Olaplex Pro Scalp Rebalancing ConcentrateA professional only scalp treatment that helps immediately reduce signs of scalp stress caused by everyday factors or by salon services, while reinforcing the scalp barrier, fighting accelerated scalp aging, and promoting an environment for healthy hair. For all hair and scalp types, including sensitive scalps. Maintain your clients scalp health between visits with No. 0. 5 Scalp Longevity Treatment. Dermatologist tested. Trichologist approved.