What Is a BHA? Salicylic Acid for Oily and Congested Looking Skin
Beta hydroxy acid, in practice salicylic acid: an oil soluble exfoliant that gets into pores rather than sitting on the surface.
On the label
Salicylic acid or betaine salicylate. Common in cleansers and toners for oily skin.
What it does not mean
It does not suit dry, fine lined skin, and it is not a rolling night product. Keep it to the oily areas and its own nights.