What do you buy to help you recover after getting beauty treatments in Korea?

Hi everyone! My name is Oanh, and this is my first time going to South Korea for some skin treatments. I'm a little worried about the recovery process because it's a long trip, so I want to prepare thoroughly. Can anyone with experience recommend some good aftercare products?

I'm thinking about buying things like cooling masks, silicone mesh to cover scars (if needed), and soothing gels. I'm not sure which to prioritize, or if I need everything. Many people say that cosmetic shops in Korea have a lot of options, but I don't want to buy just anything without knowing which is truly useful.

Can anyone suggest anything? Do you usually bring your own or buy them locally? I would be very grateful if anyone could share their experience!