Hexane Free Castor Oil is a natural emollient that penetrates the surface layers of the skin making it softer and more supple. Pure, natural emollient oil. Softens and nourishes the skin. Excellent for massage into joints and muscle. 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 qualities to the body.