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

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.

Works well! I used this to decorate signage for Halloween. It is easy to use. The ink does absorb light and give it off at night. I would recommend this product for arts and crafts.

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. 🤣

Useful

Made mostly of rubbing alcohol, so due to Amazon hazards, they cannot accept this as returnable. I contacted the seller to return because I purchased a blank stamp pad to use for blacklight prints. I noticed immediately that it smelled like rubbing alcohol, tried a few prints which were barely visible, then put the pad aside for a few minutes. When I came back, I resumed stamping, and found the pad was COMPLETELY dry. Mind you, I had SATURATED this pad with about a third of the bottle, and now only a few minutes later after closing the pad, it was dry. I contacted the seller for return since amazon doesn't accept it back directly. They sent me a message saying that they'd accept it by my paying for return shipping due to this being a case of buyer's remorse. Not sure if they understand the meaning of what buyer's remorse is.

This is fabulously blue! I am using this for a summer camp to create some low budget special effects. I was confident when I ordered it that it would glow under black light, but I had no idea that it would glow so much! It is very very vibrant! By and large, it is completely invisible until you are around a black light. It does leave a tiny purple residue that can be seen under normal light - but not always. It seems to depend upon where on your body you have it. I could see the hint of purple on my wrist, but not on my forearm. This does wash off with normal soap and water, but takes some actual focused effort, so you don't have to worry about it just rubbing off easily. Yes, this is an amazing ink! Well done, Opticz!

It clogs the printing head, which means you need to replace the entire printer. It's a lot of ink for fairly little money, and it gets the job done, but a little sloppily.

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 :)