I fly. A lot. Work has me crisscrossing the globe and switching time zones, often at a moment's notice, which can leave my skin feeling super dehydrated. One of my favorite things to toss in my carry-on is this AmorePacific treatment oil, which is like a little jet-lag cure in a bottle. Just a few drops are enough to moisturize and brighten the face, so I'll apply at takeoff, and then upon landing. I will also sometimes use this just before bed, because I find that the green tea scent is instantly calming (but not over-powering.) Another huge plus: zero breakouts. The price may be high, but just remember that a little of this oil goes a long way.
AmorePacific Green Tea Seed Treatment Oil, $195; sephora.com