The Olaplex Bond Maintenance Conditioner No.5 is formulated to dramatically improve hair structure, restoring strength and integrity.* This highly concentrated professional conditioner works to repair and strengthen damaged hair bonds from within. It provides intense moisture, leaving hair manageable, shiny, and healthy-looking without weighing it down. Ideal for daily use following the utilization of the Olaplex No. 4 Bond Maintenance Shampoo.