Botox is an excellent treatment for wrinkles and lines of aging in the upper third of the face, including the forehead, brows, and crow’s feet areas. Botox injections can give a youthful elevation to eyebrows and can also be used in some areas around the mouth, and in the neck. Botox is injected into the muscles that cause the lines. Within three days after your Botox injections, the muscles are weakened, and by 10 to 14 days, the lines will fade and give way to smoother younger looking skin. The effects of Botox usually last from three to five months depending upon the patient.