Harvard-trained dermatologist shares 5 glycolic acid secrets you probably didn’t know

Glycolic acid, a dermatologist-trusted ingredient, offers versatile skincare benefits beyond facial treatments. It effectively combats back acne by dissolving pore buildup, softens rough elbows and knees, and smooths persistent bumps from keratosis pilaris. Additionally, it prevents ingrown hairs and tackles foot odor and calluses by shedding dead skin.