After age 20, you lose about 1% of collagen per year. Sculptra is the first and original FDA-approved poly-L-lactic acid (PLLA-SCA) facial injectable that targets fine lines, wrinkles, sagging, and other signs of aging due to collagen loss. It gradually helps restore your skin foundation and volume, with results seen as early as 1 month after treatment and lasting up to 2 years, revealing natural-looking firmness and improved skin quality. The number of total vials needed will vary by age, treatment area, and severity of volume loss. A common rule of thumb is one vial per decade of life (some may need more especially if you are on a GLP-1).