Nope. Neurotoxins like Botox have a specific effect on the neuromuscular junction (the space between muscles and their "motor" nerves). As such, there is no effect on the sensory nerves. Interestingly, sweat glands are also effected by Botox because they have the same signalling mechanism as the neuromuscular junction - thus it can reduce sweating in treated areas. Hope this helps!
No effect. No effect on facial sensation.
No. It only paralyzes the muscle and it will not move and loses it 's tone for about 3 months .It will then recover full muscle tone and movement .
Yes. Sometimes deadens sensory nerves.