Enviro-Friendly Brown Iron Oxide is a dark brown that’s useful for warm shadows and other dark values. Enviro-Friendly paints are made with pigments from the earth’s crust that are obtained through Iron Oxide Recovery (IOR). This process removes the iron oxides that pollute mine water, leaving it clean enough to safely enter nearby rivers and streams. The recovered iron oxide is thoroughly washed and used as pigment for a range of rich, earthy colors.
Gouache swatches are painted in two sections. The top is mass tone straight from the tube and the bottom is mixed 1:1:1 with paint, water and Titanium White.