Hyaluronic Acid Filler Longevity and Localization: Magnetic Resonance Imaging Evidence

Summary: Hyaluronic acid is the most commonly used facial dermal filler in aesthetic medicine. Identification of placement, longevity, and localization of hyaluronic acid fillers are becoming increasingly important. This article proposes a practical approach to monitoring the location and longevity of hyaluronic acid, using magnetic resonance imaging. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, V.