Jamaican black castor oil is processed in the traditional way. Our organic seeds are roasted and ground by a manual mill. The crushed grains are then cooked to extract the 100% pure dark brown oil. This is the darkest Jamaican black castor oil because we roast our beans longer, creating more ash in our oil than any other oil on the market. Higher ash content increases the efficiency of the oil. Therefore, Yari brand strengthens and enlarges your hair faster than any other brand on the market today.