What do people bring back for aftercare after a beauty trip to Korea?

Hi everyone, I'm Quynh from Vietnam. I'm planning to go to Korea in a few weeks for some treatments, and I'm worried about aftercare. I intend to bring some products from Vietnam, but I also want to know what to buy there or what to prepare beforehand.

What have you all brought for recovery care? Cooling masks, scar patches, or soothing gels? I've heard these things help in the first week after treatment, but I don't know which ones to choose. Is it necessary to buy them from Korea, or can I use them from home?

If anyone has had this done before, could you share your experience? Especially about which products are really helpful and shouldn't be forgotten. Thank you!