Matrix Biolage Keratin Dose Shampoo 13.5 Ounce 400 Milliliters Matrix Biolage Advanced Keratindose Shampoo is developed with pro keratin and silk to repair brittle, over-processed hair. This shampoo is formulated to gently cleanse and take care of weak, over-processed, or fragile hair. Maintains the integrity of over-processed hair and keeps your hair looking shiny and healthier. Free of harsh salts, parabens, and sulfates.