Invisible Ink Pen, Spy Pen with 3 PCS Mini UV LED Keychain Flashlight, Disappearing Ink Magic Pens with Black Light Markers for Secret Notes, Fit for Christmas Halloween Holiday Gifts (3 PCS)

Fun to use but also helpful when secretly marking an item. Great price too.

Kids had a great time! Can still see the ink initially, have to let it dry a bit to be "invisible".

These are very fun for the price. I got them for a treasure hunt puzzle game with a group of children. The lights aren't very bright, but I was pleased that I got several for the price (and I already have a UV flashlight so it wasn't a huge loss that they aren't the best). The markers were all full of ink--none were dry. They show up nicely under the lights, especially the pink. My biggest complaint is the blue appears to be pretty much identical to the yellow? At first I thought maybe there was a mistake and the blue marker got filled with yellow ink when they were made, but the blue pen is also the most visible pen under natural lighting, so it seems to be different. All of them are a bit visible until they dry, but if you look closely you can still sort of see the blue marks hours later. I may have gotten a bad one. The other pens are great though! I definitely recommend these (especially if others are getting better blue markers), they're lots of fun.

We made an escape room for Christmas and used the black light pens to write out some clues. It made it so fun!

the kids will enjoy writing secret letters to each other. Im sending my bf a love letter in the mail, but leaving the light out of the envelope. So, when I arrive on his doorstep with the light, he'll then have to decode the message, as well. I will also write messages on the bathroom floor, wall, the refrigerator and headboard there, so he can find each message as he finds clues hidden in his sock drawer, butter dish, keychain, instructing him to solve a clue to find the next message... etc etc... fun!

I just gamified my journaling and note taking.I feel like a kid hidding hints in my notes...

If you're getting this for art, or drawing on yourself, go for it, it amazing, but if you want to draw in a book, or blacklight your journal three with it, don't. It bleeds through paper pretty easily. If you want to do that, I'd recommend erasable highlighters. It takes several minutes to fully dry, it's fun and decently bright. For what it is, it's worth the money long as you know it'll do what you're looking for

Bought for eBay store to lower electronics returns. Writes great on paper like items, but doesnt have that sharpie quality that can write on metal objects, it just wipes off.