Recommended if you have sensitive and acne-prone skin that needs gentle treatment. If you are looking for natural herbal ingredients to be absorbed at the bottom of your skin. If you need a water barrier that prevents water evaporation.The velvet nano microfiber mask sheet delivers abundant nutrients efficiently more than any other mask sheet. It has high adherence to the skin due to the small, slim and smooth fibers. Since the surface area of covering the skin is larger, the effectiveness of essence delivery is more than 4 times as compared to other mask packs.