Is there a permanent alternative to slim the masseter muscle besides using Botox?

Face slimming is very popular and it workers when done well. Yes, it is temporary but the results still cast up to a year.When permanent reduction of masseter and the bone is considered, one needs to know that there are very significant potential side effects affecting nerves, muscle, bone and skin. It is reasonable to see facial surgeons but be aware of these signidicant risks.Best regards, Dr. Sapijaszko.

I suggest seeing a maxillofacial surgeon for internal muscle treatment, otherwise consult with an experienced facial plastic surgeon for jaw reduction surgery. Best, Dr. Emer.

The masseter muscle can be surgically reduced in size. Occasionally, a piece of bone from the angle of the mandible is also removed if contributing to a wide face. The surgery will result in several weeks of swelling and bruising and requires a liquid diet for the first few days. The surgery and recovery costs may not be worth it to some and Botox is used instead. 

There are surgeries that can reduce your masseter.You can google masseter reduction surgery.They are big operations, so Botox is preferable by many.

Reducing the masseter involves typically thinning a part of the masseter that attaches to the angle of the mandible.as well as removing part of the angle of the bone.  We do this completely intraorally with no visible external scars.  Best wishes.