Color Last Deep Treatment Pack Multi Use Hair Mask - BenefitsShiny and vibrant resultsAt least four applications per packMaintains and restores all types of color-treated hairLight, easy to squeeze packagingResearch ResultsUp to 70% less breakage***Vs. non-conditioning shampoo with the system of Shampoo and MaskHair is 3X stronger***When used as a system with Biolage shampoo - Color Last Deep Treatment Pack Multi Use Hair Mask