5 Problems. 1 Solution. L'Oreal Paris Total Repair 5 Repairing Serum helps fight against the five visible signs of damaged hair - hair fall, dryness, roughness, dullness and split ends without weighing it down. Damaged hair can lack the natural cement which keeps the hair strong and resilient. To ensure cohesion and strength, the L’Oreal Laboratories have created Ceramide-Cement technology to replicate the hair’s natural cement, targetting the 5 problems. When applied, it instantly attaches itself to damaged areas, repairs and unifies the hair‘s surface, creating a protective shield against further damage and split ends. Explore our best hair products to revive and repair damaged hair