Tim Holtz Alcohol Inks are transparent dye inks that dry almost immediately, are acid free, and meant for use on non-porous surfaces. But don't let that fool you - there are techniques for using Alcohol Inks on paper too. Yupo is synthetic watercolor paper that is a perfect match for Alcohol Inks. Allow drops to fall and bloom on the surface of Yupo, manipulate them with a coffee stirrer, or move color with a brush or blast of air. For more information, see all of our blog posts about Alcohol Inks.