Our black seed oil serum contains black seed oil. It can help retain moisture and moisturize the skin, reduce rashes and spots, fade blemishes and wrinkles, and repair the effects of sun exposure and time on the skin. Its use is simple: Add 1-2 drops of essential oil to shampoo or conditioner and apply it to your hair; If you have wet hair, apply 10 drops of essential oil to your hair. It also nourishes hair and moisturizes scalp.