A brightening functional sheet mask formulated with a mildly acidic pH similar to natural skin, infused with Glutathiosome™ to target dullness and visible dark spots. The bamboo + albumin (ALBAM) sheet is coated with Glutathiosome™, niacinamide, and a vitamin C derivative. When applied, the sheet gently contracts to adhere closely to the skin, helping deliver the essence effectively. Each mask contains the equivalent of one 30 mL serum, designed to deeply nourish the skin and promote a clearer, more radiant, and revitalized complexion.