Dreaming of dandruff is a sign of upcoming nagging problem. The dream means you will not be happy with certain new developments in life. It also means even though the problem might be small it will still give you tough times.
Dream of dandruff and you are irritated or disgusted means you will soon come across incidents that might give you a shock. There will be some sickening issues to which you will have no solution.
Dream of dandruff on someone else means you will get into trouble due to the actions of others. It also means you encouraging other people do something silly will cause trouble for you.
Dreaming of dandruff flying around means embarrassing situation or shameful acts.