Also known as botulinum toxin type A, it works by blocking the signal from the nerve to the injected muscles so it can no longer contract (tighten) as forcefully. This in turn causes wrinkles to relax and soften.
As people age, their skin gets thinner, drier, and loses elasticity. This leads to wrinkles, creases, and fine lines on the skin. Facial expressions such as frowning and smiling also contribute in wrinkle formation.
Botulinum neurotoxin works as a muscle relaxant which makes it effective at improving such expression lines (both static and dynamic).
When injected strategically, botulinum neurotoxin can be used to provide lifting and smoothing effects where required.