Castor oil, rich in fatty acids and nutrients, helps nourish the scalp, strengthen hair follicles, and promote hair growth. When used consistently, it can reduce hair thinning and enhance hair thickness. Proper application and combining with other oils can maximize its effectiveness.Castor oil, rich in fatty acids and nutrients, helps nourish the scalp, strengthen hair follicles, and promote hair growth. When used consistently, it can reduce hair thinning and enhance hair thickness. Proper application and combining with other oils can maximize its effectiveness.