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

It's a fun thing for the kids. The quality is good. Good value for money.it works. Different colors.

These are great. I wasn't convinced that they'd really be invisible to the naked eye. I thought they might be hard to see...but you really can't see anything without the blacklight on it! Impressive going to have lots of fun w these!

The media could not be loaded. 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!

The media could not be loaded. When I got the product everything was going well until I opened the pink one and it did not work!! I was kinda disappointed because it took a veryyy long time to get it. The blue and yellow colors look the exact same but it's not a big deal. But for 9 dollars is really good! It's not to expensive but not to cheap, the quality for a pen for 9 dollars is pretty dang good. The flashlight's durability is really fragile and cheap. The pens are really high quality!! I don't really understand how or why the pink didn't work and I'm still sad about it but I would probably buy this again! :D

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!!

This was exactly as pictured. Did the job I needed it to do. I am an eBay seller and sometimes,especially for electronic and cameras, I need to use this product in case I need to refund a buyer. The buyer then returns my product and I need to ensure I’m receiving my property and not someone else’s. With this invisible ink pen I can be absolutely sure that my property has been returned.

Awesome! Works well! If it’s hard to see with the black light , bring it to a dark place.

This invisible ink pen kit is such a fun and exciting way to create secret messages that can only be revealed with the UV flashlights—perfect for treasure hunts or detective-themed activities! The portable UV lights are super handy for not only uncovering hidden writing but also for practical uses like checking currencies or spotting stains.