Compositions useful for carrying physiologically active agents such as therapeutic agents through skin and other body membranes comprising the agent and an effective, non-toxic amount of a compound having the structural formula ##STR1## wherein R' is H or a lower alkyl group, m is 3-7, N is 0-17 and R is --CH.sub.3, phenyl or substituted phenyl or ##STR2## with the proviso that if m is 3 and R is --CH.sub.3, then n is not 0-6.
Compositions useful for carrying physiologically active agents such as therapeutic agents through skin and other body membranes comprising the agent and an effective, non-toxic amount of a compound having the structural formula ##STR1## wherein R' is H or a lower alkyl group, m is 3-7, N is 0-17 and R is --CH.sub.3, phenyl or substituted phenyl or ##STR2## with the proviso that if m is 3 and R is --CH.sub.3, then n is not 0-6.