First time visiting Seoul! I'd like to try K-beauty treatments, are there any must-dos?

Hey everyone! I'm Fang, and I'm so excited to finally be going to Seoul next month! I've been following K Beauty on Xiaohongshu (Little Red Book) and it seems like Korean skincare philosophies and products are really different. I want to take this opportunity to experience it for myself.

Do any of you ladies have any suggestions? Like, getting a skin treatment there, or trying out their popular skincare routines? My skin is sensitive combination type, and it gets red easily. I'm wondering what preparations I should make before going, and whether I'll experience any issues with the change in environment?

Also, I've heard that Seoul has many beauty-related areas and streets, but I have absolutely no idea how to find a reliable place. Has anyone been there and could share their experience? I'm not looking for anything fancy, just to try out their daily skincare services and experience a different beauty culture. I'm especially curious how everyone found the right place for them!