Patent ID: 8778322

Claim:
A micellar composition comprising a di- or poly-lactic acid derivative in an aqueous solution with a pH of 4 or higher, said di- or poly-lactic acid derivative can be represented by formula (I): RO—CHZ-[A] n -[B] m -COOM (I) wherein A is —COO—CHZ; B is —COO—CHY—, —COO—CH 2 CH 2 CH 2 CH 2 CH 2 —, or —COO—CH 2 CH 2 OCH 2 —; R is hydrogen, an acetyl, benzoyl, decanoyl, methyl, or ethyl group; Z and Y are hydrogen, methyl, or phenyl groups; M is sodium, potassium, or lithium; n is an integer from 5 to 30; and m is an integer from 0 to 20, and wherein the di- or poly-lactic acid derivative has a number average molecular weight of 500 to 2,000 Daltons.