Jamaican Mango & Lime Pure Jamaican Black Castor Oil Original. Deeply Conditions. Makes hair stronger. Seals Moisture. Hot Oil Treatment. Natural Ingredients. Jamaican Mango & Lime Jamaican Black Castor Oils are powerful all purpose soothing oils roasted and ground manually from Jamaican castor beans, then boiled to produce 100% pure castor oil. These pure and unrefined oils, retain their nutritive properties making them great for skin softening, moisturizing massage oils or as a hot oil treatment for dry treatments for dry damaged hair.