Jaw Slimming London

A defined, refined jawline is one of the most desirable features in facial aesthetics. For patients with an overdeveloped or wide jaw — often caused by an enlarged masseter muscle — non-surgical jaw slimming offers a precise, effective way to refine the lower face and restore harmony to the facial profile.

Dr Gregorio De Carvalho assesses every patient individually and explains exactly what is achievable for your anatomy.

What is jaw slimming?

Jaw slimming is a non-surgical treatment that addresses the overdevelopment of the masseter muscle — the large muscle responsible for chewing that sits at the back of the jaw. When this muscle is enlarged, it can create a square, heavy or wide jawline that many patients find disproportionate to the rest of the face.

At Vitalumina, Dr Gregorio conducts a thorough assessment of the masseter muscle, the overall jaw anatomy and your aesthetic goals before recommending any treatment. The result is a more refined, slimmer jaw profile and a smoother lower face contour — achieved without surgery, anaesthesia or significant downtime.

Jaw slimming addresses masseter width specifically. For patients whose main concern is jawline definition or skin laxity along the jaw and neck, our Neck & Jawline Lift may be more suitable — Dr Gregorio will advise on the right approach during consultation.

A medical solution for masseter hypertrophy

Beyond aesthetic concerns, masseter hypertrophy is often associated with bruxism (teeth grinding), jaw clenching and chronic tension in the lower face. Many patients seeking jaw slimming experience significant improvement in these symptoms as a secondary benefit of treatment. Many patients choose to combine jaw slimming with facial contouring for a more comprehensive lower face refinement.

The approach is gradual and progressive. Results develop over 4–6 weeks as the muscle relaxes and reduces in volume, producing a refined jawline that looks entirely natural. Many patients also report a noticeable reduction in jaw tension and bruxism-related discomfort.

Treatment at a Glance

Treatment price From £380

Procedure time 20–30 minutes

Anaesthesia Optional topical

Downtime None — return to normal activities same day

Onset Gradual over 2–4 weeks

Full effect 6–8 weeks

Duration 4–6 months

Sessions Single — top-up at 4–5 months

Non-Surgical Definition No surgery or downtime Jaw slimming is performed in clinic in 20–30 minutes with no anaesthesia and no recovery period. Results develop gradually over 4–6 weeks as the masseter muscle progressively relaxes and reduces in bulk.

Trusted by patients across London.

★★★★★

Dr José Gregorio is truly exceptional. I trust him with my face like no one else, and that says it all. His expertise, precision, and aesthetic eye are outstanding. Every procedure leaves me looking refreshed, natural, and confident.

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★★★★★

Dr José Gregorio is truly exceptional. I trust him completely with my face. His skill, precision, and strong aesthetic eye are outstanding. The results are always natural, balanced, and never overdone.

Angelica Lopez Official

★★★★★

Dr Gregorio is a highly qualified professional with an excellent eye for achieving natural aesthetic results. He is experienced and offers a full range of aesthetic treatments, including advanced facial rejuvenation options.

G A

★★★★★

I had an excellent skincare consultation and treatment with Dr Gregorio. He was thorough, attentive, and took the time to tailor the treatment to my skin’s needs. I felt very well looked after from start to finish and noticed a clear improvement.

Ian Johnson

★★★★★

An excellent experience from start to finish. From the very beginning, the staff were kind and professional, always attentive to every detail. The facilities are spotless, modern, and inspire complete confidence.

Roimar De Carvalho

★★★★★

I had an amazing experience with Dr Gregorio for both treatments. From the moment I arrived, he made me feel completely comfortable. The whole process was painless, which really surprised me, and the results looked natural and elegant.

Mark Johnson

★★★★★

I had several procedures done with Dr Gregorio and I loved the results. His work is very professional and successful. Based on my own experience, I highly recommend him.

Lizete Ferriera

★★★★★

I have had the opportunity to use Dr Gregorio’s services and he is truly very professional in his work. He always meets my expectations and helps me feel my best.

Martha Toro

★★★★★

I recently had a shoulder contour treatment, together with an upper facial rejuvenation technique performed by Dr Gregorio. The results are outstanding. My skin looks smooth, firm, defined, and completely natural.

Tianyuan Wang

★★★★★

Dr Greg is the best in London. He has done my treatments and he is truly the best. His work is so natural that nobody will notice what I have had done. He always knows exactly how to enhance my features beautifully.

Isabelle Wong

★★★★★

A very competent doctor with extensive experience. I highly recommend him for his excellent clinical results.

Stella Stefanova

★★★★★

I have known Dr Gregorio for more than 10 years and I have always been very satisfied with the results of every procedure he has performed on me. His work is consistently professional, thoughtful, and reliable.

Catalina Drane

★★★★★

I loved Dr Gregório’s work and highly recommend him.

Lauriane Ferreira

★★★★★

The best doctor in Ontario!

