Cantu Biotin Infused Hair and Hair Strengthening Scalp Oil 2 Oz Increases blood circulation to the scalp and promotes healthy hair growth. Lightweight oil, lubricates dry scalp and seals moisture into strands. Made from 99% ingredients of natural origin. Contains rosemary, biotin, avocado oil, tea tree oil and vitamins A and E. Vegan-friendly and cruelty-free. Application: The formula contains effective natural ingredients for optimal effect; therefore, perform a skin test before use. Patch Test Instructions: Apply a small amount directly to the scalp and behind the ear and leave for 24 hours. If you experience itching, bumps or redness, rinse the oil and stop using it. A tingling, cooling or warming sensation on the scalp may occur and is normal. Apply the oil sparingly to the scalp. For thicker, curly and frizzy hair, a generous amount can be applied to strands. For fine, thinner, straight or wavy hair, apply sparingly to strands. Apply to scalp and hair, then gently massage and comb through strands, leave to act and style as desired. Can be used daily and as a pre-wash treatment. For scalp treatment, cover with a cap and leave on for 10 minutes, then rinse.