If you’re hopping on a plane soon to a sunny destination, then you’re going to want to arrive looking youthful, Dewey, and without the dreaded flight face. Flight face is largely a TikTok and Instagram term that has been adopted by the skincare industry to describe the post-flight state of your skin. Thankfully, there are a few steps you can take to offset the damage. How is flight face caused?The issues with in-flight skin health come largely thanks to the altitude of the plane and the dramatic air humidity. “At 30,000 feet, humidity in an aircraft cabin drops to around 20%, while the humidit…