Tanning was a self-taught artist. The surreal imagery of her paintings from the 1940s and her close friendships with artists and writers of the Surrealist Movement have led many to regard Tanning as a Surrealist painter, yet she developed her own individual style over the course of an artistic career that spanned six decades.
Through the late 1940s, Tanning continued to paint depictions of unreal scenes, some of which combined erotic subjects with enigmatic symbols and desolate space. In the 1950s, her painting became less explicit and more suggestive.
In France, she moved away from Surrealism and develop her own style. During the mid-1950s, her work radically changed and her images became increasingly fragmented and prismatic, exemplified in works such as Insomnias (1957, Moderna Museet, Stockholm).