Nioxin System 3 Scalp Treatment is a natural leave-in conditioning treatment that addresses problems associated with noticeably thin-looking hair by protecting scalp and hair from damaging chemical residue, environmental toxins and product build-up. Creates an optimum scalp environment with vitamin-enhanced microcirculation, for fuller, thicker, healthier-looking hair. Nioxin products are made with the most technologically advanced discoveries and with select natural ingredients