BOTOX (botulinum toxin type A) comes from the bacteria Clostridium botulinum, which produces a toxin that contains 7 distinct serological types. Botulinum Type A is the most potent and is marketed by Allergan as Botox. Type B is marketed by Elan Pharmaceuticals as Myobloc and is FDA approved for cervical dystonia.
Other competitors have continued to populate the cosmetic market and work the same way as including Dysport (abobotulinumtoxinA), initially marketed as Reloxin, Daxxify, Jeuveau, and XEOMIN (incobotulinumtoxinA). These are both Type A Botox, but with less protein binding, and work in the same way as BOTOX Cosmetic with slight differences in dosing, diffusion, and onset of action. All products (with the exception of Daxxify which may last longer) have the same duration of 3-6 months, so the main benefits of having newer BOTOX products available for cosmetic use is to help keep pricing competitive among companies and consumers.