I swear by this mask for long flights. I put it on before so that it creates a barrier between my skin and the air and locks in hydration during the flight. I don’t know what’s flying around in the air and bacteria so I feel like it protects that exposure and it creates a barrier so that the cabin isn’t taking so much moisture from my face. Since it’s a clear gel I can apply it right before I board in better air. My face is a little shiny when I board but nothing crazy. Then the film starts filming around 10-15 min later. It’s subtle except around the edges. Then afterwards I take it off and my face is so dewy! Airplane hacks