Want to go to Korea for treatment, can I ask what you need to bring for aftercare?

Hi everyone! I'm Nadia from Indonesia, and I'm planning a trip to Korea next month for some small treatments. I've read that aftercare is really important, but I'm still confused about what I should bring from here or buy there.

I'm thinking about things like cooling masks, soothing gels, and scar sheets (if they're available). I'm worried that I'll buy them at a regular pharmacy here and then find they won't suit my skin after the treatment. Has anyone brought these from home, or do they prefer to buy them once they're in Korea?

By the way, I'm also curious: is it better to buy them from a specialty beauty store, or are regular ones okay? My budget is limited, so I want something practical yet effective. Any advice from those with experience? Thanks 🙏