When hair is damaged, its molecular structure, composed of peptides, is compromised. Hair breaks, becomes elastic, with no movement. But most peptides are too big to be reinjected into the fibre, making damage almost irreversible. Scientific discovery – Absolut Repair Molecular. Up to 97% more hair strength*. For the first time, L’Oréal Advanced Research achieved to decompose peptides, to inject their components separately into the fibre**. Once inside, they reform & rebuild the molecular structure of the hair***.