Frequently Asked Questions about Nizoral Shampoo™ Home | Contact | Sitemap | Janssen-Cilag websites There are so many hair products on the market that it has not been possible to test each hair product with Nizoral™ Shampoo. Nizoral™ Shampoo should be used as directed in the Patient Information Leaflet. If you need to use the shampoo more often, you can use your usual shampoo as well. If necessary you can use your usual shampoo and then Nizoral™ Shampoo afterwards.If you are using or are considering using any hair products or treatments other than your usual shampoo, you should speak to your doctor or pharmacist.