Salicylic Acid
What it does
Salicylic acid is a beta hydroxy acid (BHA). Unlike water-soluble exfoliants, it is oil-soluble, so it can work inside the pore to dissolve the mix of oil and dead skin that leads to blackheads and breakouts. That makes it one of the most useful ingredients for oily and acne-prone skin.
What to know
It is typically used at 0.5–2%. Because it exfoliates, it can be drying or a little irritating if overused, so dry and sensitive skin should go gently and build up frequency. As with most exfoliating actives, daily sunscreen is a good idea while you use it.
Commonly found in
Cleansers, toners, spot treatments, and exfoliating serums.
Frequently asked questions
What does salicylic acid do?
It is an oil-soluble exfoliant (a BHA) that can get inside pores to clear out oil and dead skin, which is why it is a go-to for blackheads and breakouts.
Who is salicylic acid best for?
Oily, combination, and acne-prone skin tend to benefit most. Dry or sensitive skin should use it sparingly, as it can be drying.
Can I use salicylic acid if pregnant?
Low-percentage topical use is often considered acceptable, but advice varies. It is best to check with your doctor or a professional if you are pregnant.
Evidence
Last updated: August 5, 2026