[SCIENTIFIC DISCOVERY - MOLECULAR REPAIR] When hair is damaged, its molecular structure, composed of peptides, is compromised. But most peptides are too big to be reinjected into the fiber, making damage almost irreversible. Scientific discovery - Absolut Repair Molecular. Repair 2 years of damage in one use*. For the first time, L'Oréal Advanced Research achieved to decompose peptides, to inject their components separately into the fiber**. Once inside, they reform & rebuild the molecular structure of the hair***.