Sculptra is a safe, effective product that has been on the market for years. It is made of poly - L - lactic acid which has been a primary ingredient in absorbable sutures for decades. The product has proved to be an effective biostimulant and the volumization seen after injection is due to the body's own production of new collagen, rather than simply the injection of the material, as with most traditional fillers. It is great for patients who have lost weight or simply have low body fat composition. All procedures carry some associated risks, so make certain to find an experienced injector for an exam, thoughtful conversation of your goals, and discussion of risks and benefits of treatment.