Olaplex 4c Clarifying shampooOlaplex 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