Botox for Square Jaw: What Dr. Wontak Choi Explains 2015.06.29

Published 2015.06.29 · Updated 2026.11.06

Botox for Square Jaw and V-Line Contouring: What to Expect, According to Dr. Wontak Choi

Summer vacation and school holidays bring a rise in questions about aesthetic procedures, and Botox for an overdeveloped jaw muscle is one of the most common. Dr. Wontak Choi, representative director of Yaan Clinic in Gangnam, Seoul, explained how the treatment works in an interview carried by the Korean outlet City Journal. The report describes him as a Seoul National University graduate with more than 10,000 procedures behind him and lecturing experience at Seoul National University Hospital.

All treatments at Yaan Clinic are performed by a skilled, specialized medical team, delivering standardized, high-quality care based on the clinic's own proven clinical protocols.

How the treatment works

According to the interview, Botox for the jaw is a short procedure with a clear timeline:

• The product is injected into the chewing muscle (masseter) at three to four points.
• About three days later the muscle, which feels hard when the molars are clenched, begins to feel soft.
• The face gradually looks smaller over the following one to three weeks.
• The effect usually lasts six months to a year, depending on how developed the muscle is.

To help the result last, the report advises patients to avoid frequently eating hard food and repeatedly chewing gum.

Compared with jaw surgery

The report contrasts Botox with surgery that shaves the jawbone, which can leave the face badly swollen for two weeks to a month and keep patients away from daily activities. Botox involves no incision, so it leaves no scar and no visible trace of treatment.

Dr. Choi added that because Botox is a drug-based treatment, patients should ask which product is used, whether it is genuine, and how much experience the treating doctor has. He noted that non-surgical injections of this kind carry limited aftereffects and little concern about swelling or pain.

Yaan Clinic, Gangnam, Seoul

Operating Hours

• Mon / Fri: 10:00 am – 9:00 pm (Evening hours)
• Tue / Wed / Thu: 10:00 am – 7:00 pm
• Sat: 10:00 am – 4:00 pm
• Sun / Public Holidays: Closed
• Lunch Break: 1:00 pm – 2:00 pm

Appointment Inquiries

• Phone: +82 10 5308 0499
• Address: 5, Deokbong Building, 82-gil Bongeunsa-ro, Gangnam-gu, Seoul
• Email: yaan09@naver.com