Both procedures temporarily smooth facial wrinkles. Botox significantly improves deep facial creases, between the eyebrows, forehead & crow’s feet. It works by diminishing muscle reactions in the forehead and eyebrow regions. Botox injections last approximately three months. Fillers, another option, can be used to fill in fine creases and/or depressed areas around the mouth. They can also be used to add volume to cheek area. There are two different filler options, and they can last up to six or seven months.