Heartbleed Security Vulnerability Fixed   •   Get 2 Free Sick Science! Kits   •   Free Experiments by Email

On Monday we learned about a vulnerability in the encryption technology that effects most of the internet, called Heartbleed. Our team grabbed their lab coats and leaped into action to patch the vulnerability on our site.

We are happy to announce SteveSpanglerScience.com is no longer vulnerable.

While we believe we have kept out all the bad guys, we want to make sure our customer's information is safe. We are requiring that all of our customers change their password for their accounts on SteveSpanglerScience.com.

To do so, click the link below and enter in the email address associated with your account. Once you receive an email to that account, follow the simple instructions to reset your password.

Reset your password - https://www.stevespanglerscience.com/customer/account/forgotpassword/

If you have any questions on password resetting, please call our Customer Service team and they will be happy to help you. 1-800-223-9080

If you have any questions about the vulnerability please email security@SteveSpangler.com

As this did effect most of the internet, we also recommend that you change your passwords on all of the websites you visit.

Thank you for being an amazing customer!

-- The SteveSpanglerScience.com Team

Questions? Give us a Call: 1-800-223-9080

Invisible Ink Marker

This black light marker, can write invisible messages.


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Item #: WINV-102

Usually ships the next day.

Recommended for age 6 and up with adult supervision.

Availability: In stock

Invisible Ink Marker

With this black light marker, you can write invisible messages that will only be revealed under a black light. You can use it to make black light posters or for a demonstration of Ultraviolet Rays in your next science class. Invisible marker ink can be removed with soap and water. Use it with our personal Mini Black Light keychain. They're great together! Recommended for children ages 6 and up.

What's Included?
  • 2 Invisible Ink Markers
  • Activity Guide

NOTE: You'll need a black light to decode the message

Customer Reviews

Invisible Ink Pen Review by Michelle HAmpton

We used these at my daughter's 9th birthday party. The girls loved them. They were making mustaches and cat whiskers on their faces. They colored their finger and toe nails. Writing messages on their hands and legs was the obvious. Lots of giggles all evening long... (Posted on 5/18/13)

Nice Product Review by Derrick Jackson

The kids have really enjoyed the invisible ink markers. Trying to come up with other ways to use them. (Posted on 4/13/13)

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You're reviewing: Invisible Ink Marker

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  • Does this wash off?
    Yes, our markers are washable.


Warning - Choking Hazard