If you’re looking for a more contoured jawline without surgery or downtime, Masseter Botox could be the subtle yet powerful solution you’ve been searching for. At Mesglo Aesthetic Clinic London, we use precision Botox injections into the masseter muscles to slim and sculpt the lower face, creating a more refined silhouette — especially popular with clients wanting a softer or more V-shaped appearance.
Here’s everything you need to know about Masseter Botox for jaw slimming — how it works, who it’s for, and what to expect before, during, and after your treatment.
What Is the Masseter Muscle?
The masseter muscle is one of the main muscles used for chewing, located at the back of the jaw. In some people — especially those who grind or clench their teeth (bruxism) — the masseter can become overdeveloped, leading to:
🔹 A wider or squarer jaw 🔹 Tension headaches or facial pain 🔹 A more masculine lower face, which may not match your aesthetic goals
By relaxing this muscle with Botox, we can achieve both functional relief and a cosmetic slimming effect.
How Does Masseter Botox Slim the Face?
Botulinum toxin (Botox®) works by temporarily relaxing the masseter muscles, reducing their bulk over time. As the muscle shrinks due to reduced use, the outer jawline becomes:
✨ More contoured and tapered
✨ Less square or boxy
✨ Softer and more feminine (or refined for men)
This is especially effective for patients with a naturally wide jaw, or those who have developed muscle bulk from teeth grinding or clenching.
Who Is Masseter Botox For?
You may be a good candidate if you:
✅ Feel your jawline is too square or wide for your overall face shape
✅ Want to reduce facial bulk without surgery or filler
✅ Grind your teeth or suffer from tension in the jaw and temples
✅ Have one-sided facial asymmetry caused by masseter dominance
✅ Are looking for a natural-looking facial refinement
It’s suitable for both women and men, and results are tailored to maintain your natural expression and profile.
Treatment Process at Mesglo London
1️⃣ Consultation
We assess your facial anatomy, muscle activity, and symmetry. We’ll ask about any history of jaw tension or teeth grinding.
2️⃣ Precision Injection
We inject Botox directly into the masseter muscle on one or both sides of the face, depending on your facial dynamics. The treatment is quick — usually under 10 minutes.
3️⃣ No Downtime
You can return to work or normal activity right away. Any minor swelling resolves within a few hours.
When Will I See Results?
📅 Day 5–7: Muscle activity starts to reduce
📅 Week 2–3: Jaw tension eases, and the muscle begins shrinking
📅 Week 4–6: Visible facial slimming effect begins to show
📅 Month 3: Peak results — a slimmer, more contoured jawline
Results typically last 4–6 months, with top-ups recommended 2–3 times per year depending on your goals and muscle strength.
Benefits of Masseter Botox at Mesglo
🌟 Non-surgical facial reshaping 🌟 Minimally invasive and reversible 🌟 Improves facial harmony without volume 🌟 May reduce TMJ pain and clenching 🌟 Customised treatment for symmetry and proportion
Frequently Asked Questions
Q: Will it affect how I chew or eat?
A: No — when performed correctly, you’ll still chew normally. The goal is to relax, not paralyse.
Q: Will people notice I’ve had something done?
A: Most people simply notice your face looks softer, more contoured, or less tense — without knowing why.
Q: Can it be combined with other treatments?
A: Yes! We often combine jaw slimming with chin filler, cheek lift, or lip enhancement for full lower-face harmonisation.
Why Choose Mesglo for Jawline Sculpting?
📍 Based in London’s West End, Mesglo is trusted for its:
🌟 Expertise in facial anatomy and toxin precision
🌟 Subtle, natural-looking results — no overcorrection
🌟 Tailored treatment plans based on your features and lifestyle
🌟 Luxury setting with clinical safety and comfort
We don’t just treat the muscle — we treat the whole face.
Book Your Jaw Slimming Consultation Today
Whether you want to soften a square jaw, relieve jaw tension, or refine your facial shape, our team will help you achieve natural, sculpted results with Masseter Botox.
📍 Mesglo Aesthetic Clinic London
Unit 4, 10 Portman Square, London W1H 6AZ
🌍 https://mesglolondon.co.uk/
📅 Book your personalised consultation today and take the first step toward a more contoured, relaxed lower face — the Mesglo way.