Nizoral 2% Shampoo - Summary of Product Characteristics (SmPC) by Janssen-Cilag Ltd Five facts you should know about one of the key ingredients in dandruff-fighting shampoos. People who suffer from itchy, flakey scalps have many options in the haircare aisle. NIZORAL® A-D Ketoconazole 1% Shampoo, when used twice a week, helps to control scaling, itching, flaking scap to reveal dandruff-free, healthy hair. Learn about Nizoral (Ketoconazole) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Along with its needed effects, ketoconazole topical (the active ingredient contained in Nizoral Shampoo) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. When we are wading through the hair jungle, the most common problem we run into as women are the ingredients to a shampoo. What do they mean? Often we have to rely on television ads and magazine ads to tell us the truth about what this product will do to our hair. Have you been looking for a strong antifungal shampoo for your hair? Has the fungal infection of your scalp been bothering you a lot lately? Then it is time you bought the Nizoral Shampoo for your hair. NIZORAL ® (ketoconazole) 2% Shampoo is a red-orange liquid for topical application, containing the broad spectrum synthetic antifungal agent ketoconazole in a concentration of 2% in an aqueous suspension. Nizoral. Designed to treat Seborrheic Dermatitis. Nizoral is probably the most effective shampoo on the market to control dandruff caused by seb derm. Nizoral shampoo is commonly used to treat dandruff and other skin infections. However, recently, there are evidences from various studies indicating that Nizoral shampoo can actually stop hair loss and even promote hair regrowth.