Designed with finer strands in mind, the Olaplex No.4 Fine Bond Maintenance Shampoo offers a considered approach to haircare with its lightweight, softening formula. The high-performance cleanser builds a rich lather to lift away impurities and excess oil, while helping hair appear fuller, stronger and more voluminous. Infused with the brand’s signature Bond Building Technology™, the shampoo delivers weightless hydration and a silky-soft finish, ideal for delicate textures in need of visible strength and shine.