Nizoral shampoo contains the active ingredient ketoconazole, which is a type of medicine called an antifungal. It is used to treat skin infections with fungi and yeasts.
Ketoconazole kills fungi and yeasts by interfering with their cell membranes. It works by stopping the fungi from producing a substance called ergosterol, which is an essential component of fungal cell membranes. The disruption in production of ergosterol disrupts the fungal cell membrane, causing holes to appear in it.
Ketoconazole is used to prevent and treat a number of different types of fungal and yeast infections. Ketoconazole shampoo is used to treat skin conditions that are caused by infection with the yeast Pityrosporum, also known as Malassezia. These include the skin infection pityriasis versicolor, as well as seborrhoeic dermatitis and dandruff, which is considered to be a mild form of seborrhoeic dermatitis.
Like other shampoos, Nizoral shampoo also contains ingredients to clean your hair.