Poly-L lactic Acid (Sculptra) Fillers

When injected under the skin, poly-L lactic acid (PLLA) stimulates skin cells to make collagen. Poly-L lactic acid is nontoxic, and has been widely used as a component of suture material for years.

PLLA is FDA-approved for cosmetic treatment of certain skin conditions in HIV patients. It is often legally used "off-label" to treat wrinkles in otherwise healthy people. It's considered "semi-permanent," meaning results can last for months to years.