1oz (30g) WHITE Glow in The Dark Neutral Invisible Strontium Aluminate Glow in The Dark Fluorescent Pigment Powder

The one I received doesn't glow.

This stuff is great. Mixed mine in clear polyurethane ( water based)

Great glow that charges quickly, especially in the sun. Glow lasts longer than other glow powders I have used.

I was on the fence about this product for a while. When I charged it in the sun it glowed white but turned blue quickly. Charging it with a spotlight resulted in a greenish glow. I put it away and moved on to another project thinking that this wouldn't work. Today I decided to get out the UV lamp that I use with UV resin to see what would happen. After charging it for just 30 seconds under the UV lamp I got a very bright, very very WHITE glow that was bright enough I could easily read with it. After an hour it started to take on a blue cast as the glow dimmed but after three hours it was still visibly glowing.

At first, I thought this was yellowish-green (Grellow, I will call it). Then, I fired up a 35 watt UV LED bar (there's one on amazon for 12 dollars and it's phenomenal) and a very low watt led bulb... each affected the color differently so I realized the glow is dependent on factors I'm still not 100% certain about (like light wave length). I also have a 3,000 lumen o-light flashlight that will get this white. If you then shake it around (in the bag) you mix the powder that did not get bombarded with photons and the stuff that's glowing and you may then get different hues - that's NOT the powder working incorrectly. It DOES work and works quite well. The light they included, while super weak (and FREE), is in the correct spectrum and will make a pea-size spot glow white for a second. I am impressed and happy with what I got.