What aftercare products should I buy for a K-beauty trip?

Hi! I'm planning a trip to Korea for a beauty treatment and I'm currently thinking about what aftercare items I should buy to use from the first day of recovery, because I want to take the best care of myself.

Since treatments mean my skin will need a lot of care, I'd like to know what kind of cooling masks, silicone scar sheets, or soothing gels are suitable for the post-treatment period? Has anyone tried buying these at home? Or should I look for locally available products?

Some people have suggested buying specific or special products, but I'm really unsure about many things, so I'd love some advice from those who have had similar experiences! Thank you in advance 🤍