Nizoral is medically proven to be effective against P. ovale, the organism, which most skin specialists agree, is the cause of dandruff. Most other anti-dandruff shampoos work by normalizing the pH of the scalp. That is, they try and modify the environment, which allows the fungi to survive. A more effective option is to eradicate the causative organism directly by using an anti-fungal agent like Nizoral Anti-Dandruff Shampoo. Nizoral Anti-Dandruff Shampoo is unique in that it's effect is long-lasting. Even after rinsing, Nizoral Anti-Dandruff Shampoo carries on working for several days. This means that you don't need to use Nizoral every day making it extremely cost-effective. And unlike some other anti-dandruff treatments, Nizoral shampoo has a pleasant fragrance and is pH balanced leaving hair soft, healthy and clean. NIZORAL is also the most well studied anti-dandruff shampoo, making NIZORAL the scientific answer in the treatment of dandruff with over a decade of clinical experience. In fact Nizoral Anti-Dandruff Shampoo is the number one choice of doctors and pharmacists, who have recommended NIZORAL to millions of dandruff sufferers all over the world. As dandruff is not always limited strictly to the scalp, Nizoral Anti-Dandruff Shampoo is also available as a cream, which is especially useful for treating dry, flaky skin and seborrhoeic dermatitis around the eyebrows, in the beard, and in the folds around the nose.