12/case for the preparation and use of castor oil packs. Contains: 100% white wool flannel. Heavy quality. Unbleached. directions: fold to a size large enough to cover the body area involved. Pour castor oil into the flannel until the it is saturated but not dripping. Apply saturated cloth to the desired body area. May be stored in a plastic bag in the refrigerator for future use. 05/04/17