OLAPLEX® NO.4 FINE BOND MAINTENANCE™ SHAMPOO 250MLOlaplex No. 4 Fine Hair Shampoo is specially formulated to gently cleanse while strengthening and protecting delicate strands. It removes build up to add volume and lift at the roots, while clinically proven technology repairs existing damage and helps prevent future breakage. Lightweight yet powerful, it leaves fine hair feeling healthy, resilient, and full of body without weighing it down.