Sunny Isle Jamaican Black Castor Oil Must-have beauty product: strengthened hair follicles, a healthy scalp, thick, healthy long hair, eyebrows and lashes, clear youthful skin, relief from discomfort of a variety of skin conditions ... our jamaican black castor oil is an all-round, great natural product to incorporate into your daily beauty routine.great for scalp, hair, skin & more: this potent oil is effective on dry scalp dull and damaged hair, as well as dry skin. apply to eyebrows and eyelashes to boost their growth & appearance