Opticz All Purpose Invisible Blue UV Blacklight Reactive Security Ink (2 Ounce Bottle)

Fonctionne très bien 😀

Waste of money...

This product is easy to use and looks great under a black light. I've painted plastic, metal, fabric, paper and resin with minimal issues. I found that painting over fabric is particularly successful, and white is best. I was glad that I read the reviews that indicated that while this works well- it is very thin. On occasion, you do need a few coats to really pop- particularly if the object isn't stark white. This didn't show up on anything I painted in normal light- and is very much invisible until revealed by blacklight. This is exactly the answer to what I was looking for, for personal projects. I would buy again.

I thought it wasn't going to be good quality and last long on the skin. However, it actually lasted 2-3 days on my skin. I was really testing it out with intense scrubbing and soap, and it still showed under UV light. I think it's perfect for events because it doesn't wear out easily. I also think that it's bright enough for darker skin tones because it glows really well like in the picture that it shows. Just don't forget a UV light, and a blank ink pad. :) hope this helps lol (will be updating after an event for a better review) Update: It did well especially on different skin tones, and also on sweaty kids :)

This product was purchased for two specific projects. First one, painting a temporary tattoo style death eater mark (Harry Potter) on my forearm. Second one possible make up overlay for Halloween/cosplay. The photos attached are during daytime lit room, and no light pollution dark room. Try not to laugh at my horrible drawings as I really could not see once the ink dried and was just playing around with it. My right leg “Hi” shows The high alcohol content of the ink that allows for super fast dry time, however, the downfall to this is that it is very, very, thin and runny. You will see a lot of bleed through as it absorbed in the cracks in your skin. It is very bright in both bright light, low light, and dark situations when lit with the smallest UV light. UV light shown is a Stylus pen light held about 3-4 feet above the my legs The photos do show a very high saturation light, very bright, but not overly so. My left leg “Hello” shows the durability after three warm and hot water with Dove hand soap, Jurgens, body wash, and lava soap. So once it’s on, it’s gonna stay on. Good thing about this is if you get it, wet and press, clean skin to it, no noticeable ink transfer was found. I did not try a traditional hand stamp or ink pad. I used a talon acrylic fine tip Paintbrush so I cannot speak on how it would work using that. For something simple, fun or quick I would highly recommend this, especially for the price. The 2 ounce bottle I purchased is more than suffice as truly the adage a little goes a very long way with this product. The only reason why I did not give it a full five stars, even though it is invisible during non-UV lighted areas, its major pro is also its highest con. You just can’t wash the stuff off. 🤣