Glow in the DarkNeeds light to charge the crystals but NO light for it to Glow
UV Black LightNeeds Black Light for it to Fluoresce, will not Glow in the Dark
PhotochromicNeeds UV rays Sun or Black Light for it to change neutral to color
ThermochromicNeeds heat to change from color to neutral white.
Glomania Glow in the Dark Glow24tm Garage floor Flake. Use our flkes either in Neon or Glow in the Darkl to create amazing epoxy 1part and 2 part floors, counter tops, chairs table tops.