Nioxin Intensive Therapy Follicle Booster with Scalp Respiratory Complex™ is intended for excessively thin-looking hair and low density hair lines. It provides vitamin enriched nourishment onto the scalp and helps create an optimum scalp environment. Protects hair against the phototoxic effects of sunlight and the damaging effects of DHT and psuedo-estrogens. Repairs damage caused by free radicals.