Salicylic Acid

by Who What Wear

There may be thousands of products swearing to zap your zits, but there's one ingredient at the heart of many that's actually doing the work: salicylic acid. Your first encounter with the ingredient was probably around age 13; now it's a mainstay in your medicine cabinet. But what does it actually do? Do you need 0.5% or 2%? How often can you use it? We checked with an expert, dermatologist Dr. Murad, to get the answers and picked out a few of our favorite salicylic acid-based formulas, below.

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