The Seoul Ceuticals Kojic Acid Serum is a brightening treatment formulated to even skin tone, fade dark spots, and combat sun-damage and post‐inflammatory hyperpigmentation. It uses kojic acid as the primary active, supported by ingredients like alpha-arbutin, glycolic acid, and salicylic acid for enhanced exfoliation and skin clarity.  
The texture is lightweight, designed for nightly use (or layered under a daytime sunscreen) and suits skin types concerned with discoloration, uneven tone, or sun-aged skin. Because kojic acid works by inhibiting the enzyme tyrosinase (which triggers melanin production) it’s particularly effective for gently fading pigment and brightening the complexion.