Detailed Depiction of the Nasolabial Sulcus in the Female Face

Description

Running from the lateral ala of the nose to the superolateral upper lip, the nasolabial sulcus forms a curving depression that lies anterior to the buccal region and lateral to the philtrum and vermilion border. Medially, the sulcus abuts the alar base and nasal sidewall; inferiorly it approaches the oral commissure and modiolus where several mimetic muscles converge. Beneath the skin, the fold corresponds to tethering within the superficial musculoaponeurotic system (SMAS) overlying the maxilla and the anterior margin of the buccal fat pad. A visible landmark. Clinically, the nasolabial fold is a primary target in facial rejuvenation planning because it reflects both cutaneous creasing and deeper soft tissue descent, not just “smile lines.” Hyaluronic acid filler placement along the pyriform aperture or within the deep medial cheek fat can soften the sulcus, but the angular artery and facial artery course nearby and demand anatomic precision to reduce the risk of vascular occlusion and skin necrosis. Surgical approaches such as midface lift and perinasal suspension also reference this groove when repositioning the malar fat pad and SMAS vectors in female facial aesthetics. Educators can use this artwork in head and neck anatomy teaching to connect surface anatomy with facial expression musculature (levator labii superioris, levator labii superioris alaeque nasi, zygomaticus major and minor) and with the dermal attachments that shape facial topography. It also fits well in dermatology and plastic surgery atlases, patient education on filler risk zones, and cosmetic procedure consent materials where precise naming of the nasolabial sulcus, alar base, and oral commissure reduces ambiguity. Anatomical accuracy verified by SciePro's Medical Advisory Board.