Nº.4C BOND MAINTENANCE® CLARIFYING SHAMPOO - The Nº.4C Bond Maintenance® Clarifying Shampoo, infused with patented OLAPLEX Bond Building Technology™ is our exclusive Broad-Spectrum Clarifying System. The Nº.4C Bond Maintenance® Clarifying Shampoo removes damaging impurities from the surface of the hair without stripping or drying. Nº.5 BOND MAINTENANCE® CONDITIONER - This highly concentrated, nourishing conditioner repairs, strengthens, and moisturizes hair prone to damage or dryness. From salon to shower, bestselling Nº.5 leaves hair smoother and more manageable in minutes. Pair with Nº.4 for softer, shinier, healthier-looking hair with every wash. Color safe.