Product Overview Brittle, very damaged hair deserves extra care & attention – our secret is to treat it with Kérastase's first reconstructing mask, featuring Ciment-Cylane 3 Complex to help repair hair & replenish split ends. Benefits Damaged hair looks healthier, bouncier, & is softer to the touch. This formula is designed to ensure the hair fibre is replenished, & hair feels intensely stronger. Key Technology Ciment-Cylane 3 Complex contains a unique combination of 3 exclusive active ingredients which go further in hair repair: Intra-Cylane, Pro-Keratine & Ceramides.