O HUI Extreme White Sleeping MaskThis invigorating brightening mask works overnight as the skin goes to rest. Skin is noticeably brighter, softer and more even after the luxury treatment. Infused with Snow Vitamin, incorporating Vitamin B3 (Niacinamide) to illuminate the skin. [Directions] At the last step of skincare, take an appropriate amount and apply lightly to the entire face. Can be used on the neck as well. About Brand: O HUI O HUI is a Korean luxury skin care brand offering