Why Didn't Botox Work on my Masseter Muscle?

Botox injections to the masseter are tailored to each patient.  There are several reasons why your treatment may not have been effective:

"Imposter Botox"  - There are several versions of botulinum toxin available.  In the United States, two are currently FDA approved, Botox and Dysport.  Beware of other versions of Botox which may be counterfeit, watered down, or "Chinese Botox" which has a track record of unreliable results.

Poor technique- Botox must be injected into the proper location of the masseter muscle.  

Not enough units-  Every patient has a differnent dosage requirement and the treatment must be tailored to your anatomy

Followup treatments- Botox jaw reduction requires a series of treatments with each treatment creating more impact than the previous treatments

Poor Habits-  Patients who continue to chew gum, eat chewy foods, etc, will lead to less impressive results after treatment.

As the other panel member suggested, there are two main factors that may have led to disappointing results.  First and foremost, it would appear that you did not return for subsequent treatments after your initial visit.  Most practitioners will want to re-dose the area within four months of the first treatment.  It's not unusual to have 3 treatments within the first year to achieve optimal results. 

The proper amount of dosing (we start at 25 units each side and titrate up as needed) is vital in relaxing a rather large muscle. 

We would encourage you to not give up on your treatment goals as most patients that undergo this seem quite satisfied with the outcomes.  Do your research and find a practitioner that has experience in this technique and is able to produce before/after photos.