WASO YUZU-C beauty sleeping mask 50 ml WASO YUZU-C beauty sleeping mask 50 ml This product is a sleeping mask from the Japanese brand, Shiseido. It is a light, non-greasy lotion that is enriched with yuzu citrus extract and Vitamin C for a brighter complexion. It helps to reduce dullness, fine lines, and wrinkles, while providing intense hydration. It also helps to reduce the appearance of dark spots and pigmentation. The product is dermatologist tested and suitable for all skin types.