Uniclife 3 Pcs Invisible Ink Pen with 3 Pcs UV LED Keychain Flashlight, Spy Pen, Disappearing Ink Magic Pen for Secret Notes, Magic Spy Marker with Purple Light for Christmas Halloween Holiday Present

Super cute and fun stocking stuffer for the kids for Christmas. They esp love using the little light for many things besides just seeing their writing. Pens work well and dry quickly and they liked the bright colors.

These are great! We used them to label the back of each wedding RSVP with a number so we could figure out who it was from - in case of hard to read lettering and/or they don’t say who it is. Once the ink dries I couldn’t even see it! And with the light provided it was easy to see! Highly recommend if you want an invisible ink pen that’s at a great price!!

These are so much better than the pens with the big light on the end of them. They are very inconspicuous and they write in each represented color. Lots of fun for kids and adults. The lights can hang on a keychain. They are exactly like the lights that show blue light filter on glasses. It’s difficult to see the blue a yellow through my camera phone but believe me they are true to color.

These worked well to number my ivory wedding RSVPs. And I actually got to use them once as someone did send back an RSVP without a name! I tested these on several types of paper and discovered that they don’t work as well on darker papers, the markings are faint, but still visible if you are looking or paying attention. But on light paper, you couldn’t tell at all!

All pens work, great for craft projects. Works exactly as expected.

Fun gift

When I write on it, you can clearly see the "invisible" mark under any light and you do not need to use the UV light to visualize it. Even if you dry it completely, you can still see it anyway. Whether to recommend it, depending on the preference. It is good and is "invisible." Just don't hover under any light.

These are very fun. They work as stated. I think the pink one comes out the best because it's more vibrant than the other colors. The quality is on the lower end, but that's to be expected for the price. Also I think it does better on white than on black.