Bio Dual Cellulose Mask :: Esthetic, medical specialty store products Dr. PaceLeader 1-3 times a week, widely used for home care. Among mask packs on sale, there are many ones made of cotton or non-woven fabric. Do you know that there are many different types of mask packs? The mask pack is divided into 1-4 steps. Step 1 cotton, non-woven mask, s tep 2 hydrogel mask, s tep 3 bio mask and step 4 bio cellulose mask. Nowadays, people of all ages are interested in skin care/home care products. Our products are not low cost cotton or non-woven masks sold on the market, but bio-cellulose masks that are actually used in medical utility, which can quickly soothe skin redness, moisturize and nourish the skin effectively.