What are the surgical and non surgical options for reducing masseter muscle mass?

I have trained in Botox use but I do not use it because it is a dangerous neurotoxin that can spread to first and second order neurons in the brain.

I suggest you look into correction of underlying causes of mandibular hypertrophy.

You did not complain about pain or TMD issues but only about the cosmetic appearance of the muscles.

Normally,I suggest neuromuscular approach to treatment which frequently eliminates clenching and overuse of masseters that causes hypertrophy.

My practice primarily focuses on the pain aspects of treatment.