Sustained release of active molecules from polymers topically applied to skin or hair

摘要

The invention relates to a polymer for topical delivery of biologically active ingredients, the polymer comprising at least one moiety: U-B-A in which U represents a physiologically acceptable unit of an oligomer or polymer, A represents a biologically active component, and B represents one or more bond(s) linking A to U, which bond is capable of being disrupted by a biological, physical or chemical process occurring in or on skin.