Can a DDS in Minnesota Be a Medical Director for an R.N. to Do Botox, Laser Treatments, Chemical Peels, Etc in a Hair Salon?

If your injector injected into the frontalis, rather than the lateral obicularis, you wouldn't get a "lift," but a slight droop, especially with too much product. It's not difficult to obtain (the lift) if the injection sites are precise.

I have considerable experience using Botox for aesthetic purposes, having started doing so in 1991, eleven years prior to its official FDA-approval for this purpose. Throughout that time, from time to time, I have encountered individuals who had at first responded well to treatment, but who,...

Botox injections wouldn't cause small pimples around the injection site two weeks post-treatment. It sounds like you're having a reaction to a topical treatment. Evaluate what is different or has changed and visit a dermatologist for further assessment.

Flat out, you don't need 80 units of BOTOX.  This will totally paralyze your forehead.  A frozen look will be very unnatural and inauthentic.  $12 per unit of BOTOX is not unreasonable.  More experienced injectors can charge much more for their treatments with top injectors...

I am not aware of any permanent cure for masseter hypertrophy, other than stopping any habits that might be the cause of it.  If you haven't already, I would recommend seeing an oral surgeon to see if there might be any options for you.  

It probably won't slim down significantly. When you're sleeping, there is no way to know if you've stopped clenching unless you're wearing a guard to prevent this.