“…Aging produces changes in the lower third of the face: the labio-mandibular groove, the jowl, prejowl, and a diffusion of the mandibular angle. [1][2][3][6][7][8]13,19,[22][23][24][25] With age, the roof of the premasseter space becomes looser, while the anterior and inferior boundaries lose firmness and their retention capacity. 1,2,12,[26][27][28][29] When added to the weakening of the mandibular septum, these changes drive the migration of the premasseter space in the caudal-medial direction, producing the jowl that becomes the first V of the W. 1,2,12,16,[26][27][28][29][30][31][32] The mandibular angle increases during aging due to loss of volume and a weakening of the platysma-auricular ligament, thereby creating the second V of the W. 1,2,[16][17][18][19][20][33][34][35]…”