| abstract |
[Problem] To provide a ceramide-like function-imparting agent, a skin barrier function reinforcing agent, a moisturizing agent, and an external preparation for skin that impart the same function as ceramide. The following formula (1): wherein R1 and R2 independently represent a hydroxyalkyl group having 1 to 6 carbon atoms, and R3 represents a group -CH2CH2CH2CH2-R4 or a group -CH2CH = CHCH2-R4 (here And R4 represents an alkyl group having 8 to 26 carbon atoms). A ceramide-like function-imparting agent comprising a succinic diamide derivative represented by the formula: [Selection figure] None |