'Oxidation Painting (in 12 parts)' by Andy Warhol (1978) in high resolution

Working with his studio assistant Ronnie Cutrone on the Oxidations, Warhol experimented with the catalytic reaction of urine and metallic paints to create brilliant golds and acidic greens that radiate across richly textured surfaces. By urinating on the canvas, he succeeded in creating the “physical presence” to which he aspired in painting and simultaneously parodied the act of painting. The Oxidations were the first abstractions that Warhol produced and reveal his fascination with and envy of the Abstract Expressionist painters, who had dominated the New York art scene during Warhol’s early career in the 1950s with their active and gestural approach to painting.