Sculptra (poly-l-lactic acid) is injected into the layers under the skin to stimulate collagen growth. For your comfort, lidocaine will be added to the Sculptra formula and also placed at the entry points. A microfine tube, and in some instances a small needle, will be used to insert the Sculptra into the areas of your buttocks where you would like to add more volume. For part of the procedure, you will be in a standing position; during another part of the procedure, you will lie on your stomach. Once the Sculptra is injected into the treatment region, we will massage the area for a few minutes.