Has anyone ever gone for a consultation in Seoul and only spoken English or Vietnamese?

Hi everyone, I'm Oanh from Vietnam. I'm planning to go to Seoul to learn about beauty services, but I'm a little worried about the language barrier. My English is average, and I know almost no Korean. I'd like to ask if anyone has had a consultation there where they spoke English and if it was okay? Or what else should I prepare?

I've heard that many places have English-speaking staff, but I'm not sure if all clinics do. Has anyone experienced this before? Which places should I look for, or what should I prepare beforehand to improve communication? Thanks everyone!