Piñata Alcohol Inks are highly saturated, fast-drying inks that are unparalleled for vibrancy, and will produce fantastic results on any porous surface. The acid-free, dye-based, highly transparent inks can be used on an enormous range of surfaces, including paper, card, glass, metal, plastic, ceramic, stone, leather, and more. Indelible and impervious to water once dry, the inks clean up with alcohol and re-wet themselves, giving you unique effects and techniques not easily achieved with water-based systems. Try them with the Yupo Watercolour paper and watch them expand, combine and produce truly stunning results. Suitable to tint resin - Simply add a few drops of alcohol ink after mixing the resin and hardener.