Expression lines and wrinkles are caused by smiling, laughing, frowning and squinting. Expression lines are those lines in the corners of the eyes, on the forehead and in the middle of the brow. Now, thanks to Botox you no longer have to worry about your worry lines!!! Botox can relieve these lines and wrinkles by relaxing the underlying muscles. Once the muscles injected with Botox are relaxed the skin smoothes out within 3- 14 days. At last, one less thing to worry about!!