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. - Nº.4C Bond Maintenance Clarifying Shampoo deep cleanses for vibrant color clarity and soft, shiny hair. - Nº.4C Bond Maintenance Clarifying Shampoo protects hair by removing heavy metals, minerals, chlorine, pollutants, and product buildup and thereby allows for optimal performance of your hair repair routine. - Nº.4C Bond Maintenance Clarifying Shampoo is non-stripping and non-drying. - Nº.4C Bond Maintenance Clarifying Shampoo is Sulfate free and Ph Balanced to maintain hydration.