It is true that hormones play a role in dandruff production: that's why dandruff often appears for the first time at puberty.
One of the key ingredients for dandruff formation is sebum, an oil that your body produces on your scalp, face, and chest. Hormones control sebum production.
Dandruff appears when a natural microbe, Malassezia globosa, breaks down sebum, producing irritants like oleic acid.
If your scalp is sensitive to oleic acid, it may become irritated and its skin cells may start to flake off as dandruff.
More information about the cause of dandruff
That's why the hormones that control the sebaceous glands are an essential component in dandruff production, as they provide the key ingredient that irritates the scalp: oleic acid. Hence, dandruff often appears for the first time at puberty.
But hormones are not the only factor. You also have to be sensitive to oleic acid. About 50% of the population is, so there's a 50% chance you'll experience dandruff at some point in your life.
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