Extracted from seeds of the castor bean plant, castor oil is rich in omega fatty acids and bioactive nutrients that may be good for your hair. Though research is limited, there are some indications it might help moisturize hair, shield it, control dandruff, and even stimulate growth. 1. Shields Hair Castor oil’s fatty acids and other nutrients are said to nourish and protect hair. Studies show that its omega-6 and omega-9 fatty acids are able to penetrate hair follicles (in the scalp), providing nutrients that fortify and guard hair. Ricinoleic acid, another major constituent, possesses antimicrobial activity that can also promote hair health. Castor oil also has antioxidants such as tannins and flavonoids, which neutralize free radicals—unstable molecules that can harm cells—and other toxins. 2. … Read more