Salicylic acid, also known as beta hydroxy acid (BHA), is an exfoliant that unclogs pores and helps with cell turnover for clearer, brighter skin. Dermatologists and estheticians can perform high-concentration salicylic acid peels in-office for deep penetration. It causes the outermost layer of skin to slough off to reveal healthy new skin. Professional peels have 30–50% salicylic acid and a low pH to maximize their effectiveness.Â
BHA is oil-soluble, so it can penetrate pores to dissolve sebum (the main ingredient in your body’s natural oils) and dead skin cells. This makes it especially good for treating oily skin with blackheads and whiteheads, and it’s why BHA is often the active ingredient in skincare products made to treat acne. Salicylic acid also has anti-inflammatory properties that can reduce redness and hyperpigmentation while making it more gentle than alpha hydroxy acids (AHAs), such as lactic acid and glycolic acid (though chemical peels and exfoliating skincare products often combine BHAs with AHAs).
A single salicylic peel will brighten and smooth skin, but a series of peels is more effective for significant results. Doctors on RealSelf recommend four to six peels, spaced about one month apart.

