The Octopus Fluids Alcohol Ink is a transparent and fast-drying colour with an alcohol base developed especially for fluid painting techniques. It can be used on almost all smooth, non-porous materials. It is best suited to specially coated papers, glass, metal, ceramics, porcelain, and stone the applications of Octopus Fluids Alcohol Inks are almost endless. After drying, the acid-free Alcohol Inks are smudge- and waterproof, but can be re-liquefied or removed at any time using isopropyl alcohol. Even better results can be achieved using our Octopus Fluids Cleaner.