3-Step System. Now with 100% More Biotin Vitamin B6. 30 Day Supply. Ultra concentrated, highly intensive system, with Pro-Oxiden HG that encourages healthy hair growth. Formulated with extra moisture to nourish color-treated and chemically processed hair. Maximizes the potential for healthy, strong, fuller looking hair when used according to the instructions. Delivers nourishment and oxygen to the root of the hair shaft. Thicker, Fuller-Looking Hair in Just One Week.* Color-safe. Nutri-Ox Starter Kit for Extremely Thin – Chemically-Treated is ideal for fine, chemically-treated hair that is in the extreme stages of thinning and loss. Use Nutri-Ox Shampoo and Conditioner, and follow with Treatment. After towel drying hair or when scalp is dry, spray treatment 10 times. Use twice daily, morning and night. Contains: Step 1: Shampoo Chemically-Treated Step 2: Conditioner Chemically-Treated Step 3C: Treatment for Extremely Thin