Jaw muscle and profile assessment
This example considers lower-face shape alongside a history of jaw tension rather than treating appearance in isolation.
View this jaw tension case studyMedical Aesthetics 360° · Chatswood & Hurstville
Face slimming consultations in Sydney
Understand what shapes your lower face. Explore face slimming, masseter prominence and jawline balance with a doctor-led assessment at MA360.
A broader or square jaw can reflect muscle, bone, facial fat, skin support or chin position. We start with the cause, your chewing function and your priorities, then explain what may be appropriate—and what may not need treatment.
Visit our Chatswood clinic or Hurstville clinic. You can enquire with your concern; you do not need to choose a procedure first.
Individual before-and-after examples. Outcomes vary; photographs cannot predict your result. The original images are shown without cropping.
View a second individual comparison
AssessmentMuscle, fat, bone and skin
Functional reviewClenching and chewing history
ApproachIndividual and proportion-led
Understanding lower-face width
A square jaw is not always a muscle concern
Strong masseter muscles can make the area near the back of the jaw look wider, especially when you clench. But the same impression may come from the underlying mandible, fullness beneath the skin, reduced skin support or a chin that appears short or recessed.
This distinction matters. An approach aimed at muscle activity will not narrow bone, remove facial fat or tighten loose skin. Assessment helps avoid choosing a treatment for the wrong tissue.
What you may notice
- A lower face that looks broader when clenching
- Visible or palpable muscle bulk near the jaw angle
- Asymmetry between the right and left sides
- Fullness beneath the jawline or chin
- A jawline that has become less defined with time
- A profile where chin position affects overall balance
Masseter muscle
Muscle-driven width often becomes more obvious on clenching. Strength, symmetry and chewing function all need consideration.
What a masseter assessment involves →Bone structure
The natural width and angle of the mandible are structural features. A non-surgical muscle approach does not change the bone.
Understand suitability and limits →Fat and skin support
Under-chin fullness or skin laxity can blur the jawline even when the masseter is not enlarged.
Compare under-chin fullness with skin laxity and tightening; they are different concerns.
Chin and facial proportion
Projection, length and the relationship between the chin, cheeks and jaw may influence how wide the lower face appears.
Read about chin profile assessment and jawline definition when facial balance is your main question.
Facial variation is normal. A square, broad or strong jaw is not a medical problem by itself. Cosmetic treatment is a personal choice, and a balanced consultation should not suggest that one face shape is inherently better than another.
Related face slimming case studies
Different faces need different plans
Read each case for its individual context. The full photographs are shown without cropping. Cosmetic appearance and jaw symptoms require separate assessment; an image cannot establish functional improvement.
Lower-face width and proportion
This case illustrates why the jaw, chin and surrounding facial proportions are reviewed together.
View this facial proportion case study
Jawline shape and dental history
This example brings teeth grinding, muscle activity and cosmetic goals into the same assessment.
View this teeth grinding case studyBruxism, clenching and jaw tension
When the concern is not only cosmetic
Bruxism is clenching or grinding that is separate from normal chewing. It may happen while awake or asleep, and some people do not know it is occurring until a dentist finds tooth wear or a partner hears grinding at night.
A prominent masseter does not prove that you have bruxism. In the same way, reducing jaw muscle activity does not repair tooth damage, protect teeth from further wear or address every trigger for grinding.
For dental context, read the NIH guide to teeth grinding and clenching. Cosmetic assessment does not replace dental diagnosis or care.
Arrange dental or medical assessment if you have
- Cracked, chipped, worn, loose or sensitive teeth
- Persistent jaw, tooth, facial or ear pain
- Morning headaches or jaw fatigue
- Clicking, locking or restricted jaw movement
- Sleep disturbance, loud snoring or possible sleep apnoea
A night guard can protect teeth and serves a different purpose from a procedure intended to change muscle activity. Some patients may need both cosmetic and dental perspectives; others may need dental care alone.
