Buy a Humidifier
While there is some debate as to whether dry skin is a true cause of dandruff, one thing there is no controversy about is the phenomenon of winter dandruff. If you've ever had dandruff, you know that it tends to worsen during dry, cold-weather months. It's believed that the reduction of humidity in the air (both outdoors and indoors) during winter can add to the buildup of dry skin that occurs with dandruff.
One of the simplest ways to increase your exposure to humidity during winter months is to buy a humidifier. Ideally, you should have a humidifier in all of your main living and working spaces. Just don't let your humidifiers create other health problems. Make sure they're cleaned out frequently and thoroughly dried when they're not in operation -- or else they can breed bacteria and mold.
Keep reading for more easy ways to possibly prevent dandruff.