Collagen stimulators like Sculptra(PLLA), and Juvelook Volume(PDLLA), are substances that are injected into the skin to stimulate the body’s natural collagen production. Collagen is a protein that provides structure and firmness to the skin, but its production decreases as we age, leading to skin sagging and the formation of wrinkles. Collagen stimulators help replenish lost collagen and activate the skin’s natural regenerative process that subtly restores facial volume.