The skin behind the nose and the tip of the nose is red and shiny. It is mainly caused by the long-term stimulation of the prosthesis to the skin on the back of the nose. The degree of skin irritation is related to the following factors: the thicker the prosthesis, the more obvious the irritation to the back of the nose, especially for those guests with thin skin, choose a soft prosthesis that is not too thick. Also, when carving the prosthesis, the back of the nose is carved too steep, which leads to excessive local pressure, which affects local blood circulation and causes local redness and swelling.