Reveal your healthiest hair. What makes healthy hair dull, discolored, dry, unmanageable, or oily? Buildup. Nº.4C Bond Maintenance® Clarifying Shampoo features new technology to reveal your healthiest hair. Optimize your hair repair results by removing more impurities that damage hair. Harsh clarifiers can leave hair like straw. Nº.4C is sulfate-free & pH balanced to maintain hydrated hair. With a Broad Spectrum Clarifying System and scientifically proven OLAPLEX Bond Building Technology™. Visible Hair Benefits • Airy volume & softness • Restored shine • Vibrant color clarity • Deeply clean scalp