COSRX The AHA 2 BHA 2 Blemish Treatment Serum 50 g L Valine Diethylamino Hydroxybenzoyl Hexyl Benzoate (UV Kolor:Berry Purple Diethylamino Hydroxybenzoyl Hexyl Benzoate (UV filter) Supplemental Information Amount Per Serving % Daily Value Iodine (elemental) inhibits the growth of acne causing bacteria and supports the healing of inflammation COSRX The AHA 2 BHA 2 Blemish Treatment Serum is a product with a unique application method: cotton balls soaked in active serum