Doo Gro Jamaican Black Castor Oil 4 oz. Authentic oil from Jamaica. Nourishes, thickens, and detangles hair. Supports healthy growth for all hair types. Used to repair damage and allow growth. JBCO has no added charcoal or color. It nourishes, moisturizes, thickens, softens, and detangles hair leaving it fortified and renewed while making it more manageable.