COSRX The Alpha Arbutin 2 Discoloration Care Serum is formulated with tranexamic acid, niacinamide, N-Acetylglucosamine (NAG), and alpha-arbutin to help fade dark spots, brighten uneven skin tone, and strengthen the skin’s barrier. Enriched with glutathione and ferulic acid, it effectively treats hyperpigmentation and post-acne scars. This serum is suitable for all skin types, including sensitive skin