This paper aims at offering a concise, yet systematic, presentation of the Husserlian method of "self-variation" in connection to eidetic variation sic et simpliciter. After a brief review of the different meanings of this method in Husserl's writings, I will focus on the way in which Husserl employs it to bring the eidos "ego" to the fore.
To this end, I will take into account the specific subject matter of self-variation (the "concrete" ego) by resorting to a twofold concept of essence as well as to the formal-ontological notion of τóδε τι. The present investigation will have an almost exclusively methodological character, its purpose being to clarify a specific, yet still quite unexplored, tool of Husserl's phenomenology.