Olaplex No.4C Bond Maintenance Clarifying Shampoo is a weekly, deep cleansing shampoo formulated with a broad-spectrum clarifying system to remove all classes of damaging impurities without stripping hair. Purified hair looks and feels healthier and receives reparative treatments more effectively for an optimized hair repair routine to repair, strengthen and protect. This advanced, broad-spectrum clarifying system removes more than just hard water minerals, buildup, and oil. It pulls a wider array of impurities out of the hair including heavy metals, chlorine, and pollutants. It deep cleans without stripping leaving hair touchably soft, never dry or straw-like. It is formulated with patented Olaplex Bond Building Technology to maintain strong hair bonds as the clarifying system removes damaging impurities.