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. Scientific discovery Absolut Repair Molecular. Up to 97% more hair strength.For the first time, LOralu0027s Advanced Research team successfully managed to decompose peptides, to inject their components separately into the fibre**. Once inside, they reform u0026 rebuild the molecular structure of the hair***. [PATENTED TECHNOLOGY] This patented leave-in mask, formulated with Peptides bonder + 5 Amino acid, repairs the hairu0027s macro-molecular structure*. Hair is stronger with improved elasticity and movement. [PROFESSIONAL FORMULA] The formulas lightweight texture instantly penetrates and restores strength. Hair has a natural feel.[INSTANT TRANSFORMATION] Hair is instantly smooth, shiny, healthy-looking and protected against external aggressions. [HEAT PROTECTION] Heat protection up to 230C/450F. [RECOMMENDED FOR ALL DAMAGED HAIR] For all damaged hair textures, colour-treated, lightened u0026 natural hair.