Prosthetics are products used in three dimensional makeup which are fabricated in advance and adheared onto the skin when needed. The are most often made through the techniques of casting or buildup. For the sake of realism, it is important that the edges of a prosthetic be as thin as possible so it may be invisibly blended onto the skin. After a prosthetic is attached, further makeup, often stippling may further hide the edges of a prosthetic. In general, a prosthetic may be interchangibly be referred to as an appliance or a prosthetic appliance.