PAULAS CHOICE Skin Perfecting 2% BHA Liquid Exfoliant contains 2% salicylic acid (beta hydroxy acid or BHA) as its main active ingredient. BHA is known for its ability to exfoliate the skin by penetrating deep into the pores, removing dead skin cells, unclogging pores, and reducing blackheads and whiteheads.

1. Exfoliation: The 2% BHA concentration in this product allows for effective exfoliation. BHA is oil-soluble, which means it can penetrate into the pores and help dissolve excess oil and debris, reducing the appearance of enlarged pores and preventing breakouts.
2. Anti-inflammatory properties: Salicylic acid has anti-inflammatory properties, which can help calm redness and irritation in the skin. It can be beneficial for individuals with acne-prone or sensitive skin.