celimax Pore + Dark Spot Brightening Serum Mask is a sheet mask saturated with a full bottle's worth of brightening serum, formulated with Niacinamide, Tranexamic Acid, Arbutin, Glutathione, and Melazero V2, alongside AHA/PHA exfoliants and 10 types of hyaluronic acid, to visibly fade dark spots, refine pores, and deliver deep hydration in a single treatment.