There are two types of flakes you might see on the scalp: dryness and dandruff, the latter of which calls for targeted shampoos for treatment.
Technically, dandruff is seborrheic dermatitis, a form of eczema, that’s caused by a yeast called Malassezia furfur, board-certified dermatologist Raechele Cochran Gathers, M.D., tells us about the condition. These flares tend to happen for a multitude of reasons (read all about ’em here), but the most common triggers tend to be a change in weather—both cold and humid temperatures—as well as stress.
With a dry scalp, you may see symptoms such as tight skin, itchiness, flakes, ashiness, or redness—some of which overlap with dandruff.
If it’s dryness-induced flakes you see, look for a hydrating scalp serum with ingredients like hyaluronic acid and peptides. Some A+ options include the Ouai Scalp Serum and Innersense Hair Renew Daily Active Serum.