Invisible Ink Pen with UV Light Secret Message Pen Spy Pens Magic Invisible Markers Classroom Gifts for Students, Party Favors for Kids 8-12, Goodie Bag Stuffers for Kids

I bought a bunch of these to give to a group of kids, and they were a total hit. The invisible ink and UV light bring back memories of old decoder pens—such a fun, clever concept. They’re easy to use, work well, and make a great little gift or classroom surprise.

Got as a Christmas gift for my son because he’s been telling me he wants an invisible ink pen and we’ve had so much fun ever since Christmas! We even write on our hand little messages to each other and then use the glowing part to reveal the message. He has shown other children and they’re impressed by these pens as well. Parents are asking me where I got them. They’re good quality, very durable, great value for the money since you get four. They are easy to use to use and they do dry quickly.

Great value and color variety. The kids had so much fun using these pens. And they actually work great. Good buy

My 6 and 4 year old thought these were so cool! So far have held up great except the occasional flickering of the lights. It does initially show up on colored paper, but quickly disappears (see video for example).

love them they work perfect

My son asked for these pens after seeing them at a book fair. He took them the same day they arrived to a football game. It was a little cold outside but the pens wrote smooth for the entire game. No one had any idea was he was writing down until he used the black light that's attached to the cap of the pen. He loves that he can write secret messages and I love that he's practicing his writing skills so it's a win / win. The four pens glow in the same color so the pen color is not an indication of ink glow color. All the inks are clear and you need the Black light that's attached to the cap of wach pen to see the message. This was the best deal I came across for this type of pen. My toddler also lost the cap after stealing it from his brother's room and after 2 hours without a cap it still writes.

I am not sure if it was the product or that my grandkids just were not interested, but I got these for them for stocking stuffers and they pretty much just put them aside. Maybe it was because they were overwhelmed with other more impressive gifts. But I still have not seen them use them.

The KERRT Invisible Ink Pens were a big hit with the kids! They loved writing secret messages and revealing them with the UV light. Fun, easy to use, and great for parties or gifts. Highly recommend!

These guys do exactly as advertised-I secretly use them daily...XD. They are also cute, and the light on each pen is very helpful.

Used the pens to write invisible clues for a Christmas themed scavenger hunt I prepared for my grandkids. Their little minds were blown once they saw how they worked. Fun was had by all. LOL: After the scavenger hunt; the grandkids may or may not have written invisible scatalogical words on their parents hands and arms.

Great item. Does the job it's supposed to do. Cannot see with the naked which is what I needed. Blacklight attached to pen so that's useful.

These work great…still don’t think they are worth $10. Probably something you can find at Dollar Tree or somewhere but my daughter wanted them and sometimes convenience of delivery to your door is easier than shopping around.

Cheaper than buying in a school store. Does what it supposed to do. My son and daughter are loving and having fun with it and trying to do their secret drawings on their paper. Pen quality is good with a variety of colors.