Masseter Botox London –
Jaw Slimming & TMJ Relief
How Jawline Botox Reduces a Wide Jaw & Enhances Facial Contours
What Is Masseter Botox Used For?
Struggling with tight jaw muscles, jaw pain, or teeth grinding? Our masseter Botox treatments in London can also relieve TMJ symptoms, reduce clenching, and improve comfort. This makes the treatment ideal for both aesthetic jawline slimming and functional relief from overdeveloped jaw muscles.
It is a simple yet effective procedure that involves the injection of the Neurotoxin Botulinum Type A (botox) into the large Masseter muscles to create a slim and more feminine jawline.
The masseter muscles are the muscles that are attached at the angle of your jaw and control all the movements related to chewing food. For some people, strong jaw muscles are part of their normal anatomy. However, for others a square jaw line is the result of a condition called Bruxism, which causes excessive teeth grinding or clenching.
With overuse from habitual teeth grinding, the masseter muscles become over developed and more pronounced, causing the shape of the lower face to alter and acquire that strong ‘square-jawed’ look (along with other painful and potentially more serious symptoms).
It is thought that 70% of grinding and clenching happens at night when we sleep, but it can also happen while we are concentrating or under stress. This causes a hypertrophic growth of the muscles attached to the jaw, called the masseters, and therefore a wider square-looking face.
Treating the Masseter Muscle
with Botox
Traditional treatments include anti-bruxism devices and medications, whereas recently neurotoxins such as Botox have been proven very helpful to provide relief from bruxism symptoms, including a square jawline. Injecting neurotoxin Botulinum Type A (Botox), has proven to be an innovative treatment option for targeting and treating excessive muscle activity and spasticity.
Botulinum toxin can soften the appearance of the jawline, leading to dramatic changes in face shape after regular treatment. A slimmer jawline also results in more prominent cheekbones and chin, which are especially important for women, who typically want high cheekbones and a clean jawline.
Chin sculpting with filler can also enhance the jaw angle, which is why this treatment is often done in combination with the jawline slimming procedure.
Dr. Chike Emeagi is a fully qualified aesthetic doctor, medical trainer, and founder of Hampstead Aesthetics. With over a decade of clinical experience and a Master's in Aesthetic Medicine, he is recognised for his expertise in Botox and facial contouring treatments, including masseter reduction.
How Masseter Botox Slims the Jaw
Botulinum Toxin temporarily relaxes parts of this muscle. The relaxed parts atrophy (shrink) due to disuse. This face slimming treatment results in the decreases of the lower face width by reducing the masseter size. A proper examination of the lower face and masseter muscle size determines the dose and frequency of Botulinum Toxin injections.
This treatment is safely used for:
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Teeth grinding
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Reducing jaw ache & tension
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Reducing headaches
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Contouring wide square jaw
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Balancing the upper and lower face shape
Read more about the Masseter Botox treatment in this published article
Before and After Masseter Botox: What Results to Expect
Most patients report thinning of the face and jaw as a result of treatment with botulinum toxin, while voluntary movements, such as chewing and facial expressions, are not affected by the procedure.
The procedure is highly effective, with minimal or no pain and absolutely no downtime at all. Face slimming and jaw reduction effect is seen at any time between 2 to 8 weeks.
The jawline slimming treatment can transform your face completely. In fact, people can go from having a square and masculine jaw, to a narrow and oval face in a matter of weeks.
Depending on the treatment recommended, you could start to see the results within three weeks.
Results typically lasts for three to four months. Sometimes a repeat treatment is needed 4-8 weeks later to ensure the best results, with a follow up six months after that.
Yes — when performed by a trained medical professional, masseter Botox is a safe and effective treatment for jawline slimming, clenching, and teeth grinding. It works by relaxing the overactive masseter muscle, which over time slims the lower face and relieves tension.
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Botox is MHRA-approved in the UK and widely used for both cosmetic and medical indications.
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Side effects are typically mild and temporary (e.g. slight bruising or jaw fatigue).
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At Hampstead Aesthetics, your treatment is administered by a fully qualified aesthetic doctor using clinically approved products.
Benefits of Masseter Botox for TMJ, Teeth Grinding & Jaw Tension Relief
Masseter Botox is an injectable treatment that targets the masseter muscle, the powerful jaw muscle responsible for chewing and clenching. When enlarged, it can create a wider or more square-looking lower face. Botox works by relaxing this muscle, leading to:
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A slimmer jawline
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Facial slimming for round or broad faces
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Reduced symptoms of TMJ (jaw pain or tightness)
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Relief from bruxism (teeth grinding)
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This makes it ideal for clients searching for:
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Jawline slimming Botox
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Botox for jawline London
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Botox for jaw slimming near me
Treatments that compliment Massester Botox
Looking to enhance your masseter Botox results and achieve full facial harmony? At Hampstead Aesthetics in West Hampstead, we offer combination treatments designed to sculpt, balance and rejuvenate your appearance from every angle.
