BOTOX® Cosmetic is a prescription drug that, when injected, temporarily paralyzes muscles. It contains a purified and safe form of botulinum toxin A, which is produced by the microbe that causes botulism. Manufactured by Allergan, Inc., it is used to treat permanent furrows and deep wrinkles in the skin that are formed by the continual contraction of facial muscles. In addition to its cosmetic applications, it is used to treat a number of medical problems, including excessive sweating, overactive bladder, neck spasms, crossed eyes, chronic back and jaw pain, and migraines.