Jamaican Black Castor Oil 60ml Help in hair growth, prevents split ends and Breakage of hair It helps in thickening the hair shaft and prevent thinning of hair. And Stimulates hair Growth. How to use: On clean and wet hair Apply a little oil on your fingertips and with circular movements. Soak the scalp with oil until it is soaked. Then rub the hair with oil. Cover the hair and leave it for as long as possible. Wash your hair as usual.