Evidence in context
Research informs the conversation. Your assessment comes first.
What recent research found
A 2026 systematic review and meta-analysis included five randomised, placebo-controlled trials with 536 participants who had masseter muscle hypertrophy. Masseter-directed treatment was associated with short-term improvement in muscle prominence, muscle thickness and patient-reported satisfaction.
The authors also found substantial variation between studies. They could not define an optimal protocol and called for standardised trials with longer follow-up. This means research can support a discussion, but it cannot predict an individual result. Read the masseter hypertrophy systematic review on PubMed.
This review concerns a specific intervention for masseter hypertrophy. It does not establish benefit for every face shape, jaw disorder or treatment pathway.
Your consultation
What a useful assessment looks at
- Your concern. What you notice, when it changed and what degree of difference you would consider worthwhile.
- Facial structure. Lower-face width, symmetry, chin position, jawline and the upper, middle and lower facial thirds.
- Muscle function. Masseter prominence at rest and on clenching, chewing strength, tenderness and asymmetry.
- Dental and medical history. Grinding, tooth wear, jaw pain, medicines, allergies, previous procedures and relevant health conditions.
- Options and limits. Expected timing, recovery, cost, risks and reasons another pathway may be more appropriate.
What may happen next
The term face slimming can refer to different clinical approaches. If muscle is the main contributor and a non-surgical option is suitable, the details are discussed privately after assessment. Changes from muscle-directed care develop gradually rather than immediately, and any effect is temporary.
If bone structure, facial fat, skin laxity or chin position is more relevant, another treatment category may be considered. A practitioner should also be comfortable recommending no cosmetic treatment when the likely benefit is small or the concern needs dental or medical care first.
Meet the medical team
Explore MA360’s doctors and the profiles of Dr Suzanna Luo, Dr Chun-Yen Huang and Dr Elena Luo. The team confirms the appropriate practitioner and availability at your preferred clinic.
Recovery and risk
Understand the trade-offs before deciding
The exact risk profile depends on the option discussed. A consultation should make both common and less common problems easy to understand.
Temporary local effects
Redness, tenderness, bruising, swelling, headache or discomfort may occur around the treated area.
Function and expression
Chewing fatigue, reduced bite force, asymmetry, altered smile or effects on nearby muscles can occur.
Contour changes
Possible outcomes include inadequate change, unwanted hollowing, skin appearing looser or temporary bulging of part of the masseter.
Seek prompt medical advice for unexpected facial weakness, difficulty speaking or swallowing, breathing symptoms, or any reaction that is severe or worsening. Follow the clinic's aftercare and emergency instructions.
Your aftercare must match the treatment selected. If a skin-tightening pathway is recommended instead, read our skin-tightening aftercare guide alongside your clinician’s instructions.
Suitability and expectations
Who may need a different pathway?
Treatment may not be appropriate during pregnancy or breastfeeding, for people under 18, where there is infection or inflammation in the area, or with certain neuromuscular conditions, medicines or previous reactions. Your practitioner needs a complete health history before making a recommendation.
Marked jaw asymmetry, a new or one-sided facial mass, persistent pain, bite change or restricted movement also deserves appropriate medical or dental investigation rather than being assumed to be cosmetic masseter enlargement.
Face slimming cost in Sydney
There is no single fee that applies to every patient. Cost depends on the cause of the concern, clinical suitability and the individual plan. A written estimate can be provided after consultation, once the recommended approach and likely follow-up are clear.
Your estimate should also make the likely follow-up clear, so you can consider the overall time and financial commitment before deciding.
Choose your Sydney clinic
Face slimming consultations in Chatswood & Hurstville
Read your clinic’s local information, plan your journey and request an appointment. Both locations offer an assessment-led starting point.
Sydney’s North Shore
MA360 Chatswood
Suite 203, Level 238B Albert Avenue
Chatswood NSW 2067
Convenient for Chatswood and surrounding North Shore suburbs, with clinic access and travel information on the location page.
