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 application1. For the first time, L'Oréal Advanced Research has succeeded in breaking down the peptides and reinjecting their components separately into the fibre2. Once inside, they reform and rebuild the hair's molecular structure3. 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 hair1 which becomes stronger, with improved elasticity and movement4. 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°C5. 1Instrumental test on the macro-molecular structure of the f