Blacklight Invisible Fluorescent Powder Pigment, Visible only at UV 365 nm Black Light Water Based (Yellow, 0.35 oz(10 g))

Very cool product. I'm going to need some more!

This is a tiny amount of powder that is supposed to mix with about 7 ounces of paint. I mixed it with white primer and painted it on black plastic in a hope that it would make it stand out in UV light. All I got was speckles of white in my paint. Yes, my paint was opaque, but I mixed it as well as I could and I put the paint on very thinly as well as thick and got the same result in both cases.

Purchased to put on items at work that kept disappearing. No disputing the culprit. Not a large quantity, the picture is deceiving - but a little goes a long ways.

I was very very disappointed. I had high expectations, was using this to be able to identify expensive tools and equipment. It doesn’t even work under uv lighting, also adding that I tried using it under multiple different professional and commercial uv lights. And this doesn’t mix well at all tried using multiple mediums: acrylic, enamel, lacquer, alcohol based, clear coats-polyurethane. It never would mix in well at all there were always clumps, even after using a shaker set up to mix. Overall very disappointing and a waste of my money in an effort to elevate the issue of things being stolen/or proof of ownership.

I purchased 10g and mixed it at over 5% with water based polyurethane. It does not work. I tried mixing it with water first to get the particles to separate evenly, then combing it with the polyurethane. That did not work. Only small floating particles here and there react to the UV. It does not create an even uniform UV reactive paint. A complete waste of money. I only gave it two stars, because most people don't read one star reviews. But this product does not deserve any stars. If you want a packet of toxic particles that are UV reactive, then this is fine. However, the Red is not red. It is a low glowing orange. The picture is a fake.

Totally satisfied! This works great! I was a little skeptical at first! Absolutely happy with my purchase! Thanks

I have to give this a 3 star because it does work, but you have to be careful on what you use this for. I tried to use this over a wide area and didnt work too well. But if you have a small space or object, it may work just fine.

The item is not invisible and can be seen during the day. Item description made it seem that product would only be able to be seen by UV Blacklight and return to invisible afterwards. Instead the color lingers for awhile.