Sculptra works through an ingredient called poly-L-lactic acid, which is injected into the dermal layer. Rather than adding volume through the injectable alone as hyaluronic-acid fillers work, Sculptra’s active ingredient stimulates the body’s natural collagen production. This increases firmness, elasticity, and volume, and is a longer-lasting solution. Sculptra body and butt lift injections are typically used to help enhance your curved shape while still appearing natural and in-line with your natural body type and shape. It can be placed anywhere on the butt that needs volume and can also be used to improve the appearance of cellulite.