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What is masseter jaw reduction?

The masseter muscle is a major facial muscle located in the jaw that is associated with chewing and teeth grinding, TMJ or Bruxism. An enlarged masseter muscle can result in a wide or square jaw, which can be considered to be quite masculine. By injecting this muscle with Botox, the muscle weakens and over the course of times reduces in size, thereby reshaping the face to achieve softer, more rounded, oval proportions.

How does Botox reduce the masseter jaw?

To soften a square jaw using Botox injections are targeted into the masseter muscle which can causes it to weaken and shrink, thus changing the physical mass of the muscle and making it less prominent. A masseter jaw treatment with Botox usually only takes a few minutes and the results can last up to six months. Most patients require two treatment sessions, with a gap of approximately eight weeks in between.

I would just like to say a very big thank you to you for making my experience at Melior an extremely comfortable and positive one.
TW Kent

Who is it for?

Non-surgical jaw reduction is a very popular treatment amongst female patients as this method of face reshaping, without the need for surgical intervention, allows patients to re-contour a strong jawline or wider lower face with the aim of achieving a more feminine, graceful appearance without the associated expense and risks of surgery.

Read more about the benefits of jaw botox.

Botox injections for facial reshaping have become popular because of their cost effectiveness in conjunction with few side effects and for most patients there is no down time after the procedure. Although particularly popular with female patients, Botox treatments to reduce the masseter muscle are also used by male patients to soften a strong, wide or square jawline.

At Melior Clinics we are specialists in masseter jaw reduction treatments, which cost £299 and is available at all clinic locations. Free consultations are available with time built in for those patients who wish to proceed to treatment straight away.

This page is also available in Chinese (simplified): 下颌咬肌缩减.

Real patients, real results

Before and after botox for masseter jaw
Before and after botox for masseter jaw

This patient came to us for bruxism (teeth grinding) treatment. Tee used botox to relax her masseter muscle, reducing the grinding and giving her jawline a slimmer, more feminine appearance.

Before and after botox for masseter jaw
This patient came to us for bruxism (teeth grinding) treatment. Tee used botox to relax her masseter muscle, reducing the grinding and giving her jawline a slimmer, more feminine appearance.


Masseter jaw reduction Price
Masseter Jaw treatments using Botox £299

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Our masseter jaw botox practitioners

Helping you look and feel great

Masseter jaw reduction is available at these clinics

London Harley Street

39 Harley Street


10 St Peters Road
PE29 7AA


47 Dartford Road
TN13 3TE


354 Upper Richmond Road West
East Sheen
SW14 7JT


18 Cross Street


34 Papyrus Road

Why choose Melior Clinics?

Our experts will help you look and feel great

  • Whether it’s your first visit or you’re one of our returning patients, you’ll always receive a warm welcome at Melior Clinics.
  • Our aesthetic treatments enhance your natural beauty using only the highest quality, safest products and techniques.
  • In addition, we offer a range of medical and pain-relief treatments.
  • You will always be treated by one of our highly qualified and experienced doctors, nurses or skin care specialists.
  • We offer a free consultation before your treatment and free reviews afterwards, alongside outstanding aftercare from our patient liaison team.
  • All our clinics are Save Face accredited, meaning that independent experts regularly assess us to ensure we provide excellent patient care.

What our patients say

Thank you to our wonderful patients for these kind words

I’m absolutely thrilled with the results – the transformation is incredible. I just wish I’d had this done ages ago. Fantastic!


The results have changed my life! I am now able to enjoy life without the constant embarrassment and anxiety [hyperhidrosis] brings.


My face looks amazing :))


… I’m extremely thankful to Dr Timothy Beazleigh who carried out the [treatment for migraines] as I have felt so well since.


I am delighted with the result of my treatment – it’s even better than I dared to hope for.


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