Ingegerd Torhamn was drawn to the straight lines and geometric shapes of functionalism. Her paintings often feature seemingly simple and non-figurative motifs. She was one of the first and foremost Swedish concrete artists, shortly after GAN and Otto G. Carlsund, and contemporaneous with Erik Olson.
She participated in the legendary Sotckholmsutställningen,1930, which marked her significant breakthrough. In recent years, her concrete paintings, especially from the early years, have garnered increasing interest. Similar to Olle Baertling and L.G. Nordström, Ingegerd Torhamn developed a wholly unique concrete style that is immediately recognizable. However, she was not only a prominent Swedish visual artist but also a sculptor and textile artist, having studied at the Royal Academy of Fine Arts in Stockholm and intermittently abroad.
Ingegerd Torhamn created around ten carpets, and the architect Gunnar Asplund was early impressed by her bold and austere design language. During her studies, she met Astri-Bergman-Taube, who became her best friend. They studied at the Royal Academy of Fine Arts' sculpture school under Carl Milles. Together with Agnes Cleve, Ingegerd Torhamn exhibited at the Konstnärshuset in Stockholm in 1932. She had numerous highly regarded solo exhibitions over several decades.
Ingegerd Torhamn is represented in collections including the Nationalmuseum and Moderna Museet in Stockholm, Stockholms stadsmuseum, Statens Porträttsamling, and Röhsska Museet in Gothenburg.