[Scientific Discovery - Molecular Repair] When hair is damaged, its struttura molecular structure made of peptides degrades. Damaged hair becomes gummy and loses movement. Most peptides, made up of amino acids and peptide bonds, are too large to be re-injected, causing damage from this size that is almost irreversible. Scientific discovery, absolute molecular repair. Repairs 2 years of damage in one application*. For the first time, advanced research L'Oréal has succeeded in breaking down peptides, to re-inject their components separately within the fiber **. Una once inside, they reform and rebuild the struttura molecular structure of the hair ***.