Jaw Slimming Injections in Portsmouth

You're in the right place for jaw slimming in Portsmouth. We treat the masseter muscle with prescription-only anti-wrinkle injections, slimming the lower face and easing jaw tension at our clinic in Cosham. We also treat double chins and cheeks by reducing the buccal fat or double chin area with fat dissolving injections specific for face.

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Time 15-30 minutes
Results visible Gradual slimming over 4-6 weeks
Downtime None
Duration 3-6 months
From £299

A slimmer jawline without surgery

The masseter muscles sit on either side of the jaw. In some people these muscles are naturally large, or have become bulky through habitual clenching or grinding. This creates a wider, squarer jaw shape.

Anti-wrinkle injections placed into the masseter muscle cause it to gradually reduce in size over four to six weeks. As the muscle shrinks, the jaw becomes narrower and the lower face looks slimmer and more defined.

The treatment also relieves the tension, headaches and tooth wear caused by jaw clenching and grinding, which many clients find just as valuable as the cosmetic result.

Your first consultation is free.

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What jaw slimming can do

Reduce jaw bulk

For clients with naturally large masseter muscles, or those that have grown through clenching, injections gradually slim the area over several weeks.

Soften a square jawline

A wide jaw can make the face look heavier or more masculine than the client wants. Reducing the masseter creates a softer, more tapered lower face.

Relieve jaw clenching and grinding

Bruxism, the habit of clenching or grinding the teeth, often happens during sleep. Jaw slimming injections reduce the force the muscle can generate, easing tension and protecting the teeth.

Testimonials

What our clients say

RAD

2 months ago

Very happy with my consultation. I got the answers I was hoping for and I will soon be booking myself in for a quick and easy mole/sun spot removal. I now have a new understanding of what the problem is and what has caused it. Thank you.

josephine C.

2 months ago

Even though I couldn't have the treatment I wanted Carly was very helpful and knowledgeable

Kelvin W.

2 months ago

I went for an ultrasound scan due the NHS appointment waiting time was a longtime away, the service I recieved from Andrea was excellent, second to none, Andrea explained everything including the results of the scan straight afterwards.

Jay

3 months ago

I’ve suffered with rosacea for several years and have tried all sorts of creams, skincare routines and products, but nothing really made a lasting difference. Looking after my skin and being mindful of my diet definitely helps to keep it under control, but IPL at Changes Clinic has made the biggest difference by far. The redness in my face has reduced so much, and even when I do get a flare up, it’s nowhere near as bad as it used to be because the underlying redness has improved so much. Everyone at Changes Clinic has been friendly, professional and really knowledgeable. They’ve always taken the time to answer any questions and made me feel comfortable throughout the whole process. I’d happily recommend Changes Clinic to anyone who suffers from rosacea and is thinking about IPL. It’s made a huge difference to my skin and has given me so much more confidence.

Lee B.

3 months ago

It’s the first time I’ve done something like this. What a lovely place & people. Very kind, polite & efficient. Very impressed with my procedure, obviously, it hasn’t healed yet, but will definitely be back for more treatment & also considering other treatments too. Well impressed and everything was explained as the treatment was carried out, pleasantly surprised, thank you so much for taking such good care of my skin. Lee B

duncan T.

5 months ago

Changes Clinic provides a super professional and very competitively priced service, I’ve just completed two sessions to have some skin lesions removed and I was very well looked after ands made to feel at ease with the whole process. I would recommend them for anybody needing similar services.

Maria K.

5 months ago

Absolutely exceptional service and results. This clinic combines professionalism, expertise, and luxury perfectly. The team are incredibly skilled and attentive, and every visit feels calm, personalised, and premium.

Alex G.

5 months ago

I had PRP Hair Treatment, with Sumayiah, she is very friendly, she takes the time to explain the procedure and really makes sure to focus on target areas. I have had 2 treatments so far and I already see a difference in my hair density and texture. She can use a gun or syringe, the syringe goes deeper and achieves better results, so its worth asking for the syringe method. I combined my PRP with Calecim serum and that gives an even greater boost. So I recomend you sign up and ask for a booking with Sumaiyah, you'll be very happy that you did..

Alex G.

5 months ago

I had PRP Hair Treatment, with Sumayiah, she is very friendly, she takes the time to explain the procedure and really makes sure to focus on target areas.I have had 2 treatments so far and I already see a difference in my hair density and texture. She can use a gun or syringe, the syringe goes deeper and achieves better results, so its worth asking for the syringe method.I combined my PRP with Calecim serum and that gives an even greater boost. So I recomend you sign up and ask for a booking with Sumaiyah, you'll be very happy that you did..

Darcy S.

5 months ago

Been to changes this morning, staff was very welcoming and I had the perfect treatments. Will be returning!♥️

Laurie loz L

6 months ago

Very good, the massage lady knows what's she is doing. Definitely worth a visit or 3

Emile J.

