Can castor oil thicken my hair?

I was born with thin hair. It sucks cause you can see my scalp in some places.

2 Answers

The science on this seems to be iffy at best. Some people claim that the omega-9 in castor oil can cause hair to grow in better.  Some say simply applying the oil to the strands make them appear thicker. If you're trying to grow more hair, a lot of curlies have had luck with biotin supplements. 
This article might be helpful for you as to try to learn more about how to stop hair loss in women.