Bosley Professional Strength Bos Revive Nourishing Shampoo (For Visibly Thinning Non Color-Treated Hair) 33.8 oz. A sulfate-free nourishing & reviving shampoo Helps remove toxins such as D.H.T. from hair Formulated with LifeXtend complex to promote healthy follicles Blended with Pentapeptides to accelerate production of root-strengthening Keratin Protein Loaded with Soy Amino Acids that restore strength, thickness & volume Infused with Plankton Extract to shield from photo-aging, frequent washing & damage from brushing Leaves hair fuller, stronger & revitalized Great for visibly thinning, non color-treated hair.