The AHA 2 BHA 2 Blemish Treatment Serum by Cosrx is an innovative serum formulated with gentle exfoliating acids, AHA and BHA, in balanced concentrations to improve skin texture and reduce imperfections. Thanks to its exfoliating action, it promotes cell renewal, unclogs pores, and effectively fights blackheads and acne. Lightweight and non-comedogenic, it is ideal for impure and sensitive skin, ensuring a brighter and more even complexion in a safe and gradual manner.