The purpose of this thesis was to explore how alchemy has influenced Carlos Estevez’s work through a study of the symbolic repertoire and the philosophical concepts associated with it in his art, particularly how these are expressed in his artworks and how alchemy has evolved thematically in his oeuvre. The study of alchemy influenced this artist so deeply that even pieces that were not primarily inspired by this philosophical system show traces of it, essentially by representing the concept of transformation, crucial to understanding the alchemical process. This thesis is based on Carl Gustav Jung’s idea of metaphysical transformation as one of the main aspects of alchemy, and on his theory of active imagination as a tool to represent thoughts through artworks. Alchemy transformed Estevez’s art, and by extension the way he approaches life, making him conscious of the importance of transmutation and alchemical concepts.