Hydrate your skin from within by drinking plenty of water even during colder months. Though, in Fall you can actually turn to a herbal tea instead of plain water to provide your skin with a healthy glow.
Note: Herbal tea does not contain any caffeine. To be completely accurate, it is not actually tea but rather an infusion or blend of various herbs. It is made from plants, flowers, herbs and fruits to infuse flavor, and often health benefits, into a decaffeinated drink.