Jaw Slimming Injections

Treatment at a Glance

TREATMENT TIME
FROM 30 - 45 minutes
DURATION
Up to 12 months
DOWNTIME
Minimal to none
NUMBING
Yes
jaw slimming injections to the masseter muscles in a Singapore clinic
Jaw slimming injections target the masseter muscles to create a softer, more balanced lower face without surgery.

Many people feel self-conscious about a broad or square jaw, especially when it affects facial balance or the way the face looks in photos. Jaw slimming injections offer a non-surgical solution to soften the lower face by gently relaxing the muscles that make the jaw appear prominent.

Every treatment is tailored to your unique facial structure and performed by a SMC registered doctor, ensuring safe and natural-looking results that add to your confidence.

How do jaw slimming injections work?

The masseter muscles are located at the sides of the jaw. They contribute to chewing and can become enlarged through too much activity or genetics. When there is excessive muscle bulk, this may create a squared jawline or a heavier lower face appearance.

Jaw slimming injections work by temporarily reducing the activity of these muscles using neurotoxins. As the muscles relax, the jawline gradually appears narrower and the lower face contour becomes softer.

  • Assessment of jaw muscles – our doctor evaluates muscle size, strength and symmetry, along with facial proportions, to determine suitability and dosing.
  • Targeted muscle relaxation – neurotoxin injections are administered directly into the masseter muscles. This reduces muscle contraction while preserving normal jaw function for chewing.
  • Gradual contouring – over several weeks, the reduction in muscle activity leads to a subtle narrowing of the lower face. Results develop progressively, maintaining a natural look.

What are the benefits of jaw slimming injections?

The injections offer a non-surgical approach to improve the appearance of a broad or square jaw, with benefits including:

  • Softening of the lower face for a more balanced contour
  • Reduction in visible jaw prominence caused by overactive masseter muscles
  • Non-surgical treatment with minimal disruption to daily activities
  • Gradual, natural-looking results that preserve facial expression
  • Customised approach tailored to individual anatomy and aesthetic goals
facial contours from jaw slimming injections.
Non-surgical jaw contouring can enhance facial harmony, giving a subtly refined lower face tailored to individual anatomy.

What are the possible side effects of jaw slimming injections?

The treatment is generally well-tolerated, but as with any medical procedure, there are potential risks. This may include:

  • Mild swelling, redness or tenderness at the injection sites
  • Temporary bruising in the treated area
  • Slight asymmetry or unevenness, which usually resolves naturally
  • Temporary changes in chewing strength or mild muscle weakness
  • Rare allergic reactions or unexpected discomfort

What to expect during jaw slimming injection sessions?

From the initial assessment to the moment you leave the clinic, each step is carefully planned to ensure comfort, precision and natural-looking results.

Before any injections, a consultation is conducted to assess your jaw muscles, facial symmetry and overall proportions. Our doctor will review your medical history, discuss your aesthetic goals and explain the procedure in detail. This includes potential side effects, expected results and any complementary treatments that may enhance the outcome. The consultation ensures that the treatment plan is personalised and suited to your anatomy.

During the procedure, fine needles are used to inject precise doses into the masseter muscles. The session is brief, usually taking only a few minutes per side. Localised discomfort is typically mild and temporary. Our doctor carefully marks out injection sites to ensure even results, minimise risks and maintain natural facial expression throughout the process.

Immediately following the procedure, mild swelling, tenderness or slight redness may occur around the injection sites. These effects are usually temporary and resolve within a few days. Most patients can resume their normal activities after an initial period of strictly no facial massage, strenuous activities or steam room/saunas following their treatment .

jaw symmetry from slimming injections Singapore
A thorough assessment of jaw muscles, facial proportions and symmetry ensures precise treatment and natural results.

Post-treatment aftercare following jaw slimming injections

Adhering to post-treatment care is essential to let the jaw muscles relax well without compromising treatment effects as well as ensuring that no complications can happen. 

After jaw slimming injections, patients may be advised to:

  • Apply cleanser and skincare gently
  • Avoid massaging, rubbing or pressing on the treated area
  • Refrain from strenuous exercise or physical activities
  • Avoid strenuous exercise or activities that may place pressure on the treated area until advised otherwise by your doctor.
  • Avoid sleeping on the treated side or placing pressure on the treated area.

These measures help ensure the injections settle effectively, reduce the risk of temporary asymmetry or swelling and allow the lower face to gradually adopt a softer, balanced contour.

post-treatment care instructions after non-surgical jaw slimming treatment.
Following personalised aftercare advice supports smooth recovery and helps the jaw muscles settle evenly for optimal contour.

How soon will I see results?

