Nourish and repair your hair with Olaplex No. 4 Bond Maintenance Shampoo, a highly moisturizing and reparative formula designed to leave hair soft, shiny, and more resilient with every wash. Powered by patented OLAPLEX Bond Building Technology™, this shampoo works at a molecular level to rebuild broken bonds caused by chemical, thermal, and mechanical damage.
Suitable for all hair types—including color-treated, damaged, or compromised hair—No. 4 helps improve manageability, reduce frizz, and maintain healthy hair structure while delivering a gentle yet effective cleanse.