Nioxin System 3 Sclp Treatment (formerly Bionutrient Protectives 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 DHT (Dihydrotestosterone) build-up. Creates an optimum scalp environment with vitamin-enhanced microcirculation, nourishing the scalp for fuller, thicker, healthier-looking hair.