7 months ago

One of the best decisions I’ve made for my skin! The treatments are effective, safe, and handled by experienced professionals. I struggled with acne for years, and after visiting this clinic, I finally see clear and healthy skin. The staff always follows up after treatments, which shows how much they care about their clients’ progress. Their attention to detail and dedication to customer satisfaction is truly impressive. I would highly recommend this clinic to anyone who wants real results and excellent service.

Aitch O.

7 months ago

Lovely relaxed atmosphere with great staff. My lazer hair removal was undertaken by two very capable proffessional young women Kelly and Surmaiyah. Both demonstrate constant care and ensure this not always comfortable experience is as pleasant as possible. The facility is immaculately clean and there is excellent visitor free parking available. I have no hesitation in recommending the clinic to others and whilst I can only comment on the treatments I have received to date I will be availing myself of some of the others services offered.

Pamela K.

8 months ago

I am so glad I visited the Changes Clinic today for an upper abdominal ultrasound. I was a nervous wreck as I have a bit of a phobia of scans & Andrea was just brilliant with me. So reassuring, she went above & beyond with careful detailed descriptions, even went over some areas twice just for extra reassurance. I left smiling with a huge weight lifted off my shoulders. I have already recommended to a friend & highly recommend to anyone experiencing symptoms they’d like some extra peace of mind for. Was also really easy to book & communication excellent throughout. Thank you so much!!

Mayumi F.

8 months ago

I’ve been attending changes for facial hair removal for about 6 months now and I can honestly say it’s been one of the best and easiest experiences for me. Sumaiyah has been amazing through every step. From consultation to our current progress. She shows great professionalism, compassion, consideration -especially when I’m having a bad pain tolerance day- and is very meticulous in which the results are to show for it. Every appointment I get a little nervous and Sumaiyah has always put my nerves at ease and worked at a pace that suits me and my needs. I’m very thankful to work with her and be attending changes clinic. I would recommend their treatment. The staff are very welcoming. Adriana Verrier :) .

Mayumi F.

8 months ago

Monnia L.

9 months ago

Andrea provides a highly professional and exceptional service. With over 20 years NHS experience you are in good hands. Any issues and their significance are explained in full. A highly recommended health screening and well-being service.

Charlie Jane Y.

10 months ago

I had an amazing experience — very friendly and welcoming from the moment I arrived. She was super helpful, incredibly knowledgeable, and truly professional throughout. She made me feel completely at ease. Such a down-to-earth lady that you can feel genuinely comfortable with. Her prices are so reasonable and very affordable too. I highly recommend Andrea

Garry H.

2 years ago

Chloe was very well informed and helpful. There was probably too much information to absorb in the time span, and more published literature would be helpful (FAQs, prices, offers, medical considerations etc)

Linda D.

2 years ago

Such wonderful staff. Professional, yet friendly to keep any worries at bay. Thank you all for being so amazing and supportive!! Linda & Pippa Docherty

stephen G.

2 years ago

Great work on my lipoma. Can’t remember the ladies name. Naomi or Natasha? Was lovely. How is she a grandmother???

Karen F

2 years ago

A warm and friendly welcome at this beautiful clinic. Practitioners were excellent, explaining the treatment and after care and putting me at complete ease. I’m looking forward to seeing the results of my first Focus Dual Radio Frequency Needling treatment. Thank you Changes!

Taya

2 years ago

Lovely experience! The staff were friendly and helpful. They listened to me about what I wanted and answered all my questions. Naomi was very professional and I was very happy with my consultation. I look forward to returning for my treatment.

Precision matters here

Jaw slimming in Portsmouth requires careful assessment of your muscle size, your facial structure and how much reduction will look proportionate on your face. Too much in the wrong place affects chewing and expression. Our nurse prescribers assess all of this before treating.

This is a prescription-only injectable treatment. It cannot be administered by a beautician.

If you would rather avoid injectables, we also slim jawlines with HIFU.

Many clients combine jaw slimming with anti-wrinkle injections for the upper face in the same appointment, or with dermal fillers for chin definition alongside jaw slimming.

Practitioner assessing a client's face during a consultation

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Common questions

Is it painful?

The injections cause mild discomfort only. Most clients find them very manageable. The treatment takes 15 to 30 minutes in total.

When will I see results?

Results appear gradually over four to six weeks as the masseter muscle reduces in size. Most clients see a meaningful difference by week six.

How long do results last?

Typically three to six months, depending on your muscle activity and metabolism. With regular treatment, some clients find the muscle stays reduced for longer over time.

Will it affect how I chew?

Not when done correctly. We assess your jaw and dose carefully to reduce bulk without affecting normal function. Chewing strength is maintained.

Can it help with teeth grinding?

Yes. Many clients seek jaw slimming Portsmouth specifically for bruxism rather than for cosmetic reasons. Reducing the force the masseter can exert relieves tension and reduces tooth wear.

Can I combine it with other treatments?

Yes. Jaw slimming is often combined with anti-wrinkle injections for the forehead or crow's feet in the same appointment. Some clients also add chin filler via dermal fillers to balance the lower face further.