Some patients feel very self confident about their ‘hip dips’ but don’t necessarily want or can get a surgical fat transfer. For the right or appropriately selected patient or indication, Dr. Rotsaert uses a substance called Sculptra, a poly-L-lactic acid (PLLA). Sculptra is different from hyaluronic acid because it’s a biocompatible synthetic filler that stimulates collagen production. Over the course of 6-8 weeks the treated area will continue to grow. Sculptra can also improve the appearance of stretch marks and cellulite.