Botox for Bruxism - As a Side Effect Will This Also Slim the Face?

It is common to have Botox injected in the muscles of mastication as part of the treatment for bruxism (teeth grinding).  It is unlikely that the dose you mention will cause any significant changes to your facial contour.

Alternatives include the option of wearing a mouth-guard generated by your dental specialist.  Of course you must remember to wear it consistently in order to have it be effective, and compliance with this is challenging for a number of people.  

A proper evaluation including an examination a Board-Certified specialist can help determine what the appropriate next steps can and should be.

Thank you for your question. It is possible that Botox may slim down your jawline and 25 units per each side is not a big dose. I would recommend consulting under a Board Certified Dermatologist or Plastic Surgeon for safest and best treatment option. I hope this helps.

From the amount you've had injected, I wouldn't think you'd have any significant change in the size of your masseter muscles. Typically the doses are much larger for masseter reduction and 20 Units per side (or around that amount) is indicated for TMJ and/or bruxism.