[SCIENTIFIC DISCOVERY - MOLECULAR REPAIR] 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 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***. [PATENTED TECHNOLOGY] This patented leave-in mask, formulated with Peptides bonder + 5 Amino acid, repairs hair macro-molecular structure*. Hair is stronger with improved elasticity, movement****. [PROFESSIONAL FORMULA] The formula’s lightweight texture instantly penetrates and restores strength. Natural touch. [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, color-treated, lightened & natural hair. *Instrumental test on the fiber macromolecular structure after application of shampoo + rinse-off serum + leave-in mask. **Amino acids & peptides bonder ***Instrumental test after 15 applications of shampoo + rinse-off serum + leave-in mask ****Consumer test after application of shampoo + rinse-off serum + leave-in mask *****Instrumental test ******Analytical test, after application of pre-treatment + 5 shampoos.