Stay stocked on your weekly clarifier New technology in a weekly clarifying shampoo to reveal your healthiest hair. Optimize your hair repair results by removing impurities that cause dull, damaged hair. Harsh clarifiers can leave hair feeling dry. Nº.4C is sulfate-free & pH balanced to maintain hydrated hair. Now in a liter-size bottle with a pump. 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