Mamado Jamaican Black Castor Oil. Promotes hair growth. Versatile skin care. Mamado's Natural Jamaican Black Castor Oil is a powerful all-purpose healing oil made from naturally roasted and ground Jamaican castor beans then boiled to produce natural organic oil. It is a pure, unrefined oil and retains all of its nourishing properties, making it excellent as a skin-smoothing and moisturizing massage oil or as a hot oil treatment for dry and damaged hair, hair growth and hair loss. weakened. How to use: Apply a generous amount of oil to the desired area and massage as needed. For smooth hair, simply add a few drops to your favorite shampoo before washing. Style as desired. Apply a small amount of oil to hands and rub into dry, problem areas. Best results if used after shampooing or bathing.