Quick answer
Does masseter Botox slim the face?
When jaw width comes from a large chewing (masseter) muscle, Botox can relax and gradually reduce the muscle, which may slim the lower face over several weeks. If width comes from bone, results are limited. The simulator previews a slimmer jaw on your photo.
Wide jaw: FAQ
Can masseter Botox help with teeth grinding?
It's sometimes used for that. A dentist or doctor can advise whether it's appropriate for you.
Written by the AI Beauty Simulator Editorial Team · Medical review in progress · Updated 29 September 2026