The corrugator supercilii (also corrugator supercilii muscle, latin: musculus corrugator supercilii) is a small, narrow facial muscle located at the medial end of the eyebrow between the frontalis and orbicularis oculi muscles.
The corrugator supercilii originates from the medial part of the superciliary arch.
The corrugator supercilii penetrates the frontalis and orbicularis oculi muscles and inserts into the skin over the middle of the eyebrow.
Upon contraction the corrugator supercilii pulls the skin of the eyebrow downward and medially and produces vertical wrinkles of the forehead.
The corrugator supercilii muscle is innervated by the temporal branch of facial nerve (CN VII).