Is English sufficient, everyone? Or do I need to learn Korean before going for a consultation?

I'm Hang from Vietnam, and I'm planning to visit Seoul for a beauty consultation. However, I'm a bit worried because my English is just okay, not fluent. I can manage basic conversations, but I'm concerned about not fully understanding or clearly expressing myself when discussing detailed medical information or personal feelings.

Has anyone here consulted in Seoul using only English? In general, do larger clinics have translators or English-speaking staff? I've heard some places offer support, but I'm unsure how widespread it is. Or should I prepare some basic Korean beforehand?

If anyone has experience, please help me out! I want to feel comfortable and fully understand during my consultation, not be confused due to language barriers.