Nioxin's hair-care products and systems are advertised as helping improve the appearance of thinning hair. However, they do not advertise or claim that their products actually cause hair to re-grow. The only known treatments that can cause thinning hair to re-grow are topical minoxidil and prescription antiandrogen medications.
Nioxin has eight different hair-care systems, each designed for a different type of hair. Each system is intended to make the hair look thicker and healthier. The most common cause of thinning hair and hair loss in both men and women is an inherited condition triggered by exposure to sex hormones. In men, hair is lost in a characteristic tonsure pattern called male-pattern baldness. In women, hair thins out with time.