Sculptra and Radiesse are injected in a unique way when used for body contouring. Sculptra and Radiesse are injected deeply into the dermal layer of the skin. Then, their unique PLLA structures rebuild lost collagen and provide structural support to the skin. As the PLLA is absorbed, a healthy collagen structure is made. The healthy collagen structure provides a new foundation that results in firmer, plumper-looking skin.