6 Pieces Light Ink Pen Invisible Ink Marker Disappearing Ink Secret Pen with 6 Pieces Mini UV LED Keychain Flashlight Marker Keychain for Secret Notes Money Identify (Black)

We used this to make clues for a scavenger hunt and it worked great! The ink didn't stick to plastic well but to all paper and textured surfaces, it worked well! The lights are a bit hard to push the button and keep on for very long but they do work!

All in all definitely worth the money.Positives : they work as advertised they are invisible and light up great with the black lights.Negatives: out of the six pens 3 stoped working after a few days but the other three are still working fine.Biggest problem is the little lights. I only have one that still works…. But it’s been approximately 4 months.So again definitely a great gift for kids and adults

Wrote codes on old pictures for a homemade escape room and they worked great. The black lights worked great for a little over a month, my daughter may have used it too much

Leave secret notes to your kids comes with plenty of key chain black lights for the kids to have their own to look for secret notes in the house someone leaves them

Pretty low quality felt tips. All of the flashlights are basically useless and hard to press the button. One of the pens was dried out Upon arrival. you get what you pay for I guess. Probably fine for kids who don’t care about quality but if you’re looking to use these on the regular for whatever reason you should go with a refillable fountain pen and UV ink bottles And a dedicated AA or AAA uv flashlight. Pink has to completely dry before you can even see what you wrote in UV. The blue and yellow felt tips are so wide that you can’t use them for fine or small handwriting. Great for art or raves though.

Fun set of markers. Green wipes off some plastic surfaces that pink and blue don't, not sure why.

The markers are OK, not the most solidly built, but all six worked. The red marker really showed up well under UV, the others were not quite as easy to see, but they did work. They are fine-point markers that make fairly narrow lines. The mini flashlights are cute, and they work with the markers, but they are probably best for kids to play with. I found it much easier to use a larger, inexpensive (< $10) UV flashlight to see the markings. The markers will write on a variety of surfaces. The marks are pretty much invisible on typical paper, but are detectable on very smooth surfaces, like plastic.Summary: They work; fun activity for kids, adequate for many other uses.

Exactly! What I was looking for! Beautiful markers, perfectly shows up under blacklight. Invisible under normal light. Easy to use. Pretty colors. I'm so Happy with these I NEED more colors!!!