Microfiber does not retail impurities, it is washable into machine 50°C, it gets dry in a few minutes. Microfiber removes make up also without using chemical cleansers and it does not cause any allergy. Microfiber Mitt provides a gentle and deep pores cleansing. Microfiber used by us in manufacturing is spinned in Italy respecting top quality standards. Do not bleach. Do not iron. Do not use softener.