How can foreigners find reliable clinics in Korea?

Hello everyone, I'm Xia. I've been thinking about getting some skin treatments in Korea recently, but as a foreigner, I really don't know how to find a reliable clinic. I'm worried about communication issues and don't know what to look for to determine if a clinic is legitimate.

I'd like to ask everyone, how do you find clinics? Do you rely on friend recommendations, or are there any trustworthy channels? Also, what should I pay attention to during consultations? I'm particularly interested in questions about translation or English consultations – do clinics usually have English-speaking staff? Or do I need to arrange my own translator?

Additionally, are there any questions that are essential to ask during a consultation? For example, about the doctor's qualifications, the clinic's licenses, etc.? I want to be as cautious as possible. Has anyone had experience they can share? Thank you!