Mamado aromatherapy Natural Original Jamaican Black Castor Oil is powerful all-purpose healing oils made from Jamaican castor beans roasted and grounded manually then boiled to produce natural organic oil. Our Jamaican black castor oils are pure and unrefined, retaining all their nutritive properties making them great as a skin softening, moisturizing massage oil or as a hot oil treatment for dry and damaged hair, hair growth and thinning hair.