Avoid wearing mascara while traveling. Even snoozing on short flights, I always seem to find mascara under my eyes. Instead, put it one once you arrive at your destination. The same goes for eye shadows. I love bareVitamins Prime Time Eyelid Primer available at Sephora. This primer holds eye shadow in place all day with no creases. When I do not have the primer with me, I skip the eye shadow until after my flight.