What is botulinum toxin type A?

The cosmetic form of botulinum toxin, sometimes referred to as "Botox" by patients, is a popular injectable that temporarily reduces or eliminates facial fine lines and wrinkles. The most commonly treated areas are frown lines, forehead creases, crow's feet near the eyes. Several other areas have been treated such as thick bands in the neck, thick jaw muscles, lip lines and gummy smiles.