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, l'oreal's advanced research team successfully managed to decompose peptides, to inject their components separately into the fibre. Once inside, they reform and rebuild the molecular structure of the hair. Patented technology this patented leave in mask, formulated with peptides bonder 5 amino acid, repairs the hair's macro molecular structure. Hair is stronger with improved elasticity and movement. Professional formula the formula's 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 230?c 450?f. Recommended for all damaged hair for all damaged hair textures, colour treated, lightened and natural hair.