Question! What's the best area in Seoul for beauty tourism, and where should I stay? 🧴

Hello everyone! My name is Beam, and I'm planning a trip to Seoul to explore some beauty treatments. I'm currently a bit confused about the best area to stay. I've heard that Gangnam and Apgujeong have tons of beauty shops, but I'm not sure what the actual differences are between the areas.

Has anyone been before? Where did you stay? Was it convenient for walking around? Which area is more affordable, and are there any other cool things to do? I'm looking for decent accommodation at a normal price, preferably close to shops or points of interest.

If you have any experience, I'd love to get recommendations from fellow international travelers like myself! Thanks in advance! 💕