CERAMIDE-LIKE FUNCTION IMPARTING AGENT

摘要

Provided are: a ceramide-like function imparting agent which imparts a function similar to that of a ceramide; a skin barrier function reinforcing agent; a moisturizing agent; and an external preparation for the skin. A ceramide-like function imparting agent which contains, as an active ingredient, a succinic acid diamide derivative represented by formula (1). (In the formula, each of R1 and R2 independently represents a hydroxyalkyl group having 1-6 carbon atoms; and R3 represents a -CH2CH2CH2CH2-R4 group or a -CH2CH=CHCH2-R4 group (wherein R4 represents an alkyl group having 8-26 carbon atoms).)