[SCIENTIFIC DISCOVERY - MOLECULAR REPAIR] When hair is damaged, its struttura molecular structure made of peptides is degraded. Damaged hair becomes gummy and loses movement. Most peptides, composed of amino acids and peptide bonds, are too large to be reinjected, making damage of this extent almost irreversible. Scientific discovery, Absolut Repair Molecular. Repairs 2 years of damage in una with just one application*. For the first time, Advanced Research L'Oréal has managed to break down the peptides and reinject their components separately within the fiber**. Una Once inside, they reform and rebuild the struttura molecular structure of the hair***.