Cloud & Glow Silk Pillowcase is made from the highest quality 22 momme 6A grade 100% mulberry silk.-your skin & hair retain natural moisture-the appearance of facial creases and lines-tangles, frizz, and damage-and eco-friendly-comfortably cool when temperatures rise-smooth finish does not absorb moisture like traditional cottonWash at a temperature no higher than 30°C, preferably in a laundry bag, with an enzyme-free liquid detergent. Do not use fabric softener and do not tumble dry.-Pillowcase is certified with OEKO-TEX® Standard 100. The certification guarantees that the product is tested and free of substances that can be harmful to your health and the environment. Cloud & Glow Spring Collection Silk Pillowcase Charcoal