned. 7. The blending mass ratio of components (A) to (B) is
(A) :( B) = 1: 0.1-50, The whitening cosmetics in any one of Claims 1-6 characterized by the above-mentioned.