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But don’t confuse it with dandruff.
Dandruff is usually caused by a tiny yeast-like microorganism that grows on oily areas of the scalp. When the scalp’s natural protection becomes weak and unhealthy, the microorganism can produce irritants which cause the skin cells to shed faster than usual, leaving white flakes. A dry scalp is down to the scalp losing too much of its natural moisture. This can be due to things like cold weather, a build-up of hair products or even dehydration. It doesn’t always lead to dandruff, but it can cause flakes, too (though they’re much smaller and fall away more easily)