Cosmopolitan: When Your Hair Just Won’t Behave

“A change in weather can cause your scalp to peel,” explains trichologist Lisa Akbari. “In the winter, there’s less humidity in the air, which can dry out your scalp.” If the peeling is persistent and comes with other symptoms… you might have dandruff. In that case, you’ll want to switch to a shampoo made to treat this condition. Most contain zinc or sulphur, which work as antibacterial agents to free follicles of buildup and eliminate flakes in a few weeks, says Akbari.