This ultra-light, volumizing shampoo for fine hair strengthens, repairs and protects against future damage caused by everyday environmental influences, styling or salon treatments with clinically proven efficacy.* The ideal shampoo for fine hair should not only provide volume, but also repair the hair at the same time. No.4FINE gently removes build-up and leaves hair clean, smooth and with long-lasting volume, body and bounce - without weighing it down or drying it out.*When used with No.5FINE Bond Maintenance® Conditioner.Gently cleanses without drying outStrengthens and protectsRemoves build-up to increase volume and hold at the rootsInstantly doubles hair volume and lasts all day60% less hair breakage (tested on bleached hair)Repairs and clinically proven to prevent future damageClinically proven to strengthen the hairApplication: Apply to wet hair. Lather up. Rinse out. Follow with No.5FINE Bond Maintenance® Conditioner.Warning: Avoid contact with eyes.