Sunny Isle Jamaican Black Castor Oil Hair Gel stimulates hair growth while keeping your edges in place, is infused with Jamaican Black Castor Oil, moisturizes and gives vibrant shine. Sunny Isle Jamaican Black Castor Oil Edge Hair Gel is ideal for relaxed, natural hair, is naturally packed with vitamin E and proteins needed for a healthy scalp and healthy skin. Both oils have antibacterial properties, so imagine what your skin and hair would look like.