Which muscle is located under the eyebrows and controls brow movement?

The muscle located under the eyebrows that controls brow movement is the corrugator muscle. This muscle is responsible for drawing the eyebrows downward and together, creating vertical furrows, often associated with frowning or deep concentration. Understanding the function of the corrugator is important in esthetics, as treatments aimed at reducing the appearance of frown lines may involve addressing this specific muscle.

In contrast, the levator palpebrae superioris primarily elevates the upper eyelid, the procerus helps to pull the skin between the eyebrows down, and the quadratus labii superioris is involved in elevating the upper lip and does not influence brow movement. Each of these muscles serves distinct facial functions, highlighting the unique role of the corrugator in controlling the positioning of the eyebrows.