Post-cosmetic treatment care products – what did everyone bring?

Hi everyone! I'm going to Korea soon for a minor beauty treatment, and I'm currently struggling with post-treatment care products. I've heard the first few days after the procedure are especially important, so I want to prepare some things in advance.

I'm wondering if I should bring some cooling face masks, silicone scar patches, and soothing gel from China? My main concern is whether I'll be able to easily buy my preferred products in Korea, and I'm also worried about the inconvenience of traveling around after the procedure. Have any of you ladies stocked up on these kinds of things specifically for beauty trips? What brands or types of products did you bring? Did they really help?

Also, I'd like to ask if I need to stock up on these things in advance? Or is it okay to buy them locally? I'm a little nervous, haha, I'd love to hear your experiences!