I’m Korean and I have a bulbous nasal tip with a low but wide bridge. I understand that this will require some type of implant. What is the best implant to use, goretex, silicone or my own cartilage?

I prefer to use your own cartilage. The source of that cartilage may be the nasal septum, the ear, or the rib. I prefer your own cartilage over silicone because of the potential for infection of that silicone, potential for erosion of the skin overlying the silicone implant, and/or shifting of that implant.