Booking a red-eye flight always seems like a good idea (have to maximize vacation time, right?)-until we see those dark undereye shadows peering back at us in the airplane's bathroom mirror. That's when this small-but-mighty bottle of serum comes to our rescue. A few drops massaged into the delicate eye area refreshes skin and minimizes puffiness and dark circles. By the time the plane lands, we're feeling bright-eyed and ready to take on the day (with the help from our friend espresso, of course).