Jaw slimming injections work gradually, as the masseter muscles slowly relax over time. Patients can generally expect:

  • Early changes – subtle contouring may become noticeable within 2 to 4 weeks
  • Progression – the lower face continues to soften as muscle activity decreases
  • Optimal effect – full results often appear after several months, depending on individual response, muscle strength and treatment area

How many treatment sessions are needed?

The effects of jaw slimming injections are temporary and some individuals may require repeat sessions to maintain the desired contour. In general, treatment frequency may include:

  • Single session – many patients notice improvement after one treatment
  • Maintenance – results gradually wear off over several months; follow-up sessions may be recommended
  • Personalised plan – our doctor will advise on the number and frequency of sessions based on muscle activity, response to treatment and aesthetic goals
masseter muscle injections
Regular follow-up and early assessment allow doctors to monitor progress, adjust treatment and maintain balanced, natural-looking results.

Book an Appointment

Taking the first step towards a softer, more balanced jawline starts with a personalised consultation. This is your chance to discuss your goals, ask questions and explore whether jaw slimming injections are right for you in a relaxed and no-pressure environment.

At Cove Aesthetic Clinic, our doctors prioritise your comfort, safety and natural facial harmony. We will work with you to create a treatment plan tailored to your features. To discover if jaw slimming injections are the right treatment for you, contact us to schedule an appointment.

Frequently Asked Questions

Jaw slimming injections target only the bulk of the masseter muscles, not their essential function. Normal chewing is usually unaffected, though mild temporary weakness may occur in the first few days.
The effects are temporary and vary depending on muscle activity, treatment area and individual response. Many patients notice results for several months before gradual muscle activity returns. Maintenance sessions can be scheduled to sustain the desired contour.
Yes. For some patients, complementary treatments such as High-Intensity Focused Ultrasound (HIFU) can be used alongside jaw slimming injections. HIFU can help lift and tighten the skin, enhancing the overall lower face contour and supporting a more defined, balanced appearance. Our doctor will advise if this combination is suitable for you.
Most patients can return to normal activities immediately. Mild tenderness or swelling may occur but generally resolves within a few days. Our doctor will provide some personalised instructions to ensure a smooth recovery.
Jaw slimming injections are suitable for individuals looking to soften the appearance of a broad or square jaw due to muscle prominence. A consultation is required to assess your facial anatomy, discuss goals and determine if this treatment is appropriate for you.
Jaw slimming injections may not be suitable for individuals who are pregnant, breastfeeding, or have certain neuromuscular or medical conditions. A medical consultation is required to assess suitability and safety.

NO TWO FACES ARE THE SAME, AND NEITHER ARE our treatments.

Customised treatment plans always work best. We tailor each treatment plan to your specific needs, ensuring you get the results you desire.  Our patient’s journey starts before their booking – and continues after their COVE experience.
Book an appointment
STEP ONE

Book a Consultation

We require new patients to attend a consultation with our doctors so we can better understand your aesthetic concerns. At Cove, we genuinely care for our patients. Consultations are in-depth, never rushed, and we will never recommend treatments that you do not need. Simply drop us a WhatsApp or a phone call to book an appointment!
STEP TWO

Come On Over

It’s time to come into COVE and meet us for your consultation! During this phase, we encourage you to maintain an open mind. While you may have a vision in mind, our doctors may offer different advice based on their assessment of your condition and desired treatment outcomes.
STEP THREE

Begin Your Transformation

You’ve consulted our Cove Experts, and the treatment plan has been discussed with you. We’re now ready to make your transformation happen! To ensure no time is wasted, we recommend starting your treatment in the same session as your consultation. You’ll love how each visit to COVE is a boost to your self-confidence! 
Wheelock Place | 501 Orchard Rd, #04-07, Singapore 238880
Guoco Tower  | 7 Wallich Street, #B1-14, Singapore 078884

WHEELOCK PLACE (ORCHARD)

501 Orchard Rd, #04-07, Singapore 238880
hello@coveaesthetics.com.sg
(65) 6734 3977
(65) 8082 0998
Mon-Fri: 10:00am to 8:00pm

Sat: 9:30am to 4:00pm 

Closed on Sundays & PH

GUOCO TOWER (TANJONG PAGAR)

7 Wallich Street, #B1-14, Singapore 078884
hello@coveaesthetics.com.sg
(65) 8339 3518
(65) 8339 3518
Mon-Fri: 10:00am to 8:00pm

Sat: 9:30am to 4:00pm 

Closed on Sundays & PH
Copyright © 2026 Cove Aesthetic Clinic. All Rights Reserved.
Copyright © 2026 Cove Aesthetic Clinic.
All Rights Reserved.
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