Color Last Deep Treatment Pack Multi Use Hair Mask - CLRLST DP TRTMT PCK MLT S HR MSK 3.4OZBenefitsMaintains and restores all types of color-treated hairShiny and vibrant resultsLight, easy to squeeze packagingAt least four applications per packResearch ResultsHair is 3X stronger*Up to 70% less breakage***Vs. non-conditioning shampoo with the system of Shampoo and Mask**When used as a system with Biolage shampoo - Color Last Deep Treatment Pack Multi Use Hair Mask Biolage Color Last Deep Treatment Pack Multi Use Hair Mask