Explore the Chatswood clinicRequest a consultation · select Chatswood →St George & southern Sydney
MA360 Hurstville
41–43 Dora StreetHurstville NSW 2220
For patients from St George, the Sutherland Shire and those travelling from Wollongong or the Illawarra. Plan your visit on the clinic page.
Explore the Hurstville clinicRequest a consultation · select Hurstville →Tuesday–Saturday, 9:00 am–5:30 pm · 1300 338 307. Confirm the appointment address with our team; Hurstville MediSpa uses a separate address.
Questions patients ask
Face slimming FAQs
What does face slimming mean?
Face slimming is a broad term for changing the apparent width or contour of the lower face. The right approach depends on whether the main contributor is muscle, fat, skin support, bone structure or facial proportion.
How can I tell if my masseter muscles are prominent?
Masseter bulk often becomes more visible or firm near the jaw angle when you clench. This is only one part of assessment; symmetry, bone, soft tissue and chewing function also need review.
Will face slimming change every square jaw?
No. The clearest change is generally expected when muscle bulk is an important cause of lower-face width. A muscle-directed approach cannot narrow the jaw bone or directly treat facial fat and loose skin.
When might a change become visible?
Timing depends on the clinical option. Changes related to reduced muscle activity develop gradually over a number of weeks rather than immediately. Your practitioner can discuss a realistic review window after assessment.
Is the effect permanent?
Non-surgical muscle-directed effects are temporary. Longevity varies with muscle strength, individual response, treatment history and the agreed plan. Maintenance should only be considered after reviewing the result and ongoing suitability.
Can face slimming help teeth grinding or jaw tension?
Reducing masseter activity may lessen muscle symptoms for some suitable adults, but it is not a cure for every cause of bruxism and does not protect damaged teeth. Tooth wear, sensitivity, pain or sleep-related concerns should be assessed by a dentist or doctor.
Can I still be assessed if I wear a night guard?
Yes. A night guard protects the teeth and serves a different purpose from treatment aimed at jaw muscle activity. Bring your dental history and current management plan so the roles of each approach remain clear.
What side effects should I consider?
Possible effects include bruising, swelling, tenderness, headache, chewing fatigue, reduced bite force, asymmetry, smile change, unwanted hollowing or temporary muscle bulging. Rare effects on nearby muscles can be more serious. Your individual risks and warning signs should be discussed before proceeding.
Who may not be suitable?
Suitability depends on age, pregnancy or breastfeeding, medical history, medicines, neuromuscular conditions, infection, previous reactions and the cause of the concern. Some people need dental or medical assessment before cosmetic options are considered.
How much does face slimming cost in Sydney?
Cost depends on the assessment and any suitable plan. Ask the team to confirm the consultation fee for your appointment. Treatment costs, alternatives and likely follow-up are explained before you decide. Read about suitability and cost.
Where are Medical Aesthetics 360 consultations available?
Visit the Chatswood clinic on Sydney’s North Shore or the Hurstville clinic in the St George area. Choose your preferred clinic on the enquiry form; the team confirms your practitioner, appointment and address.
Is face slimming the same as jawline sculpting or double-chin treatment?
No. Lower-face width, jawline definition and under-chin fullness can have different causes. Compare our jawline assessment guide and double-chin guide, then discuss which concern best describes what you notice.
Do I need to choose a procedure before booking?
No. Start with your concern and questions. Bring details of previous treatment, relevant medical and dental history, and any current management for clenching or grinding. The assessment helps determine what is appropriate; no treatment may be recommended.
Your next step
Clarity about your face. A plan you understand.
Bring your questions about lower-face width, masseter prominence or jawline balance. We will help you arrange a consultation at your preferred MA360 clinic.
Select Chatswood or Hurstville on the form. Our team confirms your appointment; an enquiry does not confirm a booking.