An expert weighs in on how to prevent dryness, dullness, and puffiness after flying. A woman in a spa getting a facial. Credit: Vesnaandjic/Getty Images There’s a dizzying amount of planning and preening before jetting off on a getaway, but the one area that often gets neglected prior to air travel is skin preparation. Ever heard of "flight face"? You know the dreaded look: dry, dull, and puffy—the post-flight aftermath of a long trip or a red-eye route. Flight face can be especially frustrating if you’re headed to a destination wedding or traveling for a special occasion where you want to be your best dewy and hydrated self right off the plane. New York City-based esthetician Danielle Gamble of Danielle Gamble Skin  told Travel + Leisure that flight face occurs due to the low humidity and recycled air in the cabin. “The longer the flight, the more your complexion is zapped of hydration, which leads to breakouts, dullness, and uncomfortable tightness,” she noted.…