Patent ID: 8440717

Claim:
A method for regulating hair growth, comprising administering, to a subject in need thereof, a compound represented by the following formula (I): [wherein R 1 represents an unsubstituted, linear C2 alkyl group; or a group represented by the following formula (II): (wherein R 1 ′ represents an unsubstituted, linear C4, C8 or C12 alkylene group, or —(CH 2 ) n —{O—(CH 2 ) m } o —O—(CH 2 ) p — in which each of n, m, o, and p is an integer and n=2, m=2, o=1 or 2, and p=2; X′ represents —CO—NH—; Y′ represents an unsubstituted C1 alkylene group; R 2 ′ represents a C1 alkyl group; and R 3 ′ represents a C1 alkyl group) X represents —NH—CO—; Y represents an unsubstituted C1 alkylene group; R 2 represents a C1 alkyl group; and R 3 represents a C1 alkyl group] or a salt of the compound; and/or a quaternary ammonium salt represented by the following formula (IV): (wherein R 1 , is an unsubstituted, linear C12 alkyl group, X is —NH—CO—, Y is an unsubstituted C1 alkylene and R 4 , R 5 , and R 6 each represent a C1 alkyl group and A − represents a chloride counter ion).