For non-toxic printmaking or solvent-free cleaning. Oil-based inks that wash away safely with liquid soap and water. Suitable for all types of relief or block printing, such as woodcut and wood engraving, letterpress and linocut. This range contains less than 1% of driers. For faster drying rates, add a small amount of cobalt or manganese driers. We always select lightfast pigments for our formulations. All our inks are rated 6 or higher on the International Blue Wool Scale.