A square jaw often results from enlarged masseter muscles, which can be softened without surgery. At Doje Clinic, common treatment options include Jaw Botox, Shurink Universe, Fat-Dissolving Injections, chosen after a dermatologist's assessment.
Medically reviewed by [DOCTOR NAME], board-certified dermatologist · Doje Clinic, Apgujeong, Seoul · Last reviewed November 2026
What is square jaw?
A square jaw often results from enlarged masseter muscles, which can be softened without surgery.
What causes it?
- genetics
- teeth clenching or grinding
- chewing habits
How we treat square jaw
If the width comes from muscle, jaw Botox slims the lower face over 1–2 months. If it is bone, surgical options exist.
Treatment options compared
| Treatment | Downtime | Sessions |
|---|---|---|
| Jaw Botox (Masseter Reduction) | None | Repeat every 4–6 months initially |
| Shurink Universe (Korean HIFU) | Minimal | Often 1–3 sessions spaced 4–6 weeks; maintenance every 4–6 months |
| Fat-Dissolving Injections | Swelling and tenderness for several days | Usually 2–4 sessions, 2–4 weeks apart |
At-home care
- reduce gum chewing
- night guard if you grind
When to see a dermatologist
Jaw pain or clicking should be assessed by a dentist.
Key facts
| Concern group | Contouring |
|---|---|
| Main causes | genetics, teeth clenching or grinding, chewing habits |
| First-line options | Jaw Botox, Shurink Universe, Fat-Dissolving Injections |
| Consultation | Required to confirm diagnosis and plan |
Patient questions
Frequently asked questions
What is the best treatment for square jaw?
It depends on the cause and your skin. Options often include Jaw Botox, Shurink Universe, Fat-Dissolving Injections. If the width comes from muscle, jaw Botox slims the lower face over 1–2 months.
What causes square jaw?
Common causes include genetics, teeth clenching or grinding, chewing habits.
Can square jaw come back after treatment?
Some concerns are controlled rather than cured. Sun protection, skincare and maintenance help results last.
When should I see a doctor about square jaw?
Jaw pain or clicking should be assessed by a dentist.
Your skin plan, designed in Apgujeong
English-speaking consultations · Written quotes · Aftercare you can take home
Medical information on this page is general and educational. Results, downtime and suitability vary by individual. A consultation with a Doje Clinic physician is required before any treatment.