Invisible Blue UV Reactive Water Dye

Good uv die. Same as what would be inside a uv marker. I used this to make transparent uv paint for an airbrush. I had a hard time getting this to mix with water, it would just sink to the bottom like a heavy oil. Also wouldn't dissolve into paint thinner, however acetone finally did the trick. Worked great once mixed with acetone and used in airbrush.

I purchased this to add to mix strings to create something that glows under black light.It wasn’t until I got the product and was able to go to their website where I found it was not safe for consumption.If I’d known on the Amazon page I probably wouldn’t of.net, however it worked exactly hours it’s suggested

For Christmas, I got my son, who is a huge Fallout fan, a Nuka Cola bottle with the intent of making it glow like the Nuka Cola Quantum bottles in the game. I rigged up a UV nail polish setting light puck to point up in a base. Filled up the bottle with tap water about about 25 drops of this Invisible Blue UV dye and put the bottle on the base. When I turned the UV light on, it glowed exactly how it does in the game!! I can't wait for my son to see this when he gets home for school. I have hardly touched the total amount in the bottle, so I'll have plenty more in the event that the current dose fades over time. Very happy with the results!

Actually incredibly effective and totally invisible when not under blacklight. I will say, though, it seems you have to use a pretty high concentration.

I was very excited to use this and 2 other colors for a haunted house. One drop did very little. I ordered 3 colors, and they sent me 2 labeled blue - except one of those colors was CLEAR. The other blue came out light green after I used about half the bottle. After a few hours, all colors were very pale. None fluoresced under black light. Very disappointed. I didn't inspect the bottle labels until I was putting the drops into the water. I gave a score of "3" for easy to use since you just put the drops in the water. But you might as well use food coloring.

Used this for a glowing bottle that sits on my shelf. Barely takes a few drops and lights up just like the picture. Doesn't take much light either. No complaints whatsoever.

I want to know the composition and concentration of this dye, and whether it is biosafety?

I purchased this for an effect in a tiki bar. This small amount does not glow as strong as I would expect, and it all but evaporated out from one of the effect tanks, since there was a bubbler used, while the water level has not dropped noticably. I attempted to contact the supplier directly via email from the packaging and received no response. Not something at this price I'm interested in purchasing again, and really no support.