This unique shampoo with Redensyl® , niacin and caffeine creates the conditions for stronger, fuller and thicker hair. Keratin amino acids nourish the hair and scalp, while green tea and natural wood extract provide antioxidant support. Directions: Massage gently into wet hair for 1 to 3 minutes, lather and rinse after 2 minutes. When using with the Scalp Booster, apply directly to oiled hair and scalp. Gradually add small amounts of water and lather up Leave on for 2 minutes and then rinse thoroughly.