Facial Aesthetics · Harley Street
Jaw Slimming & Bruxism in Harley Street
A non-surgical injectable treatment to relax overactive jaw muscles — easing clenching, grinding and tension while softening a heavy-looking lower face, delivered by Dr Mehrdad Honarvar.
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Jaw Slimming & Bruxism treatment is a non-surgical injectable treatment designed to relax overactive jaw muscles. It may help reduce jaw tension, teeth grinding, clenching-related discomfort and facial heaviness caused by enlarged masseter muscles.
For some patients, treatment can also create a softer, slimmer-looking lower face over time by reducing excessive masseter activity. At Dr Honarvar's clinic, the focus is on comfort, facial balance and careful treatment planning based on clinical knowledge and facial anatomy.
Dr Mehrdad Honarvar has over 20 years of clinical experience, with advanced training in facial anatomy and aesthetic medicine. His background gives him a detailed understanding of jaw function, bite forces, facial muscles and the effects of clenching or grinding on long-term function.
Dr Honarvar is a Facial Aesthetics Practitioner & Trainer. He is GDC registered, No. 76613, holds a PGCert in Aesthetic Medicine with Distinction, is Save Face accredited, an ACE Group member and an IAAFA award winner.
Medical Expertise. Aesthetic Artistry.

Doctor-led jaw treatment
With over 20 years of clinical practice, Dr Mehrdad Honarvar brings detailed knowledge of the jaw, bite and facial muscles to every Jaw Slimming & Bruxism treatment.

Tailored to your symptoms
Treatment is planned around your jaw tension, clenching habits, grinding pattern, facial shape, muscle strength and desired outcome.

Functional and aesthetic support
The aim is to reduce excessive jaw muscle activity while preserving normal functions such as talking, chewing and swallowing.
Contents
What is Jaw Slimming & Bruxism treatment?

What can this treatment address?
Jaw Slimming & Bruxism treatment uses carefully placed muscle-relaxing injections to reduce overactivity in the masseter muscles. These are the strong jaw muscles used for chewing and clenching.
When the masseter muscles become overactive, they can contribute to jaw tension, teeth grinding, facial pain, headaches and a wider or more squared lower-face appearance. By relaxing these muscles, treatment may help reduce discomfort and support a softer lower-face contour.
This treatment may be suitable for patients who clench their jaw, grind their teeth, wake with jaw soreness or notice that the lower face looks heavy or wide due to enlarged jaw muscles.
Treatment may help:
- Reduce jaw tension and clenching discomfort
- Support symptoms linked to teeth grinding
- Relax overactive masseter muscles
- Soften a square or heavy-looking jawline
- Reduce tension headaches linked to jaw overactivity
- Help limit wear linked to excessive grinding, where clinically appropriate
Jaw Slimming & Bruxism treatment
At a glance
Treatment time
Usually 15 to 30 minutes
Hospital stay
Not required
Time off work
Usually none
Shower
Usually the same day
Driving
Usually immediately
Results last
Typically 3 to 6 months
Exercise
Avoid strenuous exercise for 24 hours if advised
Suitable for
Adults with jaw clenching, grinding, jaw tension or enlarged masseter muscles, subject to consultation
The journey




