As the air becomes cooler in the fall, you might find yourself thinking about apples, pumpkin spice, and cozy sweaters. But there's something else to add to your list: taking care of your skin. One big change between summer and fall is the drop in humidity. Dr. S. Tyler Hollmig, a skin expert, says this can lead to more skin problems like eczema and irritation during the fall and winter. Because of this, even if you didn't use moisturizer in the summer, you might need to star