Using your Sferra Fiona King Pillowcases is easy. Just slip them onto your pillows and enjoy the softness. When it's time to clean, use warm water and a gentle cycle in your washing machine. Don't add bleach because it can damage the fabric and make it turn yellow. Also, don't use fabric softener. Wash dark - colored pillowcases separately to prevent color bleeding. After washing, tumble dry on low heat. Take them out of the dryer while they're still a bit damp. If you want them to look extra shiny, iron them on the 'cotton' setting.