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 ...
Botox and neurotoxins are effective for the temporary relief of excessive sweating. I would suggest a trial treatment to help your condition. Best, Dr. Karamanoukian Los Angeles
Asymmetry is common. Based on the photo's you've provided, you should address your specific concerns with your provider, however, accepting some minor "imperfections" or subtle differences in your facial characteristics might be in order.