Flash Oil is used to reduce the tack in etching inks. It is clear and non-yellowing. Because it is high in wetting strength, only a few drops are required to reduce most inks. Intaglio artists who do viscosity printing often choose Flash Oil 470 over raw or light-bodied linseed oils to decrease tack. Unlike most modifiers, this oil dries by evaporation, thus reducing the danger of contaminating the paper. Ink modified with Flash Oil 470 slowly returns to its original state as the oil evaporates during usage.