Introducing the New Matrix Biolage Advanced KeratinDose line that targets overprocessed hair, whether it be from colour, bleach, relaxers, texturizers, keratin straightening or any other chemical services. KeratinDose contains Pro-Keratin, an essential protein for building strength in your hair. The combination of Pro-Keratin with silk amino acids leaves hair soft and silky, yet strong and healthy. Keratindose Conditioner restores essential moisture to your hair, whilst preventing any further moisture loss. This keeps hair soft and healthy.