Unveil your healthiest hair yet with the L'Oréal Paris Elvive Bond Repair Leave-In Serum, the powerful fourth and final step in our revolutionary Bond Repair haircare routine. This advanced serum is your ultimate solution for stronger hair, unparalleled shine, and essential heat protection. Hair's strength and structure are built upon millions of delicate bonds. Yet, daily aggressors like brushing, bleaching, heat styling, and environmental exposure can cause these vital bonds to break, leaving your hair weak, dull, and visibly damaged. For the very first time, our innovative formula, infused with a potent Citric Acid Complex, directly targets and repairs these compromised hair bonds. Experience truly transformative results: achieve up to an incredible 12x less split-ends¹, significantly 98% stronger hair², and a radiant boost of 82% more shine². Suitable for all types of damaged hair, this leave-in serum locks in vitality, providing a flawless finish. ¹ Instrumental test after 5 applications of Pre-Shampoo Treatment + Shampoo + Conditioner + Leave-In Serum. ² Instrumental test after application of Serum.