title: The Science and Theory behind Facial Aging.
abstract: The etiology of age-related facial changes has many layers. Multiple theories have been presented over the past 50-100 years with an evolution of understanding regarding facial changes related to skin, soft tissue, muscle, and bone. This special topic will provide an overview of the current literature and evidence and theories of facial changes of the skeleton, soft tissues, and skin over time.
authors.affiliation: Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Tex.
authors.forename: Jordan P
authors.initials: JP
authors.lastname: Farkas
authors.affiliation: Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Tex.
authors.forename: Joel E
authors.initials: JE
authors.lastname: Pessa
authors.affiliation: Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Tex.
authors.forename: Bradley
authors.initials: B
authors.lastname: Hubbard
authors.affiliation: Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, Tex.
authors.forename: Rod J
authors.initials: RJ
authors.lastname: Rohrich