A Skincare Guide to Beta Hydroxy Acid or BHA

When people refer to BHA or beta hydroxy acid, they are usually referring to salicylic acid, a common and effective topical treatment for acne or dandruff. But there are is more to BHAs or beta hydroxy acids than just salicylic acid or acne. So what exactly is BHA or beta hydroxy acid and what makes it such a notable topical? This guide explains the benefits, side effects, different types of beta hydroxy acids, and offer some recommendations for beta hydroxy products for skin and scalp problems.