Consultation
The procedure
What do I need to know?
Jaw Slimming & Bruxism treatment works by relaxing the masseter muscles. These muscles can become overactive through clenching, grinding or repeated jaw tension. For bruxism-related symptoms, the aim is to reduce excessive muscle force. For jaw slimming, the aim is to soften the appearance of a broad or square lower face caused by enlarged masseter muscles.
The price
How much does Jaw Slimming & Bruxism treatment cost?
The cost of Jaw Slimming & Bruxism treatment depends on the strength of the masseter muscles, the dose required, whether both sides are treated and whether the treatment is for functional relief, facial slimming or both.
Our prices:
- Consultation: £
- Jaw Slimming treatment: £
- Bruxism treatment: £
- Masseter treatment: £
- Follow-up review if required: £
Prices start at
£
Final treatment cost confirmed after consultation.
Ready to ease jaw tension?
Secure your consultation with Dr Mehrdad Honarvar's team in just a few minutes.
The essentials
How do you prepare for treatment?
Before your appointment, your practitioner may recommend a few simple preparation steps:
- Share your full medical history
- Tell your practitioner about any medication or supplements you take
- Mention any previous injectable treatments or complications
- Explain your jaw symptoms, grinding habits or headache pattern
- Avoid alcohol before treatment where possible
- Avoid blood-thinning medication or supplements unless prescribed or medically required
- Arrive with clean skin and minimal makeup if possible
Why have Jaw Slimming & Bruxism treatment?
Reduce jaw muscle activity
Jaw Slimming & Bruxism treatment can help reduce excessive jaw muscle activity, which may contribute to clenching, grinding, jaw tension and facial discomfort.
Advantages
Softer lower face
For patients with enlarged masseter muscles, treatment may also help soften the lower face and create a slimmer, more balanced jawline over time.
Comfortable function
The goal is to reduce overactivity while keeping your result natural and your jaw function comfortable.
Anatomy-led planning
The treatment is planned around your anatomy, symptoms and facial proportions for a balanced outcome.
Anatomy-led approach
Dr Honarvar's clinical background guides every plan, drawing on detailed knowledge of jaw function, bite forces and the effects of clenching or grinding.
Recovery timeline
Immediately after treatment
You may notice small injection marks, mild redness or tenderness around the treated area. Most patients can return to normal daily activities.
- Mild injection-site effects may occur
- Normal routines are usually possible
- Avoid rubbing or pressing the jaw area
First few days
The treated muscles may begin to relax. Some patients notice early improvement in jaw tension, although results vary.
- Jaw tension may begin to reduce
- Clenching force may feel lighter
- Effects continue to develop
Two to six weeks
Jaw slimming effects may become more noticeable as the masseter muscles gradually reduce in activity. Bruxism-related symptoms may also continue to improve.
- Lower-face contour may look softer
- Muscle tension may reduce further
- Maintenance planning can be discussed
Jaw Slimming & Bruxism treatment can support both functional comfort and facial balance.
- Reduced jaw tension
- Less clenching-related discomfort
- Support for teeth grinding symptoms
- Softer lower-face contour
- Reduced masseter bulk over time
- Non-surgical treatment with minimal downtime
Ready to relieve clenching and grinding?
Speak with our team to plan a Jaw Slimming & Bruxism treatment tailored to your symptoms and goals.
Am I suitable?
Is this treatment right for me?
Jaw Slimming & Bruxism treatment may be suitable if you want to reduce jaw muscle tension, clenching symptoms or a heavy-looking lower face caused by enlarged masseter muscles.
It may be suitable if you are concerned about:
- Jaw clenching
- Teeth grinding
- Jaw tension
- Masseter muscle enlargement
- A square or heavy-looking jawline
- Facial soreness linked to clenching
- Tension headaches linked to jaw activity
- Tooth wear linked to grinding, where clinically appropriate
You may not be suitable if you are pregnant, breastfeeding, have certain neuromuscular conditions, have an active infection in the treatment area, have allergies to ingredients or have other medical contraindications. A consultation is required before treatment.
The risks
Can risks be prevented?
Jaw Slimming & Bruxism treatment is commonly performed, but side effects and risks can occur.
Potential side effects:
- Redness
- Swelling
- Bruising
- Tenderness at injection sites
- Temporary chewing fatigue
- Temporary muscle weakness
- Temporary asymmetry
- Headache
- Variable response between patients
Preventive measures:
Risks can be reduced by choosing a qualified medical practitioner, having a full consultation and following aftercare advice. Your practitioner should be told about:
- Allergies
- Medical conditions
- Neuromuscular disorders
- Current medications or supplements
- Previous injectable treatments
- Previous complications
- Pregnancy or breastfeeding
- Jaw pain, bite concerns or grinding symptoms
Ready to book your Jaw Slimming & Bruxism consultation?
Book a consultation with Dr Mehrdad Honarvar to discuss your jaw tension, clenching, grinding, facial shape and suitability for treatment. Your plan will be guided by clinical knowledge, facial anatomy and a careful approach to patient safety and natural-looking balance.
