The injected hyaluronic acid comes from biological tissue, so human skin tissue will not be rejected, which is very safe and has no side effects. The effect of hyaluronic acid pad chin can last up to half a year. It needs to be injected again after half a year, because hyaluronic acid is easily absorbed by the human body. As long as you persist for a period of time, you can get a new chin, which is also the advantage of hyaluronic acid pad chin. Generally speaking, the effect can last for one year, and it will be longer if the doctors in the hospital are experienced. For example, in Shenzhen, the experience of micro-plastic surgery in Hsi Chin, Shenzhen is very good. It has been done for nine years, and the effect is basically guaranteed. Go and get to know it.