DirectGlow Set of 3 Invisible UV Blacklight Ink Marker Blue Red Yellow

Use them for the escape rooms we do for the kids

Purchased for a project and wasn’t sure how well they’d work. Pleasantly surprised at how well these worked on a white shirt.Red is the best color and stands out. Blue is more of a light yellow and yellow is a bright neon color.Tried on skin as well and the colors really pop.Would purchase again.

The ink goes on invisible and glows brilliantly in UV light. These work especially well on paper which contains no OBAs (Optical brightening agents). Common printer paper is not optimal, as it does contain OBAs. While these are largely invisible, the colors can be activated by ANY UV source, including the sun, however they'll be hard to discern without some filtration of other white light. For black light art these are WONDERFUL. The blue and pink produce colors not common in other highlighters/neon markers and with mixing you can get some pretty unique hues. There are some minor differences in the function and application of each color as I received them:-Pink: Point came split and had to be trimmed with nail clippers before I could use it. Application is very wet and bleeds like crazy if lingering too long (either due to the ink or the split tip). Color-wise, this is THE marker. Goes on a pale lavender color and transforms before your eyes into an extremely brilliant hot pink as it dries. This pink is brighter and pinker than even the best pink highlighters and is extremely visible under UV on a multitude of light and dark surfaces. If only the tip wasn't split...-Yellow: Finest point, practically no bleed. When wet, glows greenish yellow, glows a pale blue when dry. On skin it stays greener much longer, and on paper the green can be brought back by breathing moisture onto it. As this color didn't bleed much, I often have to go over a line several times to get the desired brightness. Unfortunately the ink in this marker is very corrosive to paper and seems to damage it more easily than the other two. I found that licking your finger and touching the green causes it to stay greener on a more permanent basis. The result of this is never really green or yellow, but somewhat of a cyan color (See bottom row, middle column of second photo).-Blue: Most consistent application, has a nice even stroke with an average amount of bleed. Will not show up as well on paper with OBAs for secret messages. Excellent base lightener for other fluorescent markers when used for blacklight art. Using this under a common pink highlighter for instance yields a rare, and beautiful amethyst color. By itself, this will be brighter than any blue highlighter/marker you have. Extremely useful for adding "OBA white" areas to your art.

Yeah, we made an escape room in our house for the children. It had a Bible theme and was kind of complex, yet simple. The markers really helped, especially when they found the batteries to the UV flashlight. Oh, they had fun! It seemed to show up well, even with all the lights on and drapes open. The only thing I was wondering is if there could be a little more difference between the green color and the blue color. Under the UV light, they both look almost identical. The red looks hot pink, but that blue... hmm... Oh well, the color isn't critical for this game. Just thought you might want to know, if you're set on buying these.

Product arrived in a timely fashion, however 2 of the 3 pens were dried up and didn’t work. I needed them for a project. It is a pain to return things. I just wanted them to work.

These do somewhat work as described but these seem a lot smaller than the pictured markers are. The yellow is not yellow its blue. Also they are hard to write anything legible due to the large tips. The pictured markers look adult and maybe professional whereas these ones I got look like children's toys. Like I said they still function somewhat correctly but I did not get what was promised when I purchased.

I bought 3 sets of these for my grandkids so they can have fun with secret messages and pictures. The markers work perfectly.At first I tried them on regular white printer paper and I was not happy with the results. But I remembered somewhere it saying these type of pens don't work well on "whitened" paper. So for the heck of it, I tried it on "Sticky Note" yellow paper and the colors popped! As you can see in the picture.. white paper on the right and Sticky Note yellow paper on the left.

I wasn’t sure how these pens would turn out. Read a few reviews and narrowed down to last 2 products and finally picked this one.Must say I was pleasantly surprised with the results.Pink and Blue left a faded line while writing. Nothing obvious but if you hold the paper against light, you could spot it. Yellow, however, was absolutely invisible! I was impressed with that.We used these pens for an escape room puzzle. Our paper had some images on them so it was hard to spot any invisible ink markings easily. But I did test on plain paper first. We had 3 teams play escape room and not one could even think about invisible ink writings on the paper. I would say it did exactly what I expected it to do.Definitely worth 5 stars based on my experiende. Price was just right too.