Skin concern · Contour

Is my square jaw muscle or bone?

A square lower face is often due to a strong masseter muscle, but bone shape also matters. We check muscle size when clenching and relaxed.
Jaw contour consultation at STON Clinic

✓ Doctor consultation first
Every plan is decided with a STON doctor

✓ Inside Lotte Hotel Seoul, 9F
Underground from Euljiro 1-ga Station

✓ Open 7 days
Weekdays to 20:30, weekends to 17:00

At a glance

  • Concern: Square jaw
  • Group: Contour
  • Options often discussed: Botox
  • Where: STON Clinic, Lotte Hotel Seoul 9F

Why it happens

A square lower face is often due to a strong masseter muscle, but bone shape also matters.

What the doctor checks

We check muscle size when clenching and relaxed.

A quick self-check

Clench and relax: if the jaw angle bulges noticeably, muscle is likely a factor.

Treatments that may be considered

  • Botox: Botox is a botulinum toxin injection that relaxes specific muscles to soften expression lines or slim areas such as the jaw muscle.

Prepare three things before you visit

  • The area and change that bothers you most
  • Names, areas and dates of previous treatments
  • Your available dates and any important events

This page is general information to help you prepare for a consultation. It does not replace diagnosis or a treatment decision. Whether a treatment suits you, and how it is done, is decided by a doctor after examination. Results and side effects vary between people.

Common questions

What is the best treatment for a square jaw?

If muscle is the main cause, jaw Botox is often discussed. Bone shape cannot be changed without surgery; the doctor checks which applies.

Can it be treated in one visit?

A Botox session takes minutes, and the slimming effect develops over the following weeks.

How do I start?

Send a photo-free message describing your concern and dates on KakaoTalk, and the clinic will suggest a time.