Botox is a brand of botulinum toxin type A produced by Allergan. It is widely used for both cosmetic and medical purposes. Cosmetically, Botox is injected into facial muscles to reduce wrinkles and fine lines by temporarily relaxing them, providing a smoother, youthful appearance. Medically, it is used to treat conditions such as chronic migraines, muscle spasms, excessive sweating (hyperhidrosis), and overactive bladder. Botox works by blocking nerve signals to muscles, preventing contractions for a temporary period. It is one of the most well-known and widely used botulinum toxin products worldwide.