Disclosed are: a method for suppressing adhesion of air harmful substances, including applying a metal oxide (A) having an average primary particle diameter d.sub.A of 800 nm or less to skin in an amount of 0.03 mg/cm.sup.2 or more to suppress adhesion of air pollutants to the skin, and a method for suppressing adhesion of air pollutants, including applying an external preparation to skin to suppress adhesion of air pollutants to the skin, wherein the external preparation contains the component (AI), and the component (BI), the component (BII) or the component (BIII), and the ratio by mass of the content of the component (BI), the component (BII) or the component (BIII) to the content of the component (AI) in the external preparation each falls within a specific range. Component (AI): a hydrophobized metal oxide having an average primary particle diameter d.sub.AI of 800 nm or less. Component (BI): an ester oil. Component (BII): a nonvolatile hydrocarbon oil. Component (BIII): a nonvolatile silicone oil.

A hair dye comprising at least 0.3 to 2% by mass of at least one of acid dyes, 0.5 to 6% by mass of a film-forming resin, 15 to 55% by mass of alcohol having 7 or less carbon atoms and 20% by mass or more of water and having a pH modified to 2 to 5, wherein the hair dye contains particles having an average particle diameter of 0.3 to 3 m is provided as a hair dye which does not require washing of the hairs immediately after used and which is excellent not only in a hair dyeing property immediately after applied but also such a cumulative hair dyeing property as gradually dyeing the hairs at every frequency of repeating use thereof.

The invention is directed to the cosmetic powder surface-treated with a silicone gel, wherein the surface treatment with the silicone gel affords excellent water repellency, the exhibits smooth and light touch, and affords moist usability peculiar to the silicone gel and excellent adhesion to skin for the cosmetic powder. The powder is an inorganic powder, an organic powder or a composite powder thereof. The silicone gel is obtained by hydrolysis and condensation reacting an organopolysiloxane containing at least a diorganopolysiloxane having reactive opposite ends shown in the following formula (1) and a silane coupling agent having the following formula (2) with at least two hydrolyzable groups in one molecule or a reactive polysiloxane of the following formula (3) as a crosslinking agent. (1) R.sup.1R.sup.2.sub.2SiO(R.sup.2.sub.2SiO).sub.LSiR.sup.1R.sup.2.sub.2; (2) R.sup.3R.sup.4nSiX.sub.(3-n); and (3) R.sup.5.sub.3SiO(R.sup.5.sub.2SiO)n-SiR.sup.5.sub.3.

The present document describes an oral care composition comprising treated aragonite calcium carbonate (CaCO.sub.3) particles having more than 95% (w/w) calcium carbonate content, a specific surface area (SSA) of about 2.70 to about 3.1 m.sup.2/g, for use as a first dental abrasive, a fluoride compound suitable to provide beneficial fluoride treatment to teeth; and a suitable carrier. The treated aragonite calcium carbonate particles have been effectively treated in mildly acidic condition to avoid reaction of fluoride from the fluoride compound and the treated aragonite calcium carbonate particles.

[Problem] An objective of the present invention is to provide an oil-in-water emulsion cosmetic having a watery and well-spreading texture in use and having excellent covering performance.

[Solution] The oil-in-water emulsion cosmetic of the present invention contains (A) an aqueous component selected from monohydric alcohols and dihydric alcohols; (B) a polyoxyalkylene-modified silicone; (C) an oil; (D) a powder having a hydrophobized surface; and (E) a dispersant that is one or more compounds selected from (E-1) a polyglycerin fatty acid ester having three or more glycerin molecules, and (E-2) polyhydroxystearic acid, wherein the (A) aqueous component, in the case of being a monohydric alcohol alone, constitutes 1% to 15% by mass relative to the overall amount of the cosmetic, in the case of being a dihydric alcohol alone, constitutes 1% to 20% by mass relative to the overall amount of the cosmetic, and in the case of being a combination of a monohydric alcohol and a dihydric alcohol, a total amount thereof constitutes 1% to 45% by mass relative to the overall amount of the cosmetic.

The present invention refers to a novel hierarchical composite material comprising (a) ZnO nanoparticles having a mean particle of less than 100 nm, and (b) ZnO support particles having a mean particle size of more than 100 nm; wherein said nanoparticles are dispersed onto the support particles. The invention further refers to cosmetic compositions comprising such material, methods of preparation and uses thereof.

The present invention relates generally to methods and compositions useful for cosmetic purposes and include compositions comprising a dimethicone, at least one film-forming agent, and at least one surface-treated pigment, wherein the film-forming agent comprises a dimethicone acrylate copolymer, a trimethicone and/or isobutylmethacrylate/bis-hydroxypropyl dimethicone copolymer.

The present invention refers to synthetic lipophilic zeolites powder for the preparation of cosmetic compositions.

Provided is an oil-in-water emulsified cosmetic composition having a characteristic fresh feel during use while exhibiting excellent emulsified stability and high covering power. The oil-in-water emulsified cosmetic composition comprises the following components (a) to (d): (a) pigment particles with a mean particle size of 200 to 500 nm and hydrophobically treated on the surface, (b) a water-soluble alkyl-substituted polysaccharide derivative, (c) polyhydroxystearic acid, and (d) an oil containing a polar oil, wherein the pigment particles are dispersed in the oil, the content of the pigment particles is 8.0 mass % to 15 mass %, and the content of nonionic surfactants with an HLB value of 10 or greater is 1.0 mass % or lower.

The invention provides an antibacterial toothpaste, comprising a charged antibacterial toothpaste abrasive. The charged antibacterial toothpaste abrasive comprises a ferroelectric ceramic. The ferroelectric ceramic is selected from at least one or a compound or a composition of more than one of potassium sodium niobate, i.e. K.sub.0.5Na.sub.0.5NbO.sub.3, barium titanate, i.e. BaTiO.sub.3, lithium niobate, i.e. LiNbO.sub.3, and barium strontium titanate, i.e. Ba.sub.xSr.sub.1xTiO.sub.3, where 0<x<1. In the inventive antibacterial toothpaste, the charged antibacterial toothpaste abrasive can maintain good electrical stability, such that an antibacterial toothpaste containing same can play a lasting antibacterial role by utilizing a polarization effect, and has a relatively good antibacterial performance, thereby achieving both teeth cleaning and antibacterial effects.