Sunny Isle Jamaican Black Castor Oil 4ozSunny Isle Jamaican Black Castor Oil 4oz: daily manipulation, excessive styling, heat and too tight braids and ponytails have all done a number on my natural hairline and I noticed that on one side of my head there was a small area where my edges had started to thin to the point that you could visibly see my scalp. To solve the problem, my best friend suggested that I try Jamaican Black Castor Oil even though she had only heard about the benefits,