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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 can play and learn secret agent skills with these pens, lay mystery adventures and writing clues for each other. Write 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 a partner, family or 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
Esmom
2025-08-08 15:49:12
Purchased for a science themed birthday party and all the kids (ages 10-3) enjoyed these!
Williams
2025-06-27 12:09:52
The kids loved
Cimmer
2025-05-23 14:28:40
I probably wouldn’t have purchased these if I’d known the batteries couldn’t be replaced once they burn out. That was very disappointing. I wanted these for use in classroom escape rooms. Hopefully, I can find a better product before these can’t be used anymore.
School mom
2025-04-02 19:28:24
I purchased this to add to gift bags for my daughter’s birthday party. We had kids off all ages, youngest being 4, oldest being 12. They all loved these and immediately started writing secret notes to each other. So fun and a great value!
Robert Panos
2025-03-24 11:49:48
Great product, fast shipping
Busymomof2
2025-03-08 18:50:09
The notebooks were smaller than I expected but my child was excited to give in a birthday treat bag. Pen & blacklight work great.
David S.
2025-02-14 09:28:36
Suitable for a 8 yer old and under bday party but not much more..
MzFancy
2024-12-19 14:08:54
My son and his party guest were thrilled to write in secrecy.
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