Flakiness is never attractive, but in hair it's very treatable. Dandruff is caused by excess sebum, or oil, on the scalp. Your scalp is constantly shedding dead skin cells, which normally get washed away. The scalp also hosts a fungus called pityrosporum ovale, which lives in the skin. Normally, the levels of this fungus are too low to do anything. To overcome with this problem, you can choose Hair Sanjeevani’s best shampoo for hair fall and dandruff.