• The light put off by our products is ambient, so it does not affect your night vision.
  • All glow-in-the-dark products need darkness; competing light sources will diminish or obscure the glow, and the stones will instead begin to absorb light.
  • Our plastic and glass products will hold up to extremes of heat and cold. GLOW Stones USA products are just as durable in the baking sun of Tucson, Arizona as they are in frigid Minnesota winters.