Castor oil improves blood circulation at the scalp, ensuring better nutrition for the hair follicles. This acid also helps balance the pH of the scalp. Castor oil is rich in antioxidants that support the keratin in hair, making it smoother, stronger, and less frizzy. Argan Oil penetrates the hair to help moisturize each layer of the hair strand for long-term hair repair. This rich formula helps your hair actually look and feel healthier, silkier, and extraordinarily shiny. Argan Oil is rich in vitamin E and essential fatty acids.