In his painting practice, Henri Hagman concentrates on the dimensions of the abstract color painting. He is interested in the prolonged gaze and the polyphonic expression. Besides traditional painting, Hagman’s practice also includes painterly performances and events of social painting. Due to his artistic research, he has also done light installations and demonstrations, video paintings, and three-dimensional paintings. All this has helped him to understand the language of the color painting on a two-dimensional plane.
Hagman has also written two books about art. The latter, "To the Peak of the Color Painting", was published in 2023 by Taide.