Disclosed is a method for suppressing adhesion of air harmful substances, including applying an external preparation to skin to suppress adhesion of air pollutants to the skin, wherein the external preparation contains the following component (A) and component (B), and the ratio by mass of the content of the component (A) to the content of the component (B) in the external preparation [(A)/(B)] is 0.30 or more and 5.0 or less. Component (A): a metal oxide having an average primary particle diameter d.sub.A of 800 nm or less. Component (B): non-disintegrable particles having an average particle diameter D.sub.B of 1 μm or more and 10 μm or less.

A composition is provided. The composition is a water-in-oil emulsion comprising an aqueous phase and an oil phase. The aqueous phase comprises water, one or more humectants, one or more preservatives, one or more preservative boosters, one or more stabilizers and/or one or more pH adjusters. The oil phase comprises one or more solvents, one or more emulsifiers, one or more emollients and/or one or more aesthetic modifiers. Methods of preparing the composition and methods of improving the appearance of skin are also provided.

A cosmetics composition having improved water absorbability and oil absorbability is provided. The cosmetics composition effectively controls sweat and sebum, thereby making it possible to improve persistence of make-up and to keep skin from looking dull.

A method of producing efficiently and stably core-shell type oxide particles, wherein the entire surface of the core oxide particles is uniformly coated with the shell oxide, includes at least two steps of: Step 1 of precipitating the core oxide particles in a mixed fluid prepared by mixing an oxide raw material liquid for core and an oxide precipitation solvent and Step 2 of coating the entire surface of the core oxide particles uniformly with the shell oxide by mixing the mixed fluid and an oxide raw material liquid for shell. (A) At least Steps 1 and 2 are performed continuously between at least two processing surfaces 1 and 2 which are capable of approaching to and separating from each other, at least one of which rotates relatively to the other; (B) after Step 1, Step 2 is completed within a prescribed time during which the core oxide particles do not aggregate in the mixed fluid; or (C) Step 1 and Step 2 are controlled so that the primary particle diameter of the core-shell type oxide particles is 190% or less relative to the primary particle diameter of the core oxide particles.

Disclosed herein are compositions comprising oolitic aragonite particles, wherein the oolitic aragonite particles have an average particle size of between 100 nm to 1 mm, and a Hunter brightness level greater than 88. Further disclosed herein are personal care and/or cosmetic compositions, comprising a carrier and the aforementioned oolitic aragonite particles. Further disclosed herein are methods of making and using the oolitic aragonite particles.

Skin tightening compositions for application to the skin for providing an instantaneous and dramatic improvement to the appearance of skin. The skin tightening compositions typically include an aqueous phase comprising about 5 to about 40 wt. % of water, one or more water dispersible pigments; and an oil phase comprising at least 5 wt. % of one or more hydrophobic film forming polymers, from about 1 to about 40 wt. % of one or more thickening agents, from about 30 to about 85 wt. % of one or more volatile hydrocarbon oils.

Provided are: silica-coated particles which have satisfactory dispersibility in resins and liquid materials, have functional groups capable of reacting with resins, and also has satisfactory slipperiness as well as water repellency; and a method for producing the silica-coated particles. Silica-coated particles, in which the surface of each of solid particles (A) is coated with silica (B), a part or the whole of a hydroxyl group on the surface of the silica (B) is reacted with at least one component (C) selected from an organoalkoxysilane and a hydrolysate thereof and an organosilazane, wherein the amount of the silica (B) is 0.5 to 100 parts by mass relative to 100 parts by mass of the solid particles (A).

In a zinc oxide powder of the present invention, a content of a water-soluble substance is 0.30% by mass or less, and a mass ratio between an alkali metal and an alkaline earth metal which are included in the water-soluble substance is in a range of 1:2 to 10:1.

A black aluminum pigment comprises a flaky aluminum particle; and a coating film that covers the aluminum particle, the coating film comprises a titanium oxide layer and an amorphous silicon compound layer, the titanium oxide layer has a composition that satisfies TiO.sub.x (0.50≤x≤1.90), and the amorphous silicon compound layer is composed of at least one of silicon oxide, silicon hydroxide, and silicon hydrate.

A water-based liquid cosmetic comprising: sodium polyaspartate; at least one brilliant powder selected from the group consisting of a glass powder coated with a metal or a metal oxide, an aluminum powder, and a resin film powder coated with a metal; a water-soluble dispersant; and at least one metal oxide selected from the group consisting of yellow iron oxide, red iron oxide, black iron oxide, titanium dioxide, titanium oxynitride, and Prussian blue.