Please provide advice on managing swelling and products after a petit procedure.

Hi, my name is Dao, and I'm planning a trip to Korea for a small petit procedure. However, I have a few concerns because I'll be traveling somewhere afterward. I'd like to know how much swelling I'll experience after this and how I should take care of myself during the flight.

This is my first time doing this, so what products should I pack? Has anyone ever bought skincare products or cold compresses back from Korea? How can I cool my skin down on the plane? How many days should I rest before continuing my journey? Or is the swelling not actually that bad? I'd appreciate any advice from those who have done this before.