Corrugator Supercilii Muscle Beneath the Dermal Layer, Anterior View

Description

Across the anterior forehead and superior orbital region, the dermal layer is rendered translucent to expose the corrugator supercilii deep to the medial eyebrow, arising near the medial end of the superciliary arch and coursing superolaterally toward the skin of the brow. Medial to it sit the glabellar soft tissues over the nasion, while the frontalis lies superiorly in the forehead and the orbicularis oculi encircles the palpebral fissure laterally and inferiorly. Superficial facial landmarks, including the eyebrow hairs and upper eyelid margins, help orient the muscle’s position relative to the superior orbital margin. Small but diagnostic. Corrugator supercilii is the main “frown” muscle, drawing the eyebrow inferomedially and creating vertical glabellar rhytids, a pattern that contrasts with frontalis-driven horizontal forehead lines. That distinction matters in aesthetic medicine and reconstructive planning, because botulinum toxin injection points must respect the medial brow depressors (corrugator and depressor supercilii) to avoid brow asymmetry or unintended eyelid heaviness. Surgeons also use this anatomy when approaching the medial brow and forehead, where the supraorbital and supratrochlear neurovascular bundles emerge near the superior orbital rim and can be irritated, entrapped, or inadvertently injured. Facial anatomy instructors can place this figure directly into a head and neck module to teach layered dissection of the eyebrow region and the mechanics of expression, from resting tone to maximal corrugation. It also fits well in dermatology and plastic surgery materials discussing glabellar line treatment, injection mapping, and complication avoidance around the medial canthus and superior orbital margin. Anatomical accuracy verified by SciePro's Medical Advisory Board.