Olaplex No.4 Bond Maintenance Shampoo gently cleanses while repairing and strengthening hair. Formulated with Olaplex's patented Bond-Building technology, it works to restore broken bonds within the hair structure, reducing breakage and improving overall hair health. This sulfate-free shampoo is suitable for all hair types and leaves hair feeling softer, shinier, and more resilient. Use daily as part of your hair care routine for visibly stronger, healthier-looking locks.