sunny isle jamaican black castor oil is processed the traditional way. The organic seeds are roasted and ground by a manual grinder and then the crushed beans are boiled to extract the 100% pure, dark brown, organic oil. It's the best quality oil on the market. Why you may ask? Compared to other brands it is the darkest jamaican black castor oil because the beans are roasted longer which produces more ash content in tbe oil than any other oil on the market. More ash content increases the effectiveness of the oil. Therefore the sunny isle brand will strengthen increase the length of your hair faster than any other brands on the market today.