Secret Message Pen & UV Light

Secret Message UV Pen & Light

This cool pen writes invisibly - ink fades to zero in a minute - so you can surreptitiously mark all sorts of valuable stuff. Simply shine your mini Ultra-Violet key ring torch on the area you wrote and it'll light up before your eyes..

Great for:
* Secret messages
* Counterfeit detection
* Highlight books
* Security marking
* Glow in the