A gentle, chemical-based lip exfoliator with five percent polyhydroxy acid (gluconolactone) to smooth and hydrate lips. Skin Type: Dry Skincare Concerns: Dryness Formulation: Treatment Ingredient Callouts: Free of formaldehydes, formaldehyde-releasing agents, mineral oil, and coal tar. It is also vegan and cruelty-free. What Else You Need to Know: The PHA 5% Exfoliating Lip Serum is a gentle, chemical-based exfoliator for lips with five percent gluconolactone and 1.5 percent alpha hydroxy acids