Nº4C MAINTENANCE OF THE BONDA SHAMPOO CLARIFICATION OF OLAPLEX. What is | It is an advanced clarifying shampoo, powered by our unique broad spectrum clarifying system, providing a powerful deep clean, removing build-up and impurities, clearing the way to healthier hair. Why you'll love it | Removes hard water minerals, chlorine, excess oil and product buildup. | This exclusive formula does not dry, leaves hair soft, shiny, vibrant and free from residue. Patented formula Olaplex Bond-Building Technology™ to keep hair bonds strong. When and how you will use it | Use weekly as part of a home cleaning routine. Also use before hair repair treatments to optimize performance.