Botulinum toxin is a substance used for medical purposes for over 50 years. It is produced by a bacterium called Clostridium Bolutinum. Though it is a toxic chemical, it can be safely used for numerous medical and cosmetic purposes when used in small, highly controlled dosages. Its use in the medical field includes treatment of squinting eye, wry neck, inability to close the eyes, and severe muscle spasms. But what made botox so popular is its use in the cosmetics industry as a treatment for facial lines.