A colored metallic pigment according to the present invention is a colored metallic pigment including at least a metallic pigment, an amorphous silicon oxide film layer formed on a surface of the metallic pigment, a metallic-particle-supporting layer formed on a surface of the amorphous silicon oxide film layer, and metallic particles formed on a surface of the metallic-particle-supporting layer, characterized in that the metallic-particle-supporting layer is formed of one or both of a metal layer and a metal oxide layer composed of a metal oxide other than silicon oxide, the metallic particles are formed to directly cover a part of the surface of the metallic-particle-supporting layer, and the amorphous silicon oxide film layer has a thickness of more than 500 nm.

The present disclosure relates to a blue complex powder including a flat-shaped fine powder and a coating layer coated on the flat-shaped fine powder and a composition for improving skin transparency which includes the blue complex powder as an active ingredient. The complex powder may provide improved naturalness, gloss and transparency by reflecting, emitting or amplifying blue light. In addition, the complex powder may provide uniform applicability on skin and uniform interference by restricting the particle size distribution of the complex powder to 1-16 μm. The complex powder is useful because it may be used in a cosmetic composition for base makeup.

The subject of the present invention is a cosmetic composition of oil-in-water type comprising: (1) hydrophobic silica aerogel particles having a specific surface area per unit of mass (S.sub.M) ranging from 500 to 1500 m.sup.2/g and a size, expressed as volume-average diameter (D[0.5]), ranging from 1 to 1500 μm ; (2) at least one gemini surfactant of formula (I): ##STR00001##
in which R.sub.1 and R.sub.3 denote, independently of one another, an alkyl radical containing from 1 to 25 carbon atoms; R.sub.2 denotes a spacer consisting of a linear or branched alkylene chain containing from 1 to 12 carbon atoms; X and Y denote, independently of one another, a —(C.sub.2H.sub.4O).sub.a—(C.sub.3H.sub.6O).sub.bZ group; n ranges from 1 to 10 ; and (3) at least one fatty phase comprising at least one fatty substance chosen from solid fatty substances and pasty fatty substances. The composition in accordance with the invention makes it possible to make good the lack of cutaneous lipids in dehydrated skin, and to provide comfort and persistent nutrition, while at the same time having sensory properties, for example a non-greasy and non-tacky effect and a matt skin appearance, and also good skin penetration properties, even with a high level of solid fatty substance.

A photoelectric conversion device includes: a wavelength converting region that absorbs ambient light to generate electrons and holes, and recombines the generated electrons and holes to generate monochromatic light; and a photoelectric conversion region that has a p-n junction or p-i-n junction, absorbs the monochromatic light generated in the wavelength converting region to generate electrons and holes, and separates and moves the electrons and holes generated by absorption of the monochromatic light. The wavelength converting region includes: a carrier generating region that generates the electrons and holes; a light emitting region that generates the monochromatic light; and a carrier selective transfer region that is disposed between the carrier generating region and the light emitting region and that, of the electrons and holes generated in the carrier generating region, moves those electrons and holes having specific energies difference there between to the light emitting region.

A non-pyrogenic preparation containing nanoparticles synthesized by magnetotactic bacteria for medical or cosmetic applications. The nanoparticles are constituted by a crystallized mineral central part including predominantly an iron oxide, as well as a surrounding coating without material from the magnetotactic bacteria.

Disclosed is a personal care composition comprising: a) particle comprising chitosan salt at the outer surface of the particle; and b) silicone component selected from dimethicone, aminosilicone or a mixture thereof, wherein the silicone component has a viscosity of at least 5,000 cSt at 25° C.

Ultraviolet radiation sun protective compositions are reported which feature micronized metal oxide inorganic particles selected from zinc oxide, titanium oxide and mixtures thereof, the inorganic particles being coated with poly [C.sub.8-C.sub.20 hydroxycarboxylic acid], the coated particles measured at a 10% loading in dodecane and 1 minute elapsed time having a Zeta Potential ranging from 2 to 10 mv, amounts of the poly [C.sub.8-C.sub.20 hydroxycarboxylic acid] to the inorganic particles being in a relative weight ratio of 1:100 to 1:10.

A titanium oxide powder of the present invention has a BET specific surface area of 5 m.sup.2/g or more and 15 m.sup.2/g or less and contains polyhedral-shaped titanium oxide particles having eight or more faces, in which a mass reduction rate in a case of being heated at 800° C. for 1 hour in an air atmosphere is 0.03% by mass or more and 0.5% by mass or less.

The object of the present invention is to provide a composition for a laminated coating film having designability to a coated body and weather resistance. The present invention provides a composition for a laminated coating film, comprising silicon oxide-coated iron oxide particles, wherein at least a part of the surface of said iron oxide particles is coated with silicon oxide, wherein the diameter of said iron oxide particles is 1 to 50 nm, and wherein the average reflectivity of said silicon oxide-coated iron oxide particles for the light of the wavelengths of 620 to 750 nm is 25% or less. It is preferable that the transmittance of the dispersion comprising said silicon oxide-coated iron oxide particles for the light of the wavelength of 200 to 420 nm is 2.0% or less, and the transmittance of the same for the light of the wavelength of 620 to 780 nm is 80% or more.

The present disclosure relates generally to cosmetic powders in which the powders are surface modified with at least one polysaccharide, or salt forms thereof. The powders may be used in cosmetic compositions such as a powder foundation, liquid foundation, point makeup, lip, mascara, eyeliner, skin care products which are skin cream, hair care products which are shampoo, conditioner, treatment and hair styling products, hair color products, cleansing products which are a body soap, hand soap and facial cleanser.