[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 fibre, making damage almost irreversible. Helps repair molecular hair damage and restore hair's original strength*. For the first time, L’Oréal's Advanced Research team successfully managed to decompose peptides, to inject their components separately into the fibre**. Once inside, they reform & rebuild the molecular structure of the hair***. [INNOVATIVE TECHNOLOGY] More than surface repair, it is inner molecular repair. This exclusive rinse-off serum, highly concentrated with 2% Peptides bonder + 5 amino acids, rebuilds the hair molecular structure*** to restore its strength, elasticity and movement****. [DEEP PENETRATION] Inspired by ultra-potent skincare serums, it goes beyond regular repair masks and deeply penetrates into the fibre to rebuild its molecular structure*** with no superficial coating. [INSTANT TRANSFORMATION] Instantly, hair is visibly transformed: shine and smoothness are dramatically improved*****. [PROFESSIONAL FORMULA] Its serum-like texture is immediately absorbed into the fibre and provides molecular repair*** with no weigh down. [RECOMMENDED FOR ALL DAMAGED HAIR] For all damaged hair textures, colour-treated, lightened & natural hair. [CO-DEVELOPED WITH REPAIR PROS] This range has been co-developed with 3 repair experts: Adina Pignatare @adina_pignatare from the US Mike Julliard @loungecut from France Barbara Rabelo @barbararabelo_ from Brazil *Instrumental test on rinse off serum. **Amino acids & peptides bonder ***Instrumental test after 15 applications of rinse-off serum ****Consumer test after application of shampoo + rinse-off serum + leave-in mask *****Instrumental test after application of shampoo + rinse-off serum.