Lower lip augmentation by filler injection is an aesthetic procedure essential for achieving a feminine look and to enhance attractiveness.

Complications as a result of injury to the inferior labial artery can result in undesirable outcomes.

The origins and courses of the inferior labial artery are classified into 5 types.

These types are often found in combination with each other in different faces, resulting in large anatomical variation between people.

Types of combination influence severity of lower lip necrosis when arterial injury occurs. The physician should be aware of these anatomical variations during aesthetic treatments and reconstructive procedures to avoid the dangers of accidental arterial injury.