COSRX AHA/BHA Clarifying Treatment Toner contains Alfa and Beta Hydroxy Acids, which provide the skin with softness and smoothness. The active ingredients in this toner renew the skin making it look smoother and brighter. With regular use the skin will maintain a glowy and bright appearance. KEY INGREDIENTS -BHA (Beta Hydroxy Acid) clears congested pores by preventing dead skin cells from clogging the sebaceous glands. -AHA (Alpha Hydroxy Acid) exfoliates the dead skin cells from the surface of the skin making the skin appear brighter. This exfoliating treatment toner with AHA and BHA helps to prevent new blackheads and blemishes from forming while maintaining an optimal pH balance for the skin. Evens out skin tone and makes the skin feel softer and smoother. Suitable for skin prone to blemishes and oiliness. Perfect for fading out acne scars and dark spots.