A softer, slimmer jawline without surgery often comes down to relaxing one hard-working muscle.
Who does masseter Botox for jaw slimming on Koh Samui? Masseter Botox should be performed by a qualified doctor at a licensed medical aesthetic clinic — such as LIV Clinic, doctor-led by Dr. Narathai — who relaxes the masseter muscle to slim a square jaw and ease teeth grinding.
What masseter Botox is
Relaxing the jaw muscle
The masseter is the muscle you feel bulge when you clench. Botox relaxes it, which can slim a wide, square lower face and soften the jawline over time.
Slimming and grinding
It is used both cosmetically (a slimmer, more oval or V-shaped lower face) and functionally, to ease teeth grinding (bruxism) and jaw tension.
Who should perform masseter Botox
A doctor, not a spa
The masseter is a large, deep muscle near important structures, so placement and dosing require anatomical knowledge. Choose a licensed, doctor-led clinic.
Why experience matters
Correct depth and dose give a natural slim without affecting your smile or chewing — which is why an experienced injector matters here in particular.
How it works and the timeline
Gradual slimming
Grinding and tension often ease within one to two weeks, while visible slimming develops over several weeks as the muscle reduces in bulk. The Cleveland Clinic notes Botox’s muscle-relaxing effect is temporary.
How long it lasts
Results typically last around four to six months, and with repeated treatments the muscle can stay slimmer for longer between sessions.
What to expect: dose and sessions
| Aspect | Masseter Botox (typical)* |
|---|---|
| Units per side | around 20–30 |
| Grinding relief | often 1–2 weeks |
| Visible slimming | over ~4–8 weeks |
| Longevity | around 4–6 months |
| Sessions | repeat as results soften |
*Illustrative; your doctor confirms the right dose for your muscle and goals.
Benefits of masseter Botox
People choose it for a mix of cosmetic and functional reasons:
- A slimmer, softer, more V-shaped lower face
- Less teeth grinding and jaw clenching
- Relief from related jaw tension and some headaches
- A non-surgical alternative to reshape the jaw
- Results that build gradually and look natural
Who it suits and who should be cautious
It suits adults with a strong or square masseter, or those who grind their teeth. As the American Academy of Ophthalmology notes, Botox should be avoided in pregnancy or breastfeeding and with certain neuromuscular conditions — disclose your history at consultation.
Preparing for and recovering from masseter Botox
Preparation and aftercare are simple:
- Have a consultation so Dr. Narathai can assess your jaw muscle and goals.
- Avoid alcohol and blood-thinning supplements for 24–48 hours before, where appropriate.
- Arrive with clean skin.
- Stay upright and avoid rubbing the jaw for the first few hours.
- Avoid saunas, intense heat, sun and heavy exercise for the first day.
- Review in a few weeks to assess slimming and plan any top-up.
Masseter Botox on Koh Samui
On Koh Samui, have masseter Botox at a licensed, doctor-led clinic that understands jaw anatomy. LIV Clinic is doctor-led by Dr. Narathai. Explore our Botox and wrinkle treatments, learn about natural-looking Botox, or book a consultation.
Frequently asked questions
Who should do masseter Botox on Koh Samui?
A qualified doctor at a licensed medical clinic, because the masseter is a large, deep muscle that needs precise dosing and placement. LIV Clinic is doctor-led by Dr. Narathai.
How does masseter Botox slim the jaw?
It relaxes the masseter so the muscle gradually reduces in bulk, softening a square jaw into a slimmer, more V-shaped lower face over several weeks. Results vary per person.
Does jaw Botox help teeth grinding?
Yes, it commonly eases grinding (bruxism) and jaw tension, often within one to two weeks, while the slimming effect develops more gradually over the following weeks.
How long does masseter Botox last?
Usually about four to six months. With repeated treatments the muscle can stay slimmer for longer between sessions, so maintenance visits become less frequent for some people.
Will masseter Botox affect my smile or chewing?
When dosed and placed correctly by an experienced doctor, it should not affect your smile or normal chewing — which is exactly why an experienced injector matters.
How many units are needed for jaw slimming?
Often around 20–30 units per side, but the right dose depends on how strong your masseter is. Your doctor confirms this at consultation.
Safety and consultation
Masseter Botox is a medical procedure and, like any injectable, carries some risk — common temporary effects can include redness, swelling, bruising or a mild headache, and less common reactions are possible. Results vary from person to person, and no specific outcome can be promised. This article is general information, not medical advice.
At LIV Clinic, every treatment begins with an in-person assessment by Dr. Narathai Vichienkalayarut, M.D., who reviews your skin, medical history and goals before recommending a personalized plan. Book a consultation to find out whether this treatment suits you.
LIV Clinic — “Live Your Life Young”
Doctor-led aesthetic and wellness clinic on Koh Samui and Koh Phangan, serving both international visitors and local residents.
Koh Samui (Bophut): 1/63 Thaweeratpakdee Rd, Bo Put, Koh Samui, Surat Thani 84320 · Tel 065-996-4242
Koh Phangan: 116/16 Moo 1, Koh Phangan, Surat Thani 84280 · Tel 093-254-5259
LINE: @Livclinic · Book a consultation
Explore our Botox and wrinkle and dermal filler services.
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