For anyone nervous about the language barrier while going through something as personal as this it really isn’t an issue in Gangnam. Pretty much every clinic that deals with international patients has English speaking staff or coordinators who handle everything from your first online inquiry through to your aftercare follow ups. Some clinics provide English-language services from consultation to aftercare, removing language barriers from the treatment experience, with English-speaking practitioners or translators provided throughout. A woman in my travel group said she felt more informed and communicated with at her Gangnam clinic than she ever had at any medical appointment back home.
There are many clinics in Gangnam offering thread lifts, but experienced practitioners who focus on lifting without over tightening are usually preferred for safety and aesthetics.