The aim of this study was to evaluate the facial soft tissue changes following hyaluronic acid dermal filler injection. The study included 10 adult females with retruded chin, subjected to hyaluronic acid dermal filler injection, sample was collected from the outpatient clinic of the orthodontic department, Cairo university. It was concluded that the angular photogrammetric measurements showed a highly statistically significant facial changes after hyaluronic acid dermal filler injection