By the way, Merriam Webster lists "dandruffy" as an adjective, so in theory you could say "he's getting dandruffy". But this brings up an interesting question: is everything you see in a dictionary actually in use? The answer is no, so there's no way to know if a certain word is fine unless you have actually seen it at least a couple of times before. This means that even though dandruffy is proba
When you see the flakes on someone's shirt, you know he has dandruff. I've never in my life heard a discussion about the process of getting to that point.
You do say "he's getting gray" or "he's going gray" as a person's hair turns gray gradually over months.
It may be that haircare professionals indulge in such conversations; but like GG, I've never discussed the process itself. You either have dandruff, or you don't; and in the former case, you tend only to mention terrible/bad dandruff.
(I don't think I've ever called someone "dandruffy", either.)
I gather by the way that Eskimos have over 200 words to describe "dandruff".