Benefits of Salicylic Acid For AcneSalicylic acid is a crucial ingredient in several nonprescription acne treatments. It dries up blackheads and whiteheads along with minimizing excess oil. It can also aid fading acne scars, although it may take a while.Like benzoyl peroxide, it works by unplugging skin pores. But it does so in a different way.1. B