Olaplex - NO.4C Bond Maintenance Clarifying Shampoo 1000 ml This shampoo effectively removes product residues and impurities, leaving hair fresher and conditioned. It also removes minerals from hard water, chlorine and excess oils, leaving hair and scalp deliciously soft with a renewed feel. Thanks to Olaplex's patented Bond-Building technology, it also helps to strengthen hair and make it more resilient.