Its very difficult to say if there is a cure for dandruff or not! Certainly, there is no known cure in Allopathy for dandruff. But, dandruff has a cure in Ayurveda.
I am an MBBS doctor abd have started practicing alternate medicines in past 10 yrs. I formulated a shampoo for myself (cos i suffered from dandruff badly), and shared it with friends and the shampoo has been tested succesfully by more than 4000 users.