Botox is also called botulinum toxin. It is very effective in the treatment of wrinkles and crows feet.

The effects of current botulinum toxin injections for glabellar lines ('11's lines' between the eyes) typically last two to four months, although this is patient-, and in some cases, product-dependent, with some patients experiencing a longer duration of effect. Injection of botulinum toxin into the muscles under facial wrinkles causes relaxation of those muscles, resulting in the smoothing of the overlying skin.Smoothing of wrinkles is usually visible three-five days after injection, with maximum effect typically a week following injection.Muscles can be treated repeatedly to maintain the smoothed appearance