In order to tell patients how to perform a brow lift you have to know the anatomy of the muscle which are being paralyzed below the skin. The large muscle in the forehead is called the frontalis. It extends from your hairline down to past your eye brows. The purpose of this muscle is to raise the brows so any botox placed in it will actually cause the brows to drop. The glabella has a fee muscles in it, the most important being the corrugator supercillii this muscle depresses the central portion of the brow near the nose. Paralyzing this muscle causes a slight medical brow elevation. The last muscle is the orbicular occuli. This is a circular shaped muscle which goes around the entire eye. It is the muscle being used when you squint and is responsible for the crows feet. This muscle also pulls the brow down when activated. If injected with botox near the eye brow, the muscle is weakened and causes a brow elevation. When I perform brow lifts, I inject the glabella to elevate the medial brow and the orbicularis to elevate the lateral brow. So there you have it, a crash course in facial anatomy!