Is English sufficient for consultations in Seoul? Can anyone who has been there guide me?

I'm considering getting some cosmetic procedures done in Seoul, but I'm a bit worried about the communication aspect. I can speak English, but I'm not sure if it's enough to explain in detail what I want, especially the technical parts.

Has anyone who has consulted at clinics in Seoul been able to share their experience? Do they offer good English support, or should I prepare some Korean vocabulary beforehand? Or should I hire a translator? I'm not sure if it's necessary because I've heard many places have English-speaking staff, but the quality varies.

Thank you, everyone! I'm about to book but want to feel reassured about this part first.