Developed by Holbein in 1999 to offer the same high pigment quality and archival characteristics of Holbein’s Artists’ Oil line while allowing soap-and-water cleanup, Duo Aqua Oils are characterized by rich hues, high chroma, excellent lightfast ratings equivalent to that of traditional oil color, and superior working characteristics. Duo Aqua Oil offers 100 highly pigmented Artist Grade Colors suspended in a water-soluble, Refined Linseed Oil, and Holbein specifically lists 17 colors as “Elite” that contain heavy-metal pigments such as cadmiums and cobalts. Duo Aqua Oil is compatible with all media, including traditional oil color and mediums, watercolor, gouache, acrylic gouache, and acrylic. Duo Aqua Oil is an excellent teaching tool and a superb printmaking ink.