The Nº.4 Bond Maintenance Shampoo, infused with patented OLAPLEX Bond Building Technology, is a highly concentrated reparative shampoo that hydrates and nourishes hair. WHAT IT IS Formulated with Olaplex Bond Building chemistry. Restores internal strength and moisture levels to add incredible shine and manageability. For all hair types. WHAT IT DOES • Helps protect and restore damaged hair by repairing disulfide bonds broken during chemical processing. • Non- drying, gentle on color treated and chemically processed hair and scalp. • Leaves hair feeling amazingly clean and bouncy. • Moisturizes and hydrates thirsty, dry hair. • Provides moisture and shine which results in radiant-looking and luxurious-feeling hair. You may also like OLAPLEX - NO. 2 BOND PERFECTOR 67.62 OZ OLAPLEX - NO. 5 BOND MAINTENANCE CONDITIONER OLAPLEX - NO. 0 INTENSIVE BOND BUILDING TREATMENT 5.2 OZ