Sculptra is a poly-L-lactic acid implant that comes in the form of a sterile, non-pyrogenic suspension. This suspension is made by adding sterile water to a sterile dry powder (Ph.Eur.). Microparticles of poly-L-lactic acid, which is the crystalline form of polylactic acid, are in this suspension. Poly-L-lactic acid is a synthetic polymer that is biocompatible and biodegradable. It is in the alpha-hydroxy acid family. https://www.marx-med.com/55/fillers/hyaluronidase-1500u