This is the secret to a long-lasting hair extension install. Clarifying the hair and scalp with a proper clarifying shampoo is essential before any installation. Perfect Locks Clarifying Shampoo contains the perfect combination of botanicals that work together to remove the build-up of hairspray, mousses, gels, styling paste & oils that build up over time, causing your hair to appear dull, heavy, greasy, and limp. Give your hair a fresh start and restore manageability and shine. Paraben-free. Contains 8 fluid ounces.