Abstract: To provide a cosmetic resin composition for preparation of a hair fixative having all properties of stiffness, shampoo removability, feel, gloss, combability and anti-flaking property. A cosmetic resin composition consisting essentially of an amphoteric urethane resin having a carboxyl group and a tertiary amino group in one molecule thereof, the amphoteric urethane resin having polysiloxane linkage in its structure.

Abstract: The present invention provides a cosmetic which is superior in both characteristics of feel and spread at the time of application. The cosmetic is a cosmetic comprising an amphoteric urethane resin having carboxyl group(s) and tertiary amino group(s) in a molecule, and a silicone polymer.

Abstract: A cosmetic resin composition consisting essentially of an amphoteric urethane resin having a carboxyl group and a tertiary amino group in one molecule there of, the amphoteric urethane resin having a structural unit derived from an ethylene oxide in its structure.

Abstract: A dispersant composition for inorganic substances, used in the presence of an aqueous solvent, is characterized by containing a polymer containing polyalkylene oxide groups, anionic and cationic groups, the polyalkylene oxide group being represented by formula (I): —(R1—O)n-R2 [in formula (I), R1 represents an ethylene group or a propylene group, R2 represents an alkyl group having carbon atoms of 1 to 20, which may contain hydrogen or a substitute group, and n is an integer in the range of 1 to 300]. The anionic group is preferably selected from the group consisting of a carboxyl group, sulfonic acid group, phosphoric acid group, carboxylate group, sulfonate group and phosphate group. The cationic group is preferably selected from the group consisting of an amino group and an ammonium base. Thus, the dispersant composition for inorganic substances makes it possible to improve at least one of the dispersing property and dispersing stability of the inorganic substance in water.