Finally going to Seoul! Can anyone recommend must-try beauty experiences?

OMG, I'm so excited! I'm finally going to Seoul next month and have always wanted to experience the K-beauty atmosphere firsthand. I've used quite a few K-beauty products in Taiwan, but I've heard that trying them out and experiencing them locally is a whole different story. I was thinking of arranging a medical aesthetics consultation or a skincare treatment to feel the extent of Koreans' dedication to skincare.

I mainly want to ask everyone, what are some must-try skincare experiences or beauty treatments if you go to Seoul? For example, are there any popular clinic areas, or any special skincare treatments? My skin type is quite sensitive, so I'd also love to hear if anyone has had similar experiences and what the results were like.

I don't have a very specific budget in mind yet; I'd like to understand the general options first. If anyone has recently visited or lives in Seoul, could you share your experiences and recommendations? Especially for those beauty areas that are really worth exploring! Thanks everyone!