The COSRX AHA 2 BHA 2 Blemish Treatment Serum is a powerful exfoliating serum formulated with 2% alpha hydroxy acids (AHA) and 2% beta hydroxy acids (BHA) to target acne, blemishes, and uneven skin texture. This 120g serum gently removes dead skin cells, unclogs pores, and controls excess sebum while soothing irritation with betaine salicylate and willow bark extract. Ideal for acne-prone or oily skin types, it helps refine skin texture, fade post-acne marks, and prevent future breakouts without over-drying. Regular use promotes clearer, smoother skin with minimized pores and a balanced complexion. Its lightweight, fast-absorbing formula layers well under moisturizers and works effectively as a targeted treatment or all-over exfoliant.