| abstract |
The present invention provides a urethane polymer having a structure represented by general formula (1), an oil composition in which the urethane polymer is dissolved, and a cosmetic composition containing the oil composition (in the formula, R 1 and R 2 each independently represent a C5-40 alkylene group, Z 1 and Z 2 each represent an oxyalkylene group represented by general formula (2) or (3) provided in the description, R 3 represents a diisocyanate residue, X 1 represents a hydrogen atom or a group represented by general formula (4) provided in the description, X 2 represents a hydrogen atom or a group represented by general formula (5) provided in the description, and n represents a number from 1 to 20 (provided that n represents 1 when X 1 and X 2 are a hydrogen atom)). |