After Botox for masseter muscle wears off, will my jaw return to my pre-injected state?

I appreciate your question and your concern. Botox is a neuromodulator that works by relaxing muscles to achieve a desired effect. Most of the time, Botox is used as an anti-wrinkle treatment, but it is also effective in relaxing a masseter muscle that has become enlarged by overuse. When the muscle becomes inactive, it also reduces in size, leading to subtle slimming of the jawline. It will not significantly impact the overall shape of your face; just make it a bit narrower. I would suggest starting with a relatively low dose to see how your muscle responds. I’ve seen patients from other providers with too high a dose, resulting in an overly dramatic change.
Botox injections take full effect in about two weeks. However, with the masseter slimming, it can take up to one month to see a pretty but subtle contouring. Those results will last three to four months. As they wear off, your muscle will become fully active once again and return to its original state. If you like the effect, you will need to schedule regular touch-up sessions to maintain it. Make sure the doctor you work with is board certified with expertise in using Botox in this area to ensure an optimal outcome. 

Yes, the results will wear off after 3-4 months after treatment and you will return to your original state. Keep in mind botox does prevent wrinkles long term and will inevitably delay the aging process. Bet, Dr. Emer. 

Thank you for your question. Botox is a neuromodulator that relaxes the masseter muscle, which also produces a subtle reduction in its size. This can offer slimming of the lower jawline that is restricted to exactly where the muscle is located. Botox injections offer temporary improvement and the results usually wear off within three to four months. At this time, you would need to schedule another treatment to maintain your new look. If you don’t have more treatments, the jawline will return to its same appearance before the procedure. Botox is not known to cause any long-term side effects.

Botox injected into the masseter muscle will slim the appearance of the face where these muscles are located (the sides of the face).  Botox is considered to be in full effect two weeks after injection and will gradually wear off over 3 to 4 months.  At this time the face will return to its previous appearance.

Thank you for your question. Botox is used to slim down enlarged masseter muscles and when injected it will provide the sides of the face with a slimmer appearance.