1,398,042 views 198 on YTPak
5,969 515

Published on 04 Mar 2015 | over 3 years ago

How to make your own invisible ink spy pen.
Write secret messages.
This is the UV ink I used: amzn.to/2e8FvNi (affiliate)
UV flashlight: amzn.to/2ecw2ox (affiliate)
Customize Your Hybrid Embed Video Player!

6-digit hexadecimal color code without # symbol.


Report video function is under development.


Loading related videos...