OLAPLEX No 4 Bond Maintenance Shampoo 250ML is a specialized cleanser engineered to preserve and protect chemically treated hair while maintaining bond integrity. This professional-grade formula gently removes impurities without compromising the structural repairs achieved through OLAPLEX treatments. The advanced technology strengthens weakened bonds while delivering nourishment and moisture. The 250ML size provides extended cleansing benefits for regular maintenance. Ideal for those with color-treated, bleached, or chemically processed hair, this shampoo extends treatment longevity, reduces breakage, and maintains hair health between professional treatments, delivering salon-quality results with improved strength and resilience.