Add in age-related hormone changes, holiday stress, and arid furnace heat — and you have an all-too-potent recipe for dry, itchy scalp. This condition can cause many problems ranging from irritation and discomfort to damaged strands and hair fall. So what can you do? Thankfully, there are steps you can take to rehydrate your scalp and revitalize your dry, brittle locks in the process. Read on to discover how to treat scalp dryness in winter.