| abstract |
PROBLEM TO BE SOLVED: To provide a preparation stably blended with hardly soluble components such as ceramide, sterols typified by vegetable sterols, and their glycosides, which have preferable effects on skin and hair. [MEANS FOR SOLVING PROBLEMS] An external composition contains 1) ceramide, 2) sterol or a glycoside thereof, and 3) a cationic surfactant represented by the following general formula (1). The ceramide is preferably ceramide type 2, and the content thereof is preferably 0.01 to 5% by mass. [Chemical 1] General formula (1) (In the formula, R1 and R2 each independently represents an alkyl group having 1 to 4 carbon atoms, R3 and R4 each independently represents an alkyl group or alkenyl group having 10 to 24 carbon atoms, and X- a represents a mineral acid group. And a represents an integer of 1 to 3.) [Selection figure] None |