Girls, I'm finally going to Seoul! Please recommend some must-do K-beauty experiences!

Sisters, I'm so excited! My long-awaited K-beauty trip to Seoul is finally happening! I'm leaving next month, and I'm so excited to finally experience all the treatments and skincare products everyone's been talking about!

I mainly want to ask if there's a region that's generally considered a "medical beauty paradise"? I'm not looking for anything too fancy, just some basic skincare, like the popular hyaluronic acid injections or gentle laser treatments. Any recommended routes or experience sharing? I'm not entirely sure about my budget yet, but I'd like to know which reputable places people usually choose.

And skincare products! I'm going to do some serious shopping. Besides the brands that are popular in China, do you sisters have any recommendations for must-buy products in Korea, or some niche but amazing gems? Masks, serums, creams—anything is fine! I'd prefer products that aren't easy to find in China, or that offer great value for money in Korea. I feel like this is a rare opportunity, and I don't want to miss out on anything good!

It's my first time going there, and I'm a little nervous but super excited! Any advice or experience you can share is welcome, thanks in advance!