This Cosrx AHA/BHA Vitamin C Booster Serum/30ml is a powerful blend of AHA and BHA acids with added vitamin C to improve the overall brightness and texture of the skin. Its scientifically formulated ingredients work to gently exfoliate and brighten the complexion, revealing a more radiant and even skin tone. Ideal for those looking to target dullness, uneven skin tone, and fine lines.