BOTOX is a wrinkle-reducing injection that is commonly used in cosmetic procedures. It is a brand name for a type of botulinum toxin, which is a neurotoxin produced by the bacterium Clostridium botulinum. BOTOX works by blocking nerve signals to the muscles, which prevents them from contracting and causing wrinkles. It is a popular choice for reducing wrinkles on the face, neck, and other areas of the body.