Castor oil has ricinoleic acid. This acid is an effective natural anti-bacterial and anti-fungal agent.This helps to keep any fungus or bacteria from inhibiting hair growth. Since the oil is also very thick, it may help to prevent hair loss simply by helping to coat the hair and protect it from falling out.
Castor oil is also high in omega 9 fatty acids, which are nourishing to both the hair and the follicle, as well as the surrounding skin. Castor oil has a unique ability to penetrate deeply, and this helps it to deliver its nourishment deeply into the pores and the follicles that produce hair.
If you’re looking to regrow the hair on your head, you can use castor oil as a scalp treatment. However it can be tricky to get on the scalp without thinning it out with a lighter oil. You can add some melted coconut oil, apricot kernel oil or another lighter oil to help get it spreadable enough.
If you’re simply looking to help thicken hair that is thinning at the edges of your hairline, you can use pure castor oil, with a light hand of course. Another use is to apply the oil to eyelashes to help thicken and strengthen them, as well as to help prevent thinning and shedding.
Give it a trial.