The concept of the vanishing mediator is basically a theory concentrating on a mediation that ceases when its task is complete. However fundamental its function is, it still has nuances that are, when juxtaposed altogether, quite differing. What I intend to do in this paper is to develop the concept to be utilized as a theoretical framework for further researches. To do that, I will: 1) succinctly clarify theory both in its essence and its being a concept through symbolic logic; 2) review related literature and tabulate the recently cited related works on the vanishing mediator; 3) frame a structure or methodology and discuss its nuances based on the common references strategically extracted; 4) attempt to develop a refined version of it and its process through synthesis; and later, 5) present areas or topics in some selected disciplines where the concept can be applied as conclusion.