A heavy or overly square jawline can make the lower face look wider or more tense, and for many people it comes from enlarged masseter muscles due to genetics or years of clenching and grinding.
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At 4Ever Young STL MedSpa in Creve Coeur, MO, you can get a slimmer, more refined jawline without surgery.
Jaw tension and teeth grinding put constant strain on the muscles and joint that let you chew and talk.
A heavy or overly square jawline can make the lower face look wider or more tense, and for many people it comes from enlarged masseter muscles due to genetics or years of clenching and grinding. At 4Ever Young STL MedSpa in Creve Coeur, MO, Botox jaw slimming softens and slims the jaw without surgery by relaxing those muscles. Our founder and lead injector, Alina McCann, MSN, APRN, AGNP, tailors the dose to your anatomy. If you have been searching for jaw slimming or masseter Botox in Creve Coeur or a med spa near St. Louis, this is a non-surgical way to refine your lower face.
One of the main causes of a square or enlarged jawline is enlargement of the masseter muscle, which is the primary muscle responsible for chewing.
Over time, the masseter muscles may become larger from:
Many patients grind or clench their teeth during sleep without realizing it. As the masseter muscles become stronger and larger, the jawline may begin to appear wider, heavier, or more angular.
Some patients also notice:
For some women, especially patients genetically predisposed to a stronger jawline, softening the masseter muscles may help create a slimmer and more oval facial shape.
Botox has become one of the most popular non-surgical treatments for reducing the appearance of a square jawline.
When Botox is injected into the masseter muscles, it helps relax and weaken excessive muscle activity. Over time, the muscle gradually becomes smaller, creating a slimmer and softer lower face appearance.
Botox jaw slimming may help improve:
Because the treatment focuses on reducing muscle size gradually, results develop progressively over time rather than immediately after injections.
The masseter muscles become enlarged through repeated muscle activity and tension. Botox helps reduce this muscle activity by temporarily blocking the nerve signals responsible for muscle contraction.
As the muscles relax and become less active, many patients notice:
Treatment is performed conservatively to maintain normal chewing and bite strength while improving facial contour naturally.
Square jaw treatment with Botox is performed in the office and usually takes less than 30 minutes.
Small amounts of Botox are carefully injected into the masseter muscles on each side of the jaw.
The procedure requires minimal downtime, and most patients return to normal daily activities shortly after treatment.
While some patients notice improvement in muscle tension relatively quickly, visible slimming of the jawline develops gradually as the muscles reduce in size over time.
Most patients begin noticing improvement within several weeks following treatment, while full slimming results may continue developing over several months.
Botox treatments are commonly repeated every 3 to 4 months during the first year to help maintain consistent muscle reduction.
Some patients notice long-term improvement in jaw clenching and lower face contour with continued treatment over time.
Many patients choose Botox jaw slimming because it offers:
For patients seeking improvement in lower face heaviness or a more balanced facial shape, Botox jaw slimming can provide a non-surgical alternative to invasive jaw reduction procedures.
Jaw slimming is priced by the amount of Botox needed, which depends on how strong your masseter muscles are. Current pricing is on our price guide, and we confirm at a consultation.
Because the muscle relaxes gradually, we plan a series of treatments for the best long-term slimming. Book a consultation for a plan and price, or call us with any questions.
[Botox](/treatments/non-surgical-jaw-reduction) relaxes the masseter muscles, which then gradually shrink from reduced activity, softening a square or heavy jawline over a few weeks.
Yes. The same masseter Botox that slims the jaw also eases clenching and grinding, so many patients get both benefits. See our [TMJ treatment](/treatments/tmj) page.
Most patients notice slimming within a few weeks as the muscles relax, with the full effect over one to two months.
Results typically last three to four months at first. With repeat treatments, the muscle often stays smaller longer.
Yes, when performed by a trained medical injector who places the Botox precisely in the masseter. We assess your anatomy first.
Cost depends on the amount of Botox needed. See our [price guide](/pricing), and we confirm at a consultation.
Book online in about a minute, or call and we will talk it through first. Either way you will know the price before anything starts.
