Background: Kinetic energy of a liquid jet has been demonstrated to achieve clinical efficacy by injecting hyaluronic acid for skin thickening and improving facial sagging. A pneumatically accelerated jet penetrates the epidermis leaving HA particles spherically spread in the dermis and initiating microtraumatic wound healing.
Method: We reported retrospective analysis of our successful experience in improving rhytidosis and skin remodeling in the middle and lower facial regions by pneumatically administered HA filler.