Hyaluronic Acid/Dermal filler is a natural substance found in the body, and high concentrations can be found in skin. As we age we lose hyaluronic acid which can be replenished using dermal fillers. We inject dermal filler using either needle or micro-cannula depending on the area being treated. Dermal filler can last anywhere between three to eighteen months depending on various factors such as type of filler, area treated, lifestyle and age.