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Charis Aesthetics

Jaw Slimming & Clenching in Rossendale

Treatment of the masseter muscle to soften a square jaw and relieve clenching and grinding.

Written and clinically reviewed by Ashleigh Trickett, Registered Nurse & Aesthetic PractitionerNMC 22A2789ELast reviewed
Portrait showing the lower face and jawline

In short

Jaw slimming relaxes the masseter muscle to reduce clenching and grinding and, over time, to soften a squared jawline; the clenching relief comes within two to four weeks and the shape change takes three to six months.

How long it lasts
4 to 6 months
When you see it
clenching relief at 2 to 4 weeks, shape change at 3 to 6 months
Downtime
none; some people notice mild chewing fatigue for a week or two
Does it hurt
mild
Sessions
one, reviewed at 4 weeks; shape change needs repeat treatment

The masseter is the muscle that closes the jaw. When it is overdeveloped — usually through clenching or grinding — it widens the lower face and can cause jaw ache, headaches and dental wear. Relaxing it addresses both the shape and the symptom, and for many people the symptom is the reason they come.

Two reasons people have this

Cosmetically, reducing masseter bulk narrows the lower face and creates a softer, more tapered jawline over several months.

Functionally, it reduces clenching and grinding — which for people with bruxism can mean fewer headaches, less jaw pain and less damage to their teeth. If you grind, it is worth telling your dentist you are having this done.

Timeline

Relief from clenching often comes within a few weeks. Visible narrowing takes longer — the muscle reduces gradually over two to three months, and the effect builds with repeat treatment.

You will be given written aftercare before you leave, and a direct number to reach me on if anything concerns you afterwards. Reviews are offered at two weeks so we can assess the result together and adjust if needed.

Not suitable if

  • Anyone pregnant or breastfeeding
  • Jaw pain not caused by clenching, until it has been properly investigated
  • Anyone under 18

Sources and further reading

This page is general information, not personal medical advice. Every treatment needs an individual assessment, and what is right for someone else may not be right for you.

We do not publish before-and-after images for wrinkle-relaxing treatments. The medicine used is prescription-only, and UK advertising rules do not permit it to be promoted to the public — including through result photographs. We will show you relevant examples in person at your consultation.

Common questions

Jaw Slimming & Clenching — what people ask

Will it change my face shape?
Over two to three months the lower face usually narrows and softens. It is a gradual change rather than an immediate one.
Will it help my jaw pain and headaches?
For pain driven by clenching and grinding, often yes. It will not help jaw pain from other causes, which is why assessment matters — and some jaw problems belong with a dentist or a maxillofacial specialist, not with me.
Will it affect my chewing?
Dosed correctly, no. Some people notice mild fatigue with very chewy food for a short period after the first treatment.

Get in touch

Book a consultation

Consultations are £30, and that comes off the cost of your treatment if you go ahead. No pressure to book anything on the day — if you are not sure whether you want treatment at all, that is still a good reason to come and talk.