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This fine point marker, is loaded with special ink that is only visible under UV light. It includes a mini LED UV black light with batteries, so you can view your messages.
Children think that they are secret agents with these pens, lay mystery adventures and writing clues for each other. You can make secret messages with your friends.
Perfect theme for a fun party favor, for drawing, secret message writing, currency checking, security marking. It is a great gift for your lover, family and friend.
Remove the cap
Our Invisible Ink Pen comes with full invisible ink, once the cap is removed, the marker is ready to be used. Make sure to place the cap back on after finished writing your message.
Write your secret message
You will not be able to see the message, but it is there! Write as you normally would, but if you need guidelines, use the UV light to continue! You can write in ANY surface.
Turn the UV light to reveal message
The UV light is located on the cap of the pen, and it comes with batteries included, switch the button on/off and reveal your secret messages with ease.
HeroFiber Invisible ink pens
1. Write down secret information with a pen. Don't worry about being discovered
2. This non toxic and tasteless ink is a safe toy for children
3. Can be used on fabric (T-shirts), paper, skin, or any smooth surface, permanent ink but washable!
4. Children love these spy pen kits
5. Use this pen to keep secrets and play detective games
6. Perfect gift for children at parties, school, giveaways, or other events
Lisa Klimko
Reviewed in the United States on February 4, 2025
Kids love them
Krystina Johnson
Reviewed in the United States on March 6, 2024
This was a fantastic purchase for some fun and functional party favors. They were able to use the items for the party itself but also take home for continued fun.
Steph
Reviewed in the United States on March 25, 2024
I bought these to add to valentine gifts for my grandkids. They were amazing they even work on skin.
Julie
Reviewed in the United States on February 4, 2024
Great quality and was a hit for my sons class.
Customer
Reviewed in the United States on November 24, 2024
I was a bit skeptical that this would work so well. I figured there would be some faint reminent of the marker on the paper but there was not.I would buy again.
Stew Van
Reviewed in the United States on April 7, 2024
We purchased these for my son's birthday and they were a big hit. The notebooks don't have a lot of paper as compared to other notebooks, but that is the only downside. They seem like good quality, the pens work good, seem to last awhile and the lights are quite bright. And yes, it really is invisible!
Tiffani
Reviewed in the United States on April 16, 2022
Overall, this product is ok. I bought these pens for my classroom to be included in my “store.” A couple of pens did not work, so that’s why I could not give this product 5 stars.
AuntGigi
Reviewed in the United States on November 10, 2020
These pens all had plenty of invisible ink leaving marks that could be read several days later when the light was shined on it. All of the lights worked as well. The little notebooks were very tiny and thin, but gave the kids a tiny place to try out their new pens. We used them as a party favors at my sons birthday party. The kids actually complained about the “worlds tiniest notebooks” but were delighted with the pens. It filled the bill, the kids had a blast looking for clues and solving mysteries with these pens and the notebooks were just a filler prize that looked cute but weren’t very useful.
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