Wrinkles on the forehead form by repeated shrinking and relaxation of the Venter frontalis which moves the forehead. In the case that a person has wrinkles on the forehead, the eyebrow muscles are loose, causing the eyelids to sag, and wrinkles on the forehead would deepen from trying to raise the eyelids with forehead muscle. Getting a forehead lift can remove these wrinkles on the forehead and return you to looking normal.