Frankly, most of the glow-in-the-dark inks on the market SUCK. The results always seem to disappoint unless you are willing to lay down so much ink as to make for a totally undesirable hand and high-cost per print.  Thus, I’m super stoked on this high-solids water-based glow ink from Allureglow, USA (not a sponsor of The Ink Kitchen) that we’ve started working with.  When printed over a discharge base, minimal ink deposit is required to achieve a relatively soft hand and impressive glow effect.  Pics don’t quite do it justice, but trust me, it glows!