Filler or Hyaluronic Acid (HA) is a component of our skin collagen. Working as a skin spring, it keeps the dermis (top layer skin) firm. After we turn 20 years old, collagen will start to deteriorate. As our spring becomes less elastic, the skin collapses, which causes wrinkles and aging appearances. The Filler helps remove deep wrinkles and facial imperfections by filling and creating a dimensional shape. If treated by experienced dermatologists, it is safe and naturally dissolved within 9-12 months.