Nioxin System 1 Cleanser ( formerly Bionutrient Actives Cleanser) is a detoxifying cleanser for fine or thin-looking, non-chemically enhanced hair. Formulated with a concentrated blend of botanicals and humectants, it creates an optimum scalp environment, by gently removing product build up, minerals, environmental pollutants and toxins like DHT (Dihydrotestosterone) from the hair and scalp, clearing nutrient pathways to the scalp and hair follicle sites without stripping hair of essential oils.