Consultation in Seoul without Korean—English is enough?

Hi friends! I'm Ika from Indonesia, and I'm planning an aesthetic consultation in Seoul next month. My biggest concern is the language barrier—I speak English fairly fluently, but I'm worried about complicated medical details or missing nuances.

Is it actually safe to come to a consultation with just English? Has anyone had this experience? I was wondering if clinics in Seoul usually have English-speaking staff, or do I need to bring a translator? Or maybe there's a good translation app you've tried?

Bonus question: Does anyone know whether it's better to book a consultation online before flying there, or to go in-person? I'm still unsure which strategy is smoother. Thanks so much for your input! 🙏