APLB Glutathione Niacinamide Sheet Mask (Ingredients Explained) APLB Glutathione Niacinamide Sheet Mask is designed to brighten and hydrate the skin. Key Ingredients: Glutathione (1,000ppm): A potent antioxidant that helps brighten the skin. Niacinamide APLB Glutathione Niacinamide Beauty Tablet contains ingredients that provide antioxidant effect to elimate free radicals in our body. It is formulated with Glutathione that helps decrease the melanin in our body. It APLB Glutathione Niacinamide Sheet Mask