Dandruff is a flake composed of dead cells from your scalp. Maybe we should rewind a bit before getting to what dandruff is. First you need to know that your scalp’s skin is constanly renewing itself. Dead cells fall off while new ones form underneath. When this process is accelerated, more dead cells start to appear and they group themselves and form “flakes”. These flakes are visibile by the naked eye and those flakes is what dandruff is.Do not dispear if you have it. Most people have had it or will have it at least once in their lifetime. What to do against it? Well, the simplest way would be to go to the drugstore and buy an anti-dandruff shampoo. There should be at least a couple different types on the shelves.What causes drandruff? Well, that’s a topic we’ll cover later on.