Toxin for Jawline Slimming / Teeth Grinding

The masseter is one of the main chewing muscles, with the bulk of the body sitting at the angle of the jaw on each side of the face. In some people, it becomes enlarged through genetics, frequent clenching or teeth grinding, which can make the lower face look broader or more square.
When this muscle is overactive, it can affect both comfort and facial shape, sometimes causing migranes. Carefully relaxing the masseter can help reduce jaw tension and, over time, soften the width of the lower face in suitable clients.

Masseter treatment uses carefully placed anti-wrinkle injections to relax an overactive jaw muscle. As the muscle stops working quite so hard, it can gradually reduce in bulk, helping to soften a square lower face and create a more refined jawline in suitable clients.
This is not instant contouring, and it is not about changing your face into someone else’s. The best results look like a subtle edit: less tension, less heaviness through the jaw, and a softer lower-face shape that still looks completely like you.

Masseter treatment may suit people who grind their teeth, clench their jaw, or carry tension through the lower face. Many clients search for this kind of help using phrases like TMJ, temporomandibular joint pain, teeth grinding treatment, jaw clenching treatment or masseter muscle treatment.
The important distinction is that the temporomandibular joint itself is the jaw joint, while the masseter is one of the powerful muscles that works around it. If your concern is mainly overactive muscle, jaw tension, clenching or a wider-looking lower face, carefully relaxing the masseter may help soften tension and reduce bulk over time.

A square or heavy-looking jaw is not always caused by the masseter muscle. Sometimes the width comes from bone structure, facial fullness, skin laxity or a higher level of body fat, which means masseter treatment may not give a dramatic slimming result.
That is why we assess you properly in clinic before prescribing treatment. We feel the muscle, look at how your jaw moves, and only recommend treatment if we believe it is genuinely likely to help.

Most clients find masseter treatment very easy. The area is not usually as sensitive as the lips or under-eyes, so numbing cream is not normally needed.
You may feel a tiny pinch or quick flick against the skin, but the needles we use are extremely fine and the treatment itself is fast. For most people, it is one of the easier injectable treatments to have done.

Masseter treatment is gradual. Jaw tension and clenching may start to feel easier after 3 weeks, while visible slimming usually takes longer because the muscle needs time to reduce in size.
Most clients notice the best change over several weeks, with results often lasting around three to six months. Some people choose maintenance appointments to keep the muscle relaxed and the lower face softer over time.