- Clarifying, brightening, blemish-fighting serum - Formulated with 2% Salicylic Acid - Gently sheds dead skin cells for glowing skin A clarifying, brightening, blemish-fighting Biphase serum formulated with 2% Salicylic Acid to gently shed dead skin cells from the skin's surface to reveal glowing skin. Enriched with exfoliant Salicylic Acid, along with a refreshing water phase, this serum is able to penetrate the interior walls of congested pores to unclog and clear impurities.