Olaplex No. 4 Bond Maintenance Shampoo is a highly nourishing and reparative shampoo designed to repair and protect hair from everyday stresses. Formulated with Olaplex's patented Bond Building Technology, this shampoo restores internal strength and moisture levels to add incredible shine and manageability. It works to repair broken bonds, reduce frizz, and maintain healthier hair with each use. Suitable for all hair types, Olaplex No. 4 Bond Maintenance Shampoo is perfect for daily use to achieve smooth, shiny, and strong hair.