These popular treatment pairings are often booked alongside jawline slimming Botox in London to help refine the lower face and boost confidence.
Chin Filler for Facial Balance
Masseter Botox slims the jaw — but chin filler brings back proportion.
By subtly enhancing your chin’s projection, we create a balanced V-line profile and define the jaw-to-chin curve.
Perfect for those wanting sharper lower face definition. Click here to read more about jawline sculpting in our Blog Post
Cheek Filler for Mid-Face Lift
As the jaw narrows, cheek enhancement helps maintain youthful contour and lift.
Adding volume to the cheeks restores harmony, especially in clients with soft or rounded features.
Nefertiti Lift (Neck Botox) for Jawline Tightening
This specialised Botox technique targets neck bands and jawline laxity.
When used with masseter slimming, it enhances jawline definition and subtly lifts the lower face — ideal for clients with early jowling or loose skin.
Polynucleotides or Profhilo for Skin Quality
Muscle slimming improves shape; these injectables improve skin quality.
Both treatments stimulate collagen and elastin, perfect for those with dullness, early wrinkles, or skin laxity after facial reshaping.
DAO Botox & Gummy Smile Correction
Refine your expression with subtle tweaks.
These micro Botox treatments lift drooping mouth corners (DAO) and reduce upper gum show during smiling. Great for refining lower-face aesthetics.
Lip Enhancement for Full-Face Harmony
Whether it's a soft lip filler or a lip flip, enhancing the lips ensures your slimmer jawline isn’t left unbalanced.
A small tweak can make your whole face look more harmonious.
Book your personalised consultation and let us create a treatment plan tailored to your facial anatomy and goals.
Masseter Botox FAQs
Is masseter Botox good for jaw slimming?
Yes — masseter Botox is one of the most effective non-surgical ways to slim the jawline, especially for people with a square jaw or overdeveloped chewing muscles.
How much is masseter Botox in London?
Prices typically range from £350–£400 depending on dosage and muscle strength. At Hampstead Aesthetics, we offer competitive, transparent pricing with expert-led care.
How long does Masseter Botox last?
Most clients enjoy results for 4 to 6 months, with peak effects appearing after 2 to 4 weeks
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Can Masseter Botox fix a wide jawline?
Yes. If your wide jaw is due to enlarged masseter muscles, Botox can visibly reduce the width of your lower face over time.
“Dr Chike was friendly & gentle and I had nice experience. I was happy with the result and the treatment wasn’t painful at all compared to other places!.”
- JinJolly78
“Dr Chike is extremely gentle, skilled and knowledgeable. He listened to my concerns and created a bespoke look on my face. I didn't get a single bruise - a bonus! Thank you so much, looking forward to seeing you again!"
- Justyna
“Dr Chike is very professional and puts you at ease. His technique is painless and results are great!”
- Xavier
“Can not praise Dr Chiké enough, he has been doing my Anti-wrinkle treatments for years and I have alway been so happy with the results! I will never go to anyone else! Absolute genius at what he does”
- Chloe
Why choose Hampstead Aesthetics for Masseter Botox?
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Experienced injector: Performed 10,000+ advanced Botox treatments
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Local clinic in West Hampstead — serving Hampstead, Camden & Finchley
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Real before & after results with natural jaw slimming outcomes
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Medical-grade safety protocols and GMC-registered care
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5-star reviews from clients seeking both cosmetic and medical jawline Botox
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Transparent pricing with no hidden fees
Dr. Chike Emeagi (MBBS MRCS MRCGP MSc MBA) is a leading aesthetic doctor in London with over 15 years of clinical experience. He is the founder of Hampstead Aesthetics, where he specialises in advanced injectable treatments, including masseter Botox for jawline slimming and bruxism relief.
A recognised trainer in facial aesthetics, Dr. Chike lectures across the UK and Europe, helping other medical professionals refine their non-surgical facial contouring techniques
Quote from Dr Chike Emeagi "I've treated thousands of patients with masseter Botox at Hampstead Aesthetics to help relieve jaw tension, reshape the lower face, and reduce bruxism. Every case is bespoke."
Whether you’re based in Camden, Belsize Park, Finchley, Cricklewood, or Queen’s Park, our West Hampstead clinic is easily accessible via the Jubilee and Overground lines.
For those looking for a trusted provider of Botox jawline slimming near me, we combine clinical expertise with aesthetic precision — without the Harley Street price tag.
Masseter Botox for Jawline Slimming FAQS
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What is Masseter Botox, and how does it work?
Masseter Botox involves injecting Botox into the masseter muscles, which are located on the sides of your jaw, to reduce their activity. This treatment is mainly used to slim the face for aesthetic reasons or to relieve jaw tension, TMJ (temporomandibular joint) disorder, or teeth grinding (bruxism). By relaxing the masseter muscles, Botox helps to soften the jawline and reduce the bulkiness caused by overactive muscles. Are you interested in this treatment? Contact us for more information!
