what ingredients are best for acne?
["RELATED: The Dermatologist's Guide to Healthy Skin and the Exposome [Ad]", 'Alpha-hydroxy acids (AHAs). ... ', 'Benzoyl peroxide. ... ', 'Clay. ... ', 'Salicylic acid. ... ', 'Sulfur. ... ', 'Tea-tree oil. ... ', 'RELATED: Best Drugstore Face Masks for Acne-Prone Skin.']