When using Botox® injections for wrinkles, a cosmetic surgeon will inject a miniscule amount of a purified protein toxin into a facial muscle using a very fine needle. A few days after the Botox® injections, wrinkles and creases will begin to soften and often will disappear completely. This effect will typically last three or four months. After the effects diminish, the process can be repeated. Many patients require less frequent Botox® injections over time. Botox® injections for wrinkles act upon the muscle beneath the skin. The toxin works by preventing nerve impulses from reaching the muscle, forcing it to relax. Since the muscles can no longer contract, the frown lines associated with each muscle are reduced.
Complications from these injections to the upper eyelid include occasional bruising from the injection itself, and a temporary drooping of the eyelid (which rarely occurs) after frown line injections. The injected medication is used in extremely small amounts and does not spread throughout the body so you can return to full activity immediately.
Although the product can be used by almost anyone, patients who are pregnant, breastfeeding or who have a neurologic disease should not use it.
New uses for Botulinum toxin include reduction in sweating of hands and armpits (hyperhydrosis) and relief of headaches.