Sculptra® Aesthetic ( poly-L-lactic acid) is perfect if you want natural-looking results that erases years through a subtle increase in facial volume. Unlike hyaluronic acid fillers, volume replacement is achieved by stimulating your own collagen from within so you never look overdone. The more collagen your skin has, the more elastin and hyaluronic acid it can hold. Sculptra® Aesthetic , injected more deeply can be layered with hyaluronic acid fillers. Results build up over a course of 3 or 4 injection monthly sessions and can last up to two years.