Jaw slimming Botox is one of the most requested aesthetic treatments today — creating a naturally slimmer V-line facial contour without surgery, downtime, or permanent commitment. This article covers everything you need to know about masseter Botox, including how it works, which Botox type to choose, and realistic expectations.
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| Service Information — Foxy M.D Cosmetics & Clinic | |
| Treatment area | Masseter muscle — both sides of the jaw |
| Duration | 30–45 minutes (including numbing if needed) |
| Time to see results | 4–6 weeks after injection |
| Maintenance | Every 6 months recommended |
| Performed by | Licensed dermatologist |
| Reference price by Botox type |
Korean Botox (Re N Tox / Botulax): 2,499,000 VND German Botox (Xeomin): 4,599,000 VND American Botox (Allergan): 6,999,000 VND |
Jaw slimming Botox has become one of the most searched aesthetic treatments — and there are very good reasons why it has grown so dramatically in popularity across Asia.
Jaw slimming Botox involves injecting Botulinum Toxin into the masseter muscle — the large chewing muscle located on each side of the jaw, just in front of the ear.
Botox causes the masseter to relax in a controlled way, reducing its ability to contract forcefully. Over time, the muscle gradually atrophies naturally — slimming the lower face without any surgical intervention.
The result is a transition from a square or rectangular facial shape to a slimmer, more defined V-line contour — the most sought-after facial aesthetic in Asia today.
📚 Research note: According to a study published in the Aesthetic Surgery Journal, Botulinum Toxin injection into the masseter muscle produced a measurable average muscle volume reduction of 20–30% after 3 months — with a patient satisfaction rate of up to 92% when performed by a qualified practitioner.
Best suited for:
• Square or rectangular facial shape caused by overdeveloped masseter muscles
• People who grind their teeth (bruxism), which causes masseter hypertrophy and jaw fatigue
• Those wanting a natural V-line contour without surgery
• Anyone wanting subtle, reversible facial proportion adjustment
Less suitable for:
• Square jaw caused by wide bone structure rather than muscle — Botox does not affect bone
• People who already have a very slim face — additional reduction may create a gaunt appearance
• Those with naturally weak masseter muscles
This is exactly why a direct in-person assessment of jaw and facial structure by a doctor before treatment is a step that cannot be skipped.

Korean Botox (2,499,000 VND): Cost-effective, good quality — ideal for first-time masseter Botox patients or those maintaining results on a reasonable budget.
German Xeomin (4,599,000 VND): No accessory proteins — best for repeat long-term patients wanting to minimize antibody resistance risk.
American Allergan (6,999,000 VND): FDA gold standard, largest clinical database — the premium choice for those prioritizing absolute certainty and international credibility.
All three deliver effective jaw slimming results when injected correctly by a skilled dermatologist.
The differences lie primarily in product profile, formulation, and market positioning — not in immediate jaw reduction effectiveness.
Step 1 — Masseter assessment: The doctor evaluates masseter muscle size and thickness, determines whether the jaw width is caused by muscle or bone, and designs the injection protocol.
Step 2 — Cleansing: The jaw area is thoroughly cleaned before the procedure.
Step 3 — Injection point marking: The doctor precisely marks the injection points on the masseter surface for optimal results.
Step 4 — Disinfection and injection: Botox is injected into the masseter at the marked points with the correct dosage.
Step 5 — Post-injection care: The treated area is cleaned and aftercare instructions are provided.
Total session time: approximately 30–45 minutes.
Most patients can eat and resume normal activities immediately — just avoid chewing hard foods and massaging the jaw area for the first 4–6 hours.
🔹 Masseter size: Larger muscles require more Botox units — directly affecting total cost.
🔹 Botox type selected: Korean/German/American have different price points — but all three produce effective jaw slimming when injected correctly.
🔹 Cause of jaw width: Muscle-caused width responds well to Botox; bone-caused width does not — correct diagnosis before treatment is essential.
🔹 Injection technique: Correct placement and depth within the masseter determines natural-looking results — incorrect injection can cause facial asymmetry.
At reputable dermatology clinics in Da Nang, jaw slimming Botox ranges from 2,499,000 VND to 6,999,000 VND depending on the Botox type selected.
❓ Does jaw slimming Botox hurt?
The Botox needle is very fine — most patients feel only a brief mild sting.
The masseter area is generally less sensitive than the face, so discomfort is minimal and numbing is usually not required.
❓ When will I see the jaw slimming effect?
Patience is important here — results do not appear immediately.
Most patients begin noticing a visibly slimmer jaw after 4–6 weeks as the masseter gradually atrophies after Botox blocks the muscle contraction signal.
❓ Will the jaw return to its original size if I stop?
Yes — when Botox wears off, the masseter gradually recovers and may return to its original size without maintenance injections.
However, patients who maintain regular treatment often find the muscle does not redevelop to its original bulk.
❓ Does jaw Botox affect chewing?
Minimally — the masseter is partially relaxed but continues to function normally.
Some patients notice slightly reduced chewing force during the first 2–4 weeks — this is completely normal and resolves on its own.
❓ What should I avoid after treatment?
For the first 4–6 hours: avoid lying flat, do not massage the jaw area, avoid chewing hard foods.
For the first 24 hours: avoid intense exercise, saunas, and alcohol.
Jaw slimming Botox is a safe, clinically validated, and fully reversible method for achieving a slimmer V-line facial contour — no surgery, no downtime, and completely adjustable over time.
However, the naturalness and effectiveness of results depend greatly on correct diagnosis of the jaw width cause and the precision of the doctor's injection technique.
We strongly recommend an in-person consultation to assess your facial structure before committing to treatment — this prevents wasted investment in cases where Botox is not the appropriate solution.
📍 Foxy M.D Cosmetics & Clinic
248 Tran Cao Van, Thanh Khe, Da Nang
Hotline / Zalo / WhatsApp: 0905 835 874
Email: foxymdcosmetics@gmail.com · Website: foxymdcosmetics.com