Jaw Slimming
Achieve a softer, slimmer V-shaped facial contour.
Jaw slimming helps reduce the appearance of a wide or square jawline, creating a more refined facial profile while maintaining natural facial balance.
Performed by LCP-certified medical doctors.
Last updated: 17 July, 2026 • Written by RJ Clinic Content Team • Reviewed by Dr. Renee Law
What Is Jaw Slimming?
Jaw slimming is a non-surgical aesthetic treatment that reduces the appearance of a wide or square jaw by relaxing enlarged masseter muscles. The treatment helps create a softer facial contour while maintaining natural facial balance.
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A broad lower face may be caused by enlarged jaw muscles, excess facial fat, or the underlying jawbone. During your consultation, our LCP-certified aesthetic doctors assess the cause of your wider jawline and recommend the most suitable treatment based on your facial anatomy.
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For patients whose wider face is caused by enlarged masseter muscles, jaw slimming offers an effective solution with minimal downtime.
A broad or square jaw is not always caused by bone structure. Many people develop a wider lower face because of enlarged masseter muscles, the muscles responsible for chewing.
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Common causes include:
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Frequent teeth grinding (bruxism)
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Habitual jaw clenching due to stress
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Excessive chewing of hard foods or chewing gum
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Naturally strong jaw muscles due to genetics
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When the masseter muscles become enlarged, the lower face appears wider and more square. Jaw slimming treatment works by relaxing these muscles so they gradually reduce in size, creating a softer and slimmer facial contour.
Why Does the Jaw Look Wide?
Benefits of Jaw Slimming Treatment
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Creates a slimmer V-shaped facial contour
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Softens a square jaw appearance
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Non-surgical treatment
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Minimal downtime
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Quick in-clinic procedure
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Gradual, natural-looking improvement
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Suitable for both men and women
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May help reduce jaw clenching caused by enlarged masseter muscles
Treatments That Can Be Combined with Jaw Slimming
Every face is unique, and jaw slimming is just one part of facial contouring. Depending on your facial anatomy and aesthetic goals, our LCP-certified aesthetic doctors may recommend combining jaw slimming with other non-surgical treatments to achieve a more balanced and harmonious appearance.
Jaw slimming may be suitable if you:
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Have a square or broad lower face caused by enlarged jaw muscles
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Notice your jaw becomes prominent when clenching your teeth
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Prefer a non-surgical V-shape treatment
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Want minimal downtime
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The treatment may not be suitable if your wide jaw is mainly caused by bone structure or significant facial fat. A consultation allows our doctors to recommend the most suitable treatment.
Who Is Suitable for Jaw Slimming Treatment?
What Can You Expect After Jaw Slimming?
Immediately after treatment, you can return to most normal activities.
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Typical timeline:
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Day 1–3: Mild tenderness may occur
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Week 2–4: Muscles gradually begin relaxing
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Week 6–8: Jawline becomes noticeably slimmer
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Month 3–6: Results are usually maintained before repeat treatment may be recommended
Results vary according to muscle size and individual response.
Jaw slimming targets enlarged masseter muscles to create a slimmer jawline.
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Face slimming is a broader approach that may combine jaw slimming with treatments such as fat reduction, chin enhancement, or skin tightening depending on your facial anatomy.
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Our doctors perform a facial assessment to recommend the most appropriate combination for natural-looking results.
Jaw Slimming vs Face Slimming: What's the Difference?
Is Jaw Slimming Safe?
Jaw slimming has been widely used in aesthetic medicine for many years when performed by trained medical professionals.
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A proper facial assessment is important to determine the correct injection points and dosage. This helps achieve natural facial balance while reducing the risk of unwanted muscle weakness.
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At RJ Clinic, every treatment is performed after consultation with an LCP-certified aesthetic doctor.
Why Choose RJ Clinic for Jaw Slimming?
At RJ Clinic, every jaw slimming treatment is performed after a personalised consultation by LCP-certified aesthetic doctors.
Our treatment approach focuses on:
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Individual facial assessment
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Natural-looking facial proportions
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Personalised treatment planning
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Evidence-based aesthetic techniques
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Patient safety and comfort
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We recommend treatment only after identifying whether your wider jaw is caused by enlarged muscles, facial fat, or bone structure.
Frequently Asked Questions
Can jaw slimming help with teeth grinding?
Jaw slimming treatment may help reduce symptoms associated with teeth grinding (bruxism) and jaw clenching by relaxing the masseter muscles. However, it is not a cure for the underlying causes of bruxism. During your consultation, our doctors will assess whether this treatment is suitable for your condition.
Will jaw slimming make my face look unnatural?
When performed with the appropriate dosage and technique, jaw slimming aims to create a gradual and natural-looking improvement. Our doctors customise each treatment according to your facial proportions to maintain facial harmony rather than creating an overly slim appearance.
How many sessions of jaw slimming will I need?
Many patients notice visible improvement after a single treatment session. As the effects gradually wear off over time, maintenance treatments may be recommended depending on your muscle activity, facial anatomy, and aesthetic goals.
Can men undergo jaw slimming treatment?
Yes. Jaw slimming is suitable for both men and women. For male patients, treatment is carefully planned to slim the lower face while preserving masculine facial features, according to individual preferences.
Does jaw slimming affect chewing?
Most patients continue eating and chewing normally after treatment. You may notice a temporary reduction in biting strength when chewing very hard foods, but this usually does not interfere with everyday activities.
Can jaw slimming be combined with other treatments?
Yes. Depending on your facial assessment, jaw slimming may be combined with treatments such as skin tightening, chin enhancement, or facial contouring to achieve a more balanced and harmonious appearance. Your doctor will recommend a personalised treatment plan based on your goals.
At what age can I start jaw slimming treatment?
Jaw slimming is generally suitable for adults with enlarged masseter muscles who wish to achieve a slimmer facial contour. During your consultation, our doctors will determine whether the treatment is appropriate based on your facial anatomy and concerns.
Is jaw slimming permanent?
No. The effects of jaw slimming are temporary, and the treated muscles gradually regain activity over time. Maintenance treatments may help preserve the desired facial contour.
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