Subjective facial dynamics with the use of hyaluronic acid dermal fillers formulated for facial movement and expression

Background: Not only do patients want to look younger and more attractive, patients also want to maintain a natural look following rejuvenation treatments that don't alter their facial expressions. Hence, it becomes increasingly important to assess facial dynamics as results that appear natural at rest may appear unnatural with expression. An open-label clinical study was conducted to evaluate the perception of the naturalness of facial expressions in motion following correction of wrinkles and folds in the lower face.