Botox is a brand of Botulinum toxin which is used cosmetically to improve wrinkles and fine lines on the face. Other brands of Botulinum toxin such as Xeomin are used as well, but as a group they are commonly referred to as botox. Botox works as a neurotoxin that weakens underlying muscles. In addition to being helpful for achieving a more youthful appearance, botox is able to reduce muscle triggers that lead to headache or neck and jaw pain. Botox can also be used to reduce excess sweating under the arms. Although not everyone responds to botox injections, it is generally a very safe and effective procedure.