The better you care for your slip®, the better it will care for you! 
Use  gentle pH neutral liquid detergent (or fabric softener). Wash slip™ silk pillowcases on delicate cycle setting with cold water. Use  gentle pH neutral liquid detergent (or fabric softener) when hand washing your slip™ silk pillowcases in cold water and lightly agitate then rinse thoroughly. Please see inside your slip™ for detailed care instructions.