About to fly to Seoul for the first time - does anyone have any skincare tips or beauty spots worth visiting?

Hey everyone! I'm Loan, from Vietnam. I'm heading to Seoul next month and I'm super excited 😄 This time, I plan to check out popular K-beauty skincare products and possibly try some services at beauty/skincare specialty places. My skin is currently a bit acne-prone and has dry patches, so I want to learn about Korean skincare routines and how they take care of their skin.

I wanted to ask if anyone has been to Seoul and tried any skincare products or services that they really loved? I'm not sure where to start, especially since I'll be traveling alone. Should I focus on buying skincare products or try experiences at famous beauty spots? I'm also unsure about a reasonable budget for this kind of trip.

Does anyone have any experience or tips to share? I'm particularly interested in knowing what the atmosphere is like in these areas, if they are welcoming to international visitors, and what I should prepare before going. Thanks so much, everyone! 🥰