Smooth Proof Deep Treatment Pack Multi Use Hair Mask - BenefitsSofter HairControls frizzy hairSmooths hairProtects against breakageResearch ResultsUp to 70% less breakage*Immediately hair is 8X smoother****Vs. non-conditioning shampoo with the system of Shampoo and Mask*When used as a system with Biolage shampoo - Smooth Proof Deep Treatment Pack Multi Use Hair Mask