The study of art therapy and spirituality makes it possible to describe the symbolic and universal meaning that the different expressions of art can contribute to the comprehensive transformation —personal and transpersonal— of spirit. The article understands said transformation from the perspective of intervention in pathology or dysfunctionality, as well as of health and personal growth promotion. What is it about art that transforms individuals? The paper argues that the therapeutic relation, the creative act, and the authentic self are the pillars of a productive individual and social intervention.