Reality: "Botox is derived from botulinum, the toxin found in botulism. Perception: Botox injected into the skin will magically erase wrinkles. ... Botox is a toxin. The muscle is reacting (or not reacting, as they case may be) to a foreign substance, which it finds toxic.Mar 5, 2008"
It's a neuromuscular blocker that causes paralysis. People die of botulism because their respiratory muscles can't work and they can't breathe.