Biolage Keratin Dose Hair Conditioner Damaged, over-processed and unconditioned hair can feel brittle, lacking manageability and shine. Formulated with Pro-Keratin and Silk, our KeratinDose Conditioner provides targeted reinforcement for over-processed, weak or fragile hair. When combined with the KeratinDose Shampoo and Pro-Keratin Renewal Spray, formulas provide nourishment and cleansing while balancing moisture for over-processed hair. Restore overprocessed hair. 90% more conditioned after one application. Paraben free conditioner moisturizes and smoothes overprossed hair Formula nourishes hair and prevents damage Hair is left silky with manageability