BOTOX is a purified protein adminstered in a simple nonsurgical procedure that temporarily improves the appearance of moderate to severe frown lines between the brows in people aged 18 to 65. During treatment, very low doses of BOTOX Cosmetic are administered via a few tiny injections directly into the muscles that cause those stubborn lines between the brows. Frown lines are caused by overactive facial muscles. BOTOX Cosmetic treatment is quick and minimally invasive. The entire procedure takes approximately 10 minutes.  Discomfort is minimal and brief. You may resume normal activity immediately.