Castor oil is authentic and does not contain salt. Great addition to any hair care regimen. Can be used to seal moisture in hair, in conjunction with your conditioner, hot oil treatment, topical application for fungal and bacterial infections, itchy skin, sores, abdominal stretch marks and many other benefits . , as its name suggests, contains the most ash. It is thick and rich and is the most effective oil for all hair and skin conditions. Sunny Isle Extra Dark Jamaican Black Castor Oil is traditionally processed. The organic seeds are roasted and ground by a manual mill, then the crushed beans are cooked to extract the 100% pure, dark brown organic oil. It is one of the highest quality oils on the market. Why do you ask? Compared to other brands, this is the darkest Jamaican Black Castor Oil because we roast our beans longer, which produces more ash in our oil than any other oil on the market. Higher ash content increases the efficiency of the oil.