Sunny Isle Extra Dark Jamaican Black Castor Oil is authentic and contains no salt. Excellent addition to any hair care regimen. Can be used for sealing in moisture in hair, use in conjunction with your conditioner, hot oil treatment, apply to fungal and bacterial infections topically, itching, wounds, abdominal stretch marks and many other benefits. Extra Dark Oil, as the name implies, has the most Ash Content. It is thick and rich and is the most effective Oil for all your Hair and Skin conditions. Sunny Isle Extra Dark Jamaican Black Castor Oil is processed the traditional way. The Organic seeds are roasted and ground by a manual Grinder and then the crushed beans are boiled to extract the pure pure, dark brown, organic oil. It's one of the best quality oil on the market. Why you may ask Compared to other brands it is the darkest Jamaican Black Castor Oil because we roast our beans longer which produces more Ash Content in our oil than any other oil on the market. More ash content increases the effectiveness of the oil.