Most people misdiagnose dandruff as a ‘dry scalp’. In fact, the opposite is often true: it’s an oily scalp that’s causing the unsightly white flakes. A truly dry scalp is actually quite rare!
Dandruff doesn't always come with visual evidence either. Some suffers might not notice the telltale white flakes, but complain about an itchy scalp instead. They should resist the temptation to scratch their scalp as it will irritate the skin and provoke a snowstorm on your shoulders.