Jawline Slimming London | Masseter Treatment for Slimming & Grinding

A doctor-led treatment that relaxes the jaw muscle to slim the lower face and ease teeth grinding, clenching, and jaw tension.

Masseter Treatment

£

375

Jawline slimming and relief from grinding and clenching
Book a Consultation
Administered only by GMC-registered doctors
100+ five star reviews
Masseter treatment relaxes the large chewing muscle at the angle of the jaw, with two clear benefits. For many clients it slims a wide or square lower face into a softer, more balanced contour over time. For others, the value is functional: it eases the teeth grinding, clenching, and jaw tension that the masseter muscle drives, often most noticeably at night.

Because the change comes from gently reducing how hard the muscle works, the result is gradual and natural rather than sudden. It suits anyone bothered by jaw width, grinding, or clenching who wants a non-surgical option. At Āatma Aesthetics London, every treatment is administered by a GMC-registered doctor inside our CQC-registered clinic at The O2, Greenwich.
The Approach

A Slimmer Jaw, Less Tension

Good masseter treatment starts with assessment. Dr Shaan examines how strongly the muscle contracts when you clench, then tailors the dose and placement to the size and strength of your jaw rather than using a fixed amount. This is what protects your natural chewing and expression while still delivering the slimming and relief you want.

The change builds gradually. Relief from grinding and clenching often comes within the first couple of weeks, while the slimming effect develops over the following weeks as the muscle settles.

Slims the jawline by easing an overactive muscle
Relieves grinding, clenching, and jaw tension
Gradual, natural change over several weeks
Book a Consultation

How masseter treatment works

Ease the Muscle, Soften the Jaw

The masseter is one of the strongest muscles in the body, working every time you chew, clench, or grind. In some people it is naturally large or overactive, which widens the lower face and drives jaw tension and grinding. Masseter treatment uses a prescription medicine that temporarily reduces the muscle's activity, so it works less forcefully.

With the muscle contracting less, clenching and grinding ease, and over the following weeks the muscle gradually reduces in bulk, softening and slimming the jawline. The effect is subtle and develops over time rather than appearing overnight, and your ability to eat and speak normally is preserved.

Treatment is administered by Dr Shaan Patel at our doctor-led clinic inside The O2 in London.
Book a Consultation
MG
Time

Treatment length

15-20 mins

Morpheus

Results seen

2-8 weeks

Durationofresults

Duration of results

4-6 months

Sessionfrequency

Session frequency

Every 4-6 months

Is Masseter Treatment Right for You?

Masseter treatment is ideal for:

-A wide or square lower face caused by an enlarged jaw muscle

-Teeth grinding, often worse at night

-Jaw clenching and the tension or headaches it can cause

-Jaw ache or tightness from an overactive muscle

-Wanting a softer, slimmer jawline without surgery

Not the right starting point if your jaw width comes mainly from bone structure rather than muscle, or if your concern is volume loss or skin laxity. Dr Shaan will assess this for you at consultation and advise the right option.

MG

Meet Dr Shaan Patel

Dr Shaan founded Āatma after years of medical training at the University of Southampton and clinical experience across hospitals in the UK and Australia. That foundation shapes how he practises aesthetic medicine: methodical, anatomically led, and conservative.

His approach is built on a simple rule - treat what's in front of you, not what's in fashion. That means honest consultations, treatment plans that prioritise long-term face shape over short-term fixes, and a willingness to say "no, not yet" or "no, not this" when it's the right answer.

"My goal is to keep you looking like you - naturally refreshed, never overdone."

Dr Shaan Patel

Book a Consultation

Experience the

Āatma Difference

Gmc registered doctors

Doctor-Led, Always

Every treatment at Āatma is performed by a GMC-registered medical doctor. Anatomical knowledge, medical judgement, and clinical accountability - never a quick treatment by someone who learnt on a weekend course.
Personalised treatments

Natural Results That Age With You

Treatments designed to enhance your features, not change them. We plan around long-term facial structure, not short-term trends - so your face still looks like you in five years, just better.
Trusted by patients

Conservative Treatment Planning

We won't always recommend the maximum protocol. After consultation, you'll receive a plan built around what your skin actually needs - sometimes that's fewer sessions, sometimes none yet. Honest care above upsell.

Other Providers

Book a Consultation
Testimonials

What Clients Say About Their Results

FAQ

Got questions?
We’ve got answers

Will masseter treatment affect my chewing or smile?

No. The dose is tailored to reduce excessive muscle activity, not to stop the muscle working. You will still be able to chew, speak, and smile normally. The aim is to ease an overactive muscle, not to disable it.

How soon will I see a difference?

Relief from grinding and clenching often appears within the first couple of weeks. The slimming effect on the jawline is more gradual and usually develops over six to eight weeks as the muscle settles and reduces in bulk.

How long does it last?

Results typically last four to six months. With repeated treatment the muscle tends to reduce over time, so many clients find they need treatment less often and the slimming effect becomes more lasting.

How is this different from jawline filler?

They do opposite jobs. Masseter treatment slims a jaw that looks wide because of muscle, by easing that muscle. Jawline filler adds definition and structure to a jaw that lacks it. Some clients benefit from one, some from a combination, and Dr Shaan will advise what suits your face at consultation.

Does it help with teeth grinding and jaw pain?

Yes, this is one of the most common reasons clients have the treatment. By easing how forcefully the masseter contracts, it can reduce night-time grinding, daytime clenching, and the jaw tension and headaches that come with them. Dr Shaan will assess whether it is suitable for you.

Is there any downtime?

No. The treatment takes around 15 to 20 minutes and you can return to your day straight away. You should avoid rubbing the area and strenuous exercise for the first few hours, and full aftercare guidance is given at your appointment.

Related Treatments

Pairs well with:

Anti-Wrinkle Injections for softening frown, forehead, and eye lines

Dermal Filler for adding jawline or chin definition where it is lacking

Profhilo for overall skin firmness and quality

Not sure which is right for you? Book a consultation and we'll build a personalised plan.

Start with a conversation

Start with a conversation

Tell us what you're thinking about. We'll get back with a recommendation tailored to your skin - no pressure, no commitment.

Terms(Required)
No payment required today
MG

Find Us

Visit Āatma at The O2

© 2026 aatma-aesthetics.com. All Rights Reserved.