?Similar to the traditional solvent-based inks and made with the same pigments these inks clean up with soapy water. They can be used for all forms of intaglio lithography and monotype. All colors are lightfast and permanent once dry. Ideal for students and artists looking for an ink that does not contain solvents and is odorless non-toxic and easy to clean. While Charbonnels’ traditional inks are made with linseed oils and those oils are not toxic the solvents used to clean up the tools plates presses and artists hands do have toxicity concerns. Those concerns have made it challenging for schools and studios to continue some of their printmaking programs. This makes AQUA WASH especially useful for classroom printmaking programs and for artist studio use since solvents are not needed for clean up!