Sub-acid mask that gently permeates Glutathione into the skin, brightening the skin tone like snow. Help purifying skin with blemishes and freckles to brighten and moisturize skin starting from inside! Brightening Care: Glutathione and Niacinamide ingredients are evenly absorbed into the dull skin, producing the skin tone bright and clean. pH6.0(±1.0) Sub-acid Mask: The fruit vinegar ingredient makes the skin to healthiest and slightly acidic state by controlling the pH balance disturbed by the external environment. Comfortable Air Mesh Sheet: With highly permeable mesh material, the sheet adheres lightly to the skin for it to breathe, and delivers active ingredients gently.