Dandruff occurs when the production of new cells on your scalp is accelerated by a certain fungus. Care Derma Exfoliate Shampoo helps rebalance the natural function of your scalp and the fungi. And no worries: where some anti-dandruff shampoos can be harsh, this one is gentle on your hair The substance octopirox fights the fungus that causes dandruff flakes. As a result, you get less itching and the dandruff you see disappears. Good riddance!