Elvive Total Repair 5 Shampoo contains Pro-Keratin, a combination of 2 amino acids found in Keratin, repairs the hair fibre, leaving the hair structure reinforced and its strength regained. TR5 Repair shampoo also contains Ceramide, a patented compound from L’Oréal Research Laboratories, replicates hair's intercellular cement, transforming the hair's surface to an even and smooth condition.