How long does Botox take to work in the masseter muscles? I have thick masseter muscles and i want to get some botox injections on each side to reduce them, can anyone possibly tell me about how long after the injections will they really shrink down? i have heard that it takes months to work from some people and then from others it just takes days, thanks for the answers.
How Long Does Botox Take to Work in the Masseter Muscles?
Doctor Answers (14)
Botox for masseter muscle
Botox begins working in 3-5 days with maximal effect towards 2 weeks and duration of effect around 4 months. For the masseters, a very strong muscle group, the effects will take likely 6-12 months to see them shrink down.
Masseter muscle reduction - timing, effectiveness and onset of action
Botox works well for masseter muscle reduction and starts to work immediately - BUT muscle bulk reduction will take 4-6 months and also will require at least 2-3 sessions of treatment. It is expensive because it requires a large # of units of Botox.
Botox Effect on Masseter Muscles
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Masseter Reduction with Botox
Masseter reduction occurs over months to years, although the Botox begins to work in several days to a week.
Botox in the Masseter Muscles
You should see a slight improvement in the masseter muscle area a few days after Botox injections. For the full effect, it could take a few months due to the size of the muscle. I recommend keeping up with injections every 4 months to maintain the slimming appearance. This is a wonderful treatment option for patients who are looking for a non-surgical approach to improve the appearance of their cheeks and jaw. I hope this helps.
Botox to masseter muscles
Botox can take from a few days to two weeks to start working. For masseter reduction, it is dependent upon number of units you were treated with and what sort of expectations you have and discussed with your provider. It can take several months, and you need to continue treatment to maintain the reduction.
Botox for the masseters
It can take several months to see the full effect of Botox injections on the masseter muscles. You may require a second treatment at that time and then the effect may last a year or longer.
Generally changes after a month
The Botox will take effect within 2 weeks after injection. Once the masseter muscle has completely relaxed, the reduction of the muscle will occur over the following 2-4 weeks. Most patients notice changes at the 1-2 month follow up.
Repeat treatments help to maintain results and prolong duration of effect.
Botox for masseter reduction
You will notice a reduction in muscle activity at ~3 days after the injection, and will see maximal effects at ~7 days after injection. Depending on the dosage administered, you may have residual masseter activity even when the Botox or Dysport is fully active. Especially in patients with very large masseters, it may take a two or more treatments with Botox or Dysport to achieve the maximal result. Re-treatment at 1 month after the initial injection works well to reduce residual activity.
Long-term muscle atrophy and size reduction will be noted after serial treatments with Botox/Dysport. The initial loss in size will simply come as a result of the muscle's inability to contract.
These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.