Biolage Keratin Dose Hair Shampoo Damaged, over-processed hair can be brittle, dull and lifeless. Formulated with Pro-Keratin and Silk, our keratin shampoo provides targeted reinforcement for over-processed, weak or fragile hair. When combined with the KeratinDose Conditioner and Pro-Keratin Renewal Spray, formulas provide cleansing while locking in moisture to help fight frizz. Restore overprocessed hair. 90% more conditioned after one application. Rich, sulfate free lather gently cleanses while maintaining the integrity of over-processed hair Formula with Pro-Keratin and silk provides targeted reinforcement and moisture balance to the hair Hair is shiny and healthy-looking with increased elasticity Free of sulfates, parabens and harsh salts