Ok so since I hit the front page I have had a LOT of people asking the same questions, so just a quick FAQ for y'all to make life easier I'll add to this as more questions come along!
How do they GLOW??
Magic which is provided in the form of a nifty little compound called strontium aluminate. This is the standard glow compound used all over the world. You'll find it in toys, watch faces, emergency signs... It's completely safe and non-radioactive.
How long do they glow for?
Answer: It depends on the colour!
Red is the worst glow colour around ever. Although I have timed it glowing for over 3.5 hours so far, I would class a "good" glow as lasting 1.5 - 2 hours.
Bright blues aquas and greens (<-- yes he's green, it's the closest I could get), by contrast, are the absolute best as these are the naturally occuring wavelengths of strontium aluminate (w