Background: Platysma prominence (PP) is a sign of aging in the lower face and neck characterized primarily by a blunting of the jawline and the presence of vertical banding along the anterior and posterior margins of the muscle on one or both sides of the neck. The aim of this review was to combine findings from the literature on topics relevant to PP with expert perspective to help guide clinical decision-making in assessment and treatment., Methods: A review of the literature focusing on platysma muscle anatomy and function; PP signs, characteristics, causes, clinical severity, and aesthetic and psychosocial effects; and treatment options for PP was performed and summarized. Expert clinical perspectives of these findings elucidated from the authors' experience were used to develop considerations for the evaluation and treatment of PP., Results: PP is an aesthetically undesirable condition that is bothersome to affected individuals and has negative effects on quality of life and psychological and emotional well-being. Knowledge of platysma muscle anatomy, proper patient assessment, and considerations in the use of onabotulinumtoxinA for the treatment of PP, including selection of the appropriate candidates and careful dosing and injection techniques, can produce consistent results with limited adverse events, potentially enhancing the patient's quality of life., Conclusions: PP is a bothersome condition with a detrimental impact on patient quality of life and psychological and emotional well-being. OnabotulinumtoxinA is a nonsurgical treatment option with a record of safe, consistent results in treating PP., Competing Interests: Dr. Bertossi is an investigator for Allergan Aesthetics, an AbbVie Company. Dr. Braz is a speaker, advisor, and investigator for Allergan Aesthetics, an AbbVie Company. Dr. Carruthers is a consultant and researcher for Alastin, Appiell, Allergan Aesthetics, an AbbVie Company, Avari, Bonti (Allergan Aesthetics/AbbVie), Evolus, Fount Bio, InMode, Inverse Genomic Ltd, Jeune Aesthetics, Merz, Revance Biopharma, and Object Pharma, is an author and an editor for Elsevier, an author for “Up to Date” on neuromodulators and fillers, an assistant editor for Dermatologic Surgery, and a reviewer for Aesthetic Surgery Journal, Ophthalmic Plastic and Reconstructive Surgery, and Plastic and Reconstructive Surgery. Dr. De Boulle is a key opinion leader and speaker for Allergan Aesthetics, an AbbVie Company, and has received grants and honoraria from AbbVie. Drs. Dimitrijevic, Shimoga, and Hopfinger are full-time employees of AbbVie. Dr. Trindade de Almeida is a speaker, consultant, and researcher for Allergan/AbbVie and Merz and a consultant for Galderma. The other author has no financial interest to declare in relation to the content of this article. Allergan Aesthetics, an AbbVie Company, funded this study and participated in the study design, research, analysis, data collection, interpretation of data, reviewing, and approval of the publication. All authors had access to relevant data and participated in the drafting, review, and approval of this publication. No honoraria or payments were made for authorship. AbbVie is committed to responsible data sharing regarding the clinical trials we sponsor. This includes access to anonymized, individual, and trial-level data (analysis datasets), as well as other information (eg, protocols, clinical study reports, or analysis plans), as long as the trials are not part of an ongoing or planned regulatory submission. This includes requests for clinical trial data for unlicensed products and indications. These clinical trial data can be requested by any qualified researchers who engage in rigorous, independent, scientific research, and will be provided following review and approval of a research proposal, Statistical Analysis Plan, and execution of a Data Sharing Agreement. Data requests can be submitted at any time after approval in the United States and Europe and after acceptance of this manuscript for publication. The data will be accessible for 12 months, with possible extensions considered. For more information on the process or to submit a request, visit the following link: https://vivli.org/ourmember/abbvie/ then select “Home.”, (Copyright © 2025 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of The American Society of Plastic Surgeons.)