The short answer
Ask for instructions specific to the whitening method you receive. Do not assume that every treatment has the same food restrictions or that one universal waiting time applies to every visitor.
Discuss your plans before treatment
If café visits, a tasting tour or a special meal are priorities, tell the clinic before you choose a treatment date. Ask which guidance matters for your planned method and whether moving the appointment would make your itinerary easier.
Keep the result realistic
Colour can change again over time, and staining habits matter. Discuss your coffee or tea habits without expecting permanent whitening. Ask what maintenance is appropriate for your teeth rather than repeating treatments on your own.
Save your instructions and contact
Before leaving Gongdeok, ask for clear aftercare instructions and keep the clinic contact handy. Tell the team if a reaction bothers you. Do not replace clinical advice with a social-media rule about a fixed number of hours.
Common questions
Is whitening permanent?
No. Discuss maintenance and individual expectations.
Should I follow a fixed internet waiting time?
Follow the instructions for your actual treatment.
Sources & further reading
General information for planning a visit. Your diagnosis and treatment plan require an individual examination.
GONGDEOK · SEOUL
Plan your visit
Yonsei Severance Dental Clinic · Dr. Kang Jun-gu
156 Mapo-daero, Gongdeok Prugio City 2F 217–218
+82 2-3273-7528