What did you bring with you for aftercare following cosmetic treatments in Korea?

Hi, this is Misaki. I'm planning to get cosmetic treatment in Korea next month, and I'm wondering what post-treatment care products to bring. I'm especially interested in things like cooling masks, soothing gels, and silicone sheets, since I'll be having a procedure that requires downtime.

What kind of aftercare products did you actually use after cosmetic treatments in Korea? Should I buy them there or bring them from Japan? I'd especially like to know which cooling masks are effective, as I'll probably be using them multiple times. Also, there seem to be many different types of soothing gels; I'd appreciate it if you could tell me about any that are suitable for sensitive skin and what your experience was like using them.

Furthermore, if there's anything you paid particular attention to during the few days before returning home, please let me know. This is my first beauty trip to Korea, so I want to be well-prepared!