Abstract: The present invention provides an oily composition, including: at least one kind of urethane polymer (A) selected from the group consisting of a (PPG-12/SMDI) copolymer and a (polyglyceryl-2 diisostearate/IPDI) copolymer; silica particles (B); and one or more kinds of oil components (C) selected from an ester oil, a hydrocarbon oil, and a silicone oil, and a cosmetic composition including the oily composition.

Abstract: This invention provides: a polyurethane for cosmetic preparations, which is obtained by reacting (A) a polyester polyol having two or more hydroxyl groups in each molecule, (B) an aliphatic diol consisting of two hydroxyl groups and an aliphatic hydrocarbon group having 3 to 8 carbon atoms, (C) a carboxyl group-containing diol which has a carboxyl group and two hydroxyl groups in the molecule and has a molecular weight of 100 to 300, (D) a diisocyanate containing at least one compound selected from the group consisting of isophorone diisocyanate, hexamethylene diisocyanate and dicyclohexylmethane-4,4?-diisocyanate, and (E) a chain extender which contains at least one compound selected from the group consisting of water, ethylene diamine and propylene diamine and which has a weight average molecular weight of 50,000 to 300,000; a production method; and a cosmetic preparation which contains this polyurethane for cosmetic preparations.

Abstract: The present invention provides: a urethane polymer having a structure represented by general formula (1) below; an oil composition in which the urethane polymer is dissolved; and a cosmetic composition containing the oil composition. (In the formula, R1 and R2 each independently denote an alkylene group having 5 to 40 carbon atoms, Z1 and Z2 each denote an oxyalkylene group represented by general formula (2) or (3) disclosed in the description, R3 denotes a diisocyanate residue, X1 denotes a hydrogen atom or a group represented by general formula (4) disclosed in the description, X2 denotes a hydrogen atom or a group represented by general formula (5) disclosed in the description, and n denotes a number from 1 to 20, provided that n is 1 if X1 and X2 are each a hydrogen atom.

Abstract: An metalloporphyrin-complex-embedded liposome, comprising a cationic metalloporphyrin complex and a lipid having liposome forming ability is disclosed. As metalloporphyrin-complex-embedded liposomes according to the present invention act on superoxide anion radicals (O2?), and can surely lower their concentration, they can exhibit superb effects for the treatment of cancers and have excellent characteristics as antioxidants.