Botox, as it is popularly known, is a purified form of the botulinum toxin A. It is most famous for its use for the prevention of wrinkles in the cosmetic beauty industry. Botox works by preventing the nerves that help muscles to contract by blocking them. This results in softening the appearance of wrinkles. It is most effective on wrinkles that have not become permanent for example, the wrinkles that appear when one frowns, and smiles and so on.