Olaplex No.4 Maintenance Shampoo is a restorative shampoo designed for all hair types to cleanse, hydrate, and strengthen damaged strands. Formulated with Olaplex’s patented bond-building technology, it works to repair broken bonds, smooth frizz, and improve hair elasticity while enhancing shine and manageability. Lightweight yet deeply nourishing, it leaves hair soft, healthy-looking, and resilient without weighing it down. The shampoo helps protect hair from daily stressors such as heat styling, chemical treatments, and environmental damage while maintaining hair’s natural vibrancy. Ideal for anyone seeking stronger, smoother, and more manageable hair, it creates the perfect foundation for a complete haircare routine.