Botulinum toxin is the most popular nonsurgical cosmetic procedure and with good reason. It works by minimizing muscle activity and provides temporary paralysis to the muscles it is injected into. It does so by interfering with the underlying muscles’ ability to contract, which allows for existing wrinkles to smooth out. And even though results from the anti-wrinkle injection treatments only last three to four months, it is still the go-to injectable treatment and gold standard for smoothing out facial wrinkles. Botulinum toxin comes in three brands, (Botox, Dysport, and Xeomin).