The Olaplex No.4 Bond Maintenance Shampoo is formulated to repair and strengthen hair from within by relinking broken bonds in the hair structure. It provides advanced cleansing and hydration while actively working to improve hair health and resilience between salon treatments. This daily-use shampoo is ideal for all hair types, especially those that are damaged or chemically treated, helping to maintain your hair's integrity and vibrant look. Integrate it into your routine for visibly healthier, more manageable results.