Facial aging is rarely caused by just one change. Over time, the skin may produce less collagen, facial volume can gradually diminish and the tissues that once appeared firm may begin to look less defined. These changes can contribute to skin laxity, flatter cheeks, a softer jawline and an overall appearance that may seem more tired or aged.Traditional injectable treatments often focus primarily on one aspect of this process. A hyaluronic acid dermal filler, for example, can replace volume an...