B&B Derma's JBco Jamaican black castor oil helps strengthen hair. Replenishes. Rejuvenates. Nourishes. Natural ingredients. These are powerful all-purpose soothing oils roasted and ground manually from Jamaican castor beans. These pure and unrefined oils retain their nutritive properties, making them great for skin softening, moisturizing massage oils, or hot oil treatments for dry damaged hair.