20 Pcs Invisible Disappearing Ink Pen with 20 Refills, UV Light, Magic Invisible Ink Ballpoint Pen

I had a small issue with one single pen, and it was easy enough to fix. Something was loose inside with the connection to battery. However, all of the other ones I have had really had issues, and these did not. I would definitely suggest these vs others. And it is NOT a marker type, it IS a ballpoint type pen! Most that I had found when looking were marker type, so these were exactly what I was looking for - PEN

The marker invisible ink pens are cool but they smudge! So I was looking for an actual pen, these are perfect. The black light is a little bit weak (and hard for me to hold down constantly) but the ink is incredible, like holy crow incredible. Going to buy a small goose neck black light lamp and I’ll bet set! :))

The pens are great, and they do exactly what I bought them for. The ink doesn't fade away, from what I've seen so far, and gets picked up by the blacklight very well. It even stays on the skin for a little longer than I expected. My only problem is with the black light that's on the pens. They die out very quickly. I'm sure this could be fixed with a better battery, but I don't exactly want to buy 20 batteries, much less replace all of my pens with them. So, I bought a rechargeable black light to save me the hassle. There's a lot of ink in the pens, so there's no need to throw them away just because the black light doesn't work. You'll get more than you paid for if you just have a black light already at the ready. Because honestly, you didn't buy it for just the blacklight. All in all, I gave this review five stars because the black light isn't a big issue for me. Just one pen is still lasting a very long time. I can't wait to see how long it'll take for it's ink to run out.

Perfect for those secret messages you don't want anyone else reading. ;)

Of 20 received in pack, 6 had extremely faint lights, 1 was DOA, 1 light was so weak it might as well be DOA, 11 had strong lights, and 1 had a bad switch that makes it too fussy to work with. They aren’t great in regular room light, but OK when used in a dark area. You can see the ball point impression on the paper at just the right room light angle, and the light has to be very close to the paper to get the UV reflection. I was expecting more from these pens. I don’t know how long the shelf life is for the batteries, but I’m thinking not long at all, and the batteries are not replaceable. I wouldn’t buy them in advance of a party and expect them to work at the time of the event. Would not purchase again, as there are better ink/light combos out there.

3.5 stars! The writing and look of it were good, but there were a number of them in each whose light didn’t turn on.

My son had me order these pens. He uses them and feels that they work great! When you look at the page you can tell something on there but you can’t read what is written. Once you shine the light from the pen on it, then you can read it.

Used these in 2nd grade classroom Valentine’s Day cards. They were a HUGE hit with the kids!! I also use them to write fun notes in my child’s lunchbox.