Shiseido Company, Limited

Ryushi Fukuhara

Yuki Sugiyama

Shun Kubota

Takumi Watanabe

Shoko Ogawa

Amelie Dauphin

Yang Han

A transparent liquid composition that does not substantially contain ethyl alcohol, contains water as the main solvent, and has a high concentration of perfume is provided. The transparent liquid composition comprises: (a) 3-20% by mass of a perfume component; (b) a hydrogenated castor oil to which 30-60 moles of polyoxyethylene is added; (c) an alkanol obtained by addition polymerization of 20-30 moles of polyoxyprolylene and 20-30 moles of polyoxyethylene; (d) one type or more of a surfactant having an Inorganic-value/Organic-value of 0.70-1.20; and (e) 40% by mass or greater of an aqueous component other than ethyl alcohol, wherein the blending ratio (d/(b+c)) of the component (d) to the sum of the blending amounts of the components (b) and (c) is 0.03-0.60, and ethyl alcohol is not substantially contained.

Transparent liquid composition

A method of emulsification of an oil phase in an aqueous continuous phase, by dispersing core-corona microparticles into the aqueous phase, adding the oil phase, and applying shearing force for a time sufficient to emulsify the resulting mixture. The core-corona microparticles are obtained by radical co-polymerization of a polyethylene oxide macromonomer with at least one hydrophobic acrylate monomer and at least one hydrophobic acrylamide monomer.

Method of emulsification using core-corona type microparticles

A water-in-oil emulsion composition that is significantly excellent in emulsification stability, and also excellent in non-stickiness is provided. The water-in-oil emulsion composition includes (a) a polyoxyalkylene/alkyl co-modified silicone; (b) a core-corona particle; (c) an oil-phase component; and (d) an aqueous-phase component.

Water-in-oil type emulsion composition

The purpose of the present invention is to provide a water-in-oil type emulsion cosmetic that has a replenishing and smooth feel-of-use, that, once applied, forms a uniform coating, and that can minimize the appearance of skin roughness such as pores while covering discoloration such as spots and freckles, but that does not give an impression of a thick coating. The present invention provides a water-in-oil type emulsion cosmetic characterized by containing (A) 0.1-20 mass % of metallic soap-treated powder, and (B) a water-absorptive polymer having 0.01-2 mass % of a carboxyl group. The (B) water-absorptive polymer having a carboxyl group of this cosmetic preferably can absorb 10-1,000 times its own weight.

Water-in-oil emulsion cosmetic

Provided are: a core-corona polymer particle excellent in emulsion stability and feeling of use, and a raw material for a cosmetic and an oil-in-water emulsion cosmetic comprising the particle. Certain embodiments of the present invention provides a core-corona polymer particle obtained by radical-polymerizing a polyethylene oxide macromonomer represented by formula (1) and one or two or more of hydrophobic monomers represented by formulas (2) and (3) under conditions (A) to (D).

Raw material for cosmetic and oil-in-water emulsion cosmetic comprising core-corona polymer particle

Provided are a raw material for a cosmetic and an oil-in-water emulsion cosmetic comprising a core-corona polymer particle excellent in emulsion stability and feeling of use. Certain embodiments of the present invention provides a raw material for a cosmetic, comprising a core-corona polymer particle dispersion obtained by radical-polymerizing a polyethylene oxide macromonomer represented by formula (1) and one or two or more of hydrophobic monomers represented by formulas (2) and (3) under conditions (A) to (D).

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Kanagawa, Japan

Ryushi Fukuhara