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How long do the results from Masseter Botox last?
The results from Masseter Botox typically last between 3 to 6 months, after which you may need a follow-up treatment to maintain the effect. A 2019 study published in The Journal of Oral Rehabilitation found that patients who received Masseter Botox for bruxism experienced significant improvement in their symptoms, with some even seeing longer-lasting effects after consistent treatments.
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How much does Masseter Botox cost?
The cost of Masseter Botox can vary depending on the number of units required and the individual’s needs, but it generally ranges from £350 to £400 per session. After a consultation, we provide tailored treatment plans and personalized quotes based on your specific concerns and goals.
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Is the procedure painful?
Most patients find Masseter Botox relatively painless. A topical numbing cream is applied before the injections to ensure comfort, and the sensation is often described as a quick pinch or pressure. The procedure typically takes 15-20 minutes.
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How soon will I see results from Masseter Botox?
Initial results can be expected within 1-2 weeks, with full results appearing in about 4-6 weeks. As the masseter muscles gradually relax, the lower face appears slimmer and more contoured. If used for TMJ or bruxism, relief from symptoms like jaw pain or headaches can begin a few days after treatment.
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Are there any side effects of Masseter Botox?
Common side effects of Masseter Botox include mild swelling, bruising, or redness at the injection site, which typically resolves within a few days. In rare cases, patients may experience temporary changes in their smile or difficulty chewing, but these effects generally subside as the Botox wears off.
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How long does the procedure take?
The entire Masseter Botox procedure is quick, taking about 15 to 20 minutes to complete. Many patients schedule it as a “lunchtime procedure” since there’s minimal downtime, and you can return to your daily activities immediately.
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Can Masseter Botox be combined with other treatments?
Yes, Masseter Botox can be safely combined with other fine lines, cheek fillers, or jawline contouring treatments to achieve more comprehensive facial rejuvenation. We often recommend combination treatments during consultations to achieve your desired results.
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Who is a good candidate for Masseter Botox?
If you have a wide or square jawline caused by overactive masseter muscles or suffer from TMJ disorder, teeth grinding, or jaw clenching, you may be a good candidate for Masseter Botox. It’s a non-surgical solution for patients looking to slim their face or alleviate jaw-related issues.
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How does Masseter Botox help with TMJ and bruxism?
Botox works by relaxing the masseter muscles, which helps reduce the strain placed on the TMJ and alleviates the symptoms of bruxism (teeth grinding). Studies, like the 2019 research published in The Journal of Oral Rehabilitation, show that patients treated with Masseter Botox report fewer headaches, jaw pain, and improved sleep quality due to reduced teeth grinding.
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What should I avoid after receiving Masseter Botox?
After your treatment, it’s best to avoid massaging the area, do intense exercise, and lie flat for at least 4 hours to ensure the Botox settles appropriately. We’ll provide detailed aftercare instructions to ensure you get the best possible results.
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Can Masseter Botox cause facial asymmetry?
Masseter Botox can cause temporary facial asymmetry in rare cases, mainly if one side of the masseter muscle relaxes more. However, if needed, this effect is temporary and can be corrected with a follow-up treatment. Experienced injectors, like Dr. Chiké Emeagi, can minimize this risk by precisely tailoring the dosage to your specific facial anatomy.
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Is Masseter Botox safe?
Yes, Masseter Botox is considered a safe and effective treatment when administered by a skilled professional. Dr Emeagi has extensive experience with facial anatomy and Botox treatments, ensuring a high standard of care and excellent results.
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Does Masseter Botox affect chewing or eating?
While Botox relaxes the masseter muscles, it usually doesn’t interfere with normal chewing or eating. However, in some cases, patients may notice a slight difference in chewing force, but this typically resolves within a few weeks as the muscles adjust to the treatment.
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Can Masseter Botox be dissolved if I don’t like the results?
Unlike dermal fillers, Botox cannot be dissolved. However, its effects are temporary, and the masseter muscles will gradually regain function as the Botox wears off within 3 to 6 months. If you are unhappy with the results, the effect is not permanent, and you can choose not to repeat the treatment.
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Is Masseter Botox Suitable for Men?
Absolutely. Masseter Botox is increasingly popular with male clients who want to:
Reduce jaw clenching or tension
Soften an overly square or bulky jaw
Maintain facial definition without surgery
We customise the treatment to suit your facial anatomy and goals while preserving a strong, masculine profile.
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Where to Get Masseter Botox Near Me in North West London
Hampstead Aesthetics is based in West Hampstead (NW6) and is ideally located for clients across:
Camden
Hampstead
Finchley
St. John’s Wood
Swiss Cottage and the surrounding areas
We offer flexible appointments, discreet care, and expert treatment in a calm, welcoming clinic environment.