Common ones are silica gel, swelling and autologous cartilage. The relationship between silicone and our organization, just like the relationship between glass and glass, is always sliding, so silicone rhinoplasty often deforms. Light bulbs and tissues have a certain Zhang Heli, just like walls and wallpaper. It will peel off with a slight movement, and it is not difficult to take it out, so it is better than silica gel. The relationship between our cartilage and our tissue is like the relationship between steel bars and cement, which are fused together and become a whole. They move together, there is no relative movement, there is no friction to the skin, and there is no thinning or cracking of the skin, which is very safe.