Biostimulants stimulate collagen formation when introduced into the skin. Biostimulant fillers (Sculptra, Radiesse, Renuva) are composed of various ingredients, such as calcium hydroxyapatite, poly-L-lactic acid, polymethylmethacrylate, allograft adipose matrix, amongst others, and are used to enhance volume, definition, contour and promote skin tightening. In addition to volume restoration, biostimulants are an excellent modality for fine-tuned, non-surgical, body contouring. With the right candidate, you can achieve a non-surgical breast lift and non-surgical butt lift.