Botox® is the trade name for Botulinum toxin, produced by bacteria called Clostridium botulinum. Botox acts by blocking acetylcholine, a chemical that is responsible for transmitting electrical impulses that cause muscle contraction. This results in temporary muscle paralysis. Botox was first used in 1978 to weaken over active muscles in the eye, which means that we have follow up for over 30 years. It can also be used to prevent and treat wrinkles, migraines and hyperhidrosis (excess sweating).