These luminous, fast drying, acid free inks are specially formulated to create metallic highlights when combined with Adirondack® Alcohol Inks. Use them on all non-porous surfaces such as light or dark gloss paper, dominoes, Memory Glass and other slick surfaces. Details:Available in multiple colors0.5 fl. oz. (14 mL)Acid freeConforms to ASTM D4236For use with alcohol inks (sold separately)