I'm having a short treatment before going abroad. Does anyone know how to reduce swelling?

Hi everyone! I'm from Taiwan and I'm considering getting a short treatment in Korea, but the problem is I have to go back to Taiwan in two weeks after the procedure. I'm a little worried the swelling might worsen on the plane, and I'm also unsure what products to bring back for care.

I'd like to ask if anyone has experience with long-distance travel immediately after a treatment? How long does it take for the swelling to subside noticeably? Also, what kind of products do I usually need to bring—like cooling compresses or repair products? I'm worried about limited luggage space and don't want to buy too many unnecessary things.

Also, are there any special precautions I should take on the plane? I've heard I might need to avoid certain movements or be extra careful with moisturizing? Can anyone share their experiences? It seems like there are quite a few small details to keep in mind. Thank you so much!