Expertly developed for extremely damaged hair, the L'Oréal Professionnel Serié Expert Absolut Repair Molecular Leave-in Mask works to strengthen and renew the look of brittle, broken strands. The leave-in conditioner reinstates the appearance of elasticity and movement, compromised by damaging chemical treatments. Powered by advanced patented technology, starring Peptides Bonder and five amino acids, the innovative formula breathes life and bounce back into stagnant strands. Lightweight but powerful, the leave-in treatment visibly revitalises damaged-looking lengths while offering antioxidant protection and heat defence up to 230°C. Suitable for all damaged hair textures, the hair is left feeling up to 97% stronger with a radiant-looking shine. Proven Results: Up to 97% more hair strength. Rebuilds hair molecular structure. Heat Protection up to 230°C. When hair is damaged, its molecular structure made up of peptides breaks down. Most peptides, made up of amino acids and peptide binders, are too large to be re-injected, making damage of this magnitude almost irreversible. Scientific discovery, Absolut Repair Molecular. Repairs 2 years of damage in one application. For the first time, L'Oréal Advanced Research has succeeded in breaking down the peptides and reinjecting their components separately into the fibre. Once inside, they reform and rebuild the hair's molecular structure. Absolut Repair Molecular Leave-In Mask is a patented formula, formulated with peptide binder + 5 amino acids. It repairs the macro-molecular structure of the hair which becomes stronger, with improved elasticity and movement. A deep treatment for hair that is instantly soft, shiny, healthy and protected from external damage. A thermo-protective mask that protects hair from heat up to 230°C.