Alexander Zerpa

★★★★★

Five-star experience.

Fátima Patricia Araujo Silva

★★★★★

I have been a patient of Dr Gregorio for more than 10 years and I can confidently say my experience has been exceptional. From the first appointment, he made me feel comfortable and valued, always taking the time to understand my needs.

Lucianne Sythes

★★★★★

Excellent experience.

Ingrid

★★★★★

Excellent experience.

Maria Gil

Your jaw slimming journey. Step by step.

A clear, medically-led process from first consultation to a refined jaw profile. Dr Gregorio assesses your masseter anatomy and designs a personalised treatment protocol before any treatment is performed.

Consultation & Assessment

Dr Gregorio assesses the size, shape and symmetry of your masseter muscle and discusses your goals for the jawline and lower face profile. He explains the treatment process, realistic outcomes and the expected timeline for results. No treatment is recommended without a complete clinical assessment.

Muscle Mapping

The masseter muscle is carefully mapped on each side of the face. The treatment points are identified based on your specific anatomy, with careful attention to symmetry. The number and placement of treatment points varies by patient and is calculated to ensure a balanced, harmonious result.

Treatment

Treatment is administered via a small number of precise injections in each masseter muscle. The procedure takes 20–30 minutes. Mild tenderness in the treated area for 24–48 hours is normal. Most patients return to normal activities immediately. Strenuous chewing is avoided briefly as a precaution.

Progressive Slimming

The masseter muscle relaxes and reduces in volume gradually over 4–6 weeks. The jaw profile becomes visibly slimmer and the lower face more refined. Full results are visible at 6–8 weeks. A review is offered to assess symmetry and the overall outcome.

What jaw slimming addresses.

Jaw slimming treatment addresses several concerns related to masseter muscle development. Dr Gregorio assesses each case individually — the benefits experienced vary by patient depending on their anatomy and goals.

Jaw Profile Refinement

The primary goal of treatment — reducing the bulk of an overdeveloped masseter to create a slimmer, more refined jaw profile. The lower face appears more proportionate, with a softer transition from cheek to chin.

Facial Harmony

An overdeveloped jaw can dominate the facial profile and create disproportion with the upper face. As the masseter reduces, the overall facial balance improves — the eyes, cheeks and lips become more prominent within a more harmonious frame.

Bruxism Relief

Many patients with masseter hypertrophy also suffer from bruxism (teeth grinding), jaw clenching and morning jaw tension. Treatment often produces a significant reduction in these symptoms — a meaningful functional benefit reported consistently by patients.

Tension & Headaches

Chronic masseter tension can contribute to tension-type headaches, particularly in the temples and behind the eyes. Reducing the muscle’s overactivity often relieves this pattern of headache for patients who experience it.

Symmetry & Balance

Asymmetry between the two masseter muscles is common — particularly in patients who chew predominantly on one side. Dr Gregorio addresses asymmetry precisely to restore balance to the jaw profile.

Frequently asked questions about jaw slimming in London.

What is jaw slimming and how does it work?

Jaw slimming is a non-surgical treatment that reduces the bulk of the masseter muscle — the large muscle at the back of the jaw — through a small number of precise injections. Treatment takes 20–30 minutes. The muscle relaxes and reduces in volume gradually over 4–6 weeks, producing a slimmer, more refined jaw profile.

How long do results last?

Results from jaw slimming typically last 4–6 months. The masseter is a strong, frequently used muscle, which means duration may be slightly shorter in patients with high muscle activity (e.g. heavy chewers, bruxism sufferers). Most patients maintain their preferred jaw profile with a top-up session every 4–5 months. Duration of results often increases with repeated treatments.

When will I see the results?

The jaw begins to slim gradually from 2–4 weeks after treatment, with the full result visible at 6–8 weeks as the masseter reaches maximum reduction. Results are progressive and natural throughout — at no point does the jaw look treated or abnormal. A review is offered at this stage to assess the outcome.

Is jaw slimming safe?

Yes — when performed by a qualified medical doctor following a thorough assessment of the masseter musculature. At Vitalumina, Dr Gregorio De Carvalho has extensive experience with this treatment and a detailed understanding of facial anatomy. All treatments follow strict medical protocols and are preceded by a full clinical assessment.

Will it affect my ability to chew?

The masseter has many functions, including chewing, jaw stability and facial expression. Treatment reduces the muscle’s bulk but does not reduce its function. Most patients experience no functional limitation in normal eating. Strenuous chewing of very firm foods is avoided briefly as a precaution; this resolves within days.

Does jaw slimming help with bruxism?

Yes — relief from bruxism (teeth grinding) and jaw clenching is one of the most consistently reported benefits of jaw slimming. By reducing the masseter’s overactivity, the treatment relieves the chronic tension that drives bruxism and the morning jaw soreness associated with it. Many patients report dramatic improvement.