Sculptra is different from hyaluronic acid fillers. It is known as a Poly-L-Lactic Acid and is considered a bio-activator or “volumizer”. Sculptra addresses the underlying cause of collagen loss and works by stimulating the body to produce new collagen at the sites of injection, thereby replacing lost volume and contours to restore a fuller, more youthful appearance. The results are natural looking and appear over a period of a few months and last for two years. Hyaluronic fillers work immediately to fill in lines upon injection and last up to a year or so.