Question for foreigners: How do I find a trustworthy Korean clinic?

Hello, my name is Aon, and I'm planning a trip to Korea for beauty treatments. I'm not sure how to find a good and trustworthy clinic yet. Has anyone tried it before? What should I check before booking a consultation?

What I'm most concerned about is communication, as beauty and body treatments require very clear opinions. Which clinics have Thai or good English interpreters? Or do I need to arrange one myself? And during the consultation, what should I ask to be confident that the doctor truly knows their stuff?

Also, does anyone know how to check a clinic's history or license? I don't want to buy a pig in a poke 😅. Please recommend how to find information and take care of myself from the very beginning.