Going to Seoul for the first time! Does anyone have recommendations for must-try skincare experiences?

Long time no see! I'm looking forward to going to Seoul next month and I'm so excited 🤩 I've been many times, but this time I want to focus on skincare and beauty because my skin is really damaged...

I wanted to ask if anyone has been and tried anything they really liked? I'm interested in trying local skincare experiences, like visiting small, locally popular skincare centers, or are there any places you recommend for a great massage or facial? I'm not looking for anything extreme, I just want to feel like I'm doing something good for my skin 😅

Also, when it comes to Korean skincare, is it true that those products have good ingredients, or is it just hype? I'd love some advice from people who understand this well. Thanks in advance!