Our Super Potent Jamaican Black Castor Oil combines the stimulating effects of garlic and onion oils to decrease hair shedding and promote hair growth. With all-natural ingredients, including Castor Oil, Vitamin E, Sulfur, Biotin, Niacin, Zinc, and Capsicum Frutescens, plus essential oils like Rosemary, Peppermint, Lavender, Garlic, and Onion, you can enjoy stronger, thicker hair. Directions Measure the amount of Castor Oil that you require. Pre or post wash apply the oil to the scalp, hair root or on affected areas of skin.