RADIESSE is a dermal filler that delivers calcium hydroxylapatite (CaHA) in a gel carrier into the dermis and subcutaneous layer, providing immediate volume upon injection. Over time, the carrier gel is gradually absorbed, and the remaining CaHA microparticles stimulate fibroblasts to produce new collagen, elastin, and proteoglycans. This allows for improvements in not only volume but also skin firmness and texture.