Castor Oil is obtained from the seed of Ricinum communis (in Jamaica it is called walnut tree) and has been fully refined and purified. This product meets all requirements set forth by the United States Pharmacopoeia (USP). Our Natural Castor Oil is 100% pure, which can be used as a laxative or lubricant. Our Black and Gold Castor Oil is processed to enhance its quality. We have added Vitamin E, Panthenol (B5), Vitamin D, Essential Oils, and fragrance to promote hair growth. Our Black Castor Oil is bottled in clear containers to show the true blackness of this oil. (Some manufacturers use amber colored bottles to disguise the lack of color.)