Castor oil is a natural emollient that penetrates the surface layers of the skin making it softer and more pliable. The effects of externally applied Castor Oil can be enhanced through the use of a "Castor Oil Pack" - a piece of wool flannel saturated with the oil and applied to the body. Use of a pack allows the greatest penetration in a specific area of the body. The application of heat further increases this penetration, allowing the oil to better impart its natural qualities to the body. More instructions for the preparation and application for the Castor Oil Packs Come with each package of Home Health Wool Flannel.