COSRX AHA 2 BHA 2 Blemish Treatment Serum is an exfoliating Korean treatment for oily, congested and blemish-prone skin. The lightweight formula helps remove dead skin cells, clear excess sebum and improve the look of pores and uneven texture.

A balanced blend of two percent AHA and two percent BHA works on the skin surface and inside clogged pores, helping breakouts look calmer and the complexion smoother. Introduce it gradually to avoid over-exfoliation.

Apply a thin layer to clean, dry skin in the evening two or three times per week. Avoid the eye area and do not combine in the same routine with other strong exfoliants or retinoids. Use sunscreen every day.

Apply a thin, even layer to clean, dry skin, avoiding the eye and lip areas. Start 1–2 evenings per week and increase only if well tolerated. Follow with moisturizer. Do not combine in the same routine with other exfoliating acids or retinoids, and use sunscreen every morning.

AHA and BHA exfoliating acids remove dead surface cells and help clear excess sebum from pores. Soothing ingredients reduce discomfort during exfoliation, while humectants help maintain hydration and support a smoother, clearer and more balanced complexion.