Nasolabial fold
Two skin folds in the face
Nasolabial fold
The nasolabial folds, commonly known as "smile lines" or "laugh lines", are facial features. They are the two skin folds that run from each side of the nose to the corners of the mouth. They are defined by facial structures that support the buccal fat pad. They separate the cheeks from the upper lip. The term derives from Latin nasus for "nose" and labium for "lip". Other people suggest the term melolabial fold, or the lip-cheek fold or groove. It is also known as the nasolabial sulcus.
Read on Wikipedia · Image Mikael Häggström, from original by Sue Campbell/U.S. Air Force, Public domain
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