What skincare items did everyone bring for aftercare following beauty procedures in Korea?

Hi, I'm Yui. I'm planning to get a beauty treatment in Korea next month, but I'm unsure about post-care products. I want to prepare for the recovery period in the days following the procedure, but I'm not sure what to bring — cooling sheets, silicone sheets, soothing gel — so I'd really appreciate your advice on what I should pack.

I'm honestly torn between bringing things from Japan or buying them in Korea...😅 Especially cooling masks — are there products I can use right after the procedure? Since it's an overseas trip, my luggage is limited, and I'm also curious about what's easy to find locally.

I imagine the necessary items vary depending on the type of treatment, so I'd love to hear about your experiences. What did you prepare, what actually turned out to be helpful, and what did you barely use? I'd really appreciate hearing your honest thoughts and feedback. Thanks so much!