I love Castor oil but Jamaican Black castor oil is the ish:)
It leaves the scalp dandruff free and works wonders for hairlines and thickening your hair.
Since I started using it my hair has gotten really thick and strong and my edges have been full until i got my son then had to use other stuff to rescue my hairline because post pregnancy hair-shedding got the best of me.
But all in all, this is a really good oil and should be incorporated into your daily hair-care routine to get the most out of it, because when done right it works wonders for your hair.