Both Salicylic Acid and Benzoyl Peroxide target a major cause of acne—the pore-clogging buildup of dead skin cells. However, there is a major difference between the two common acne-fighting skin care ingredients. Salicylic Acid, derived from the bark of the willow tree, boasts anti-inflammatory properties to help keep acne-prone skin calm while treating the cause of the condition. Benzoyl Peroxide-based acne treatments tend to lead to dryness, peeling, redness, and even swelling—symptoms that most BP users can attest to. Delivered in .5% to 2% concentrations, Salicylic Acid works to help clear up mild to moderate acne without over-drying the skin. Here’s where you can find it: Acne Facial Cleanser, Anti-Acne Serum, and Drying Lotion.