L’Oréal Professionnel Absolut Repair Molecular Leave-In Serum is a game-changer for damaged hair, offering deep repair while protecting against future damage. Infused with peptides and amino acids, this ultra-lightweight formula penetrates the hair fibre, reinforcing its structure and preventing breakage. It provides heat protection up to 230°C, making it ideal for use before styling. Hair feels stronger, smoother, and more resilient with every application. Perfect for daily use, this leave-in treatment locks in moisture, reduces frizz, and enhances shine without weighing hair down. For best results, use as part of the Absolut Repair Molecular routine.