Bosley®, the most recognized hair restoration brand in the world, has created Professional Strength for thicker fuller hair. Bos Revive haircare reconditions hair & rejuvenates the scalp. Paraben-Free Volumizing Conditioner infuses hair with vitality, volume & thicker appearance. LifeXtend complex contains Pentapeptides to help stimulate production of root-strengthening Keratin Protein. Soy Amino Acids help restore strength, thickness & volume. Vegetable Protein helps volumize, thicken & bodify. Emollients smooth & add shine. Plankton Extract helps protect from photo-aging, frequent washing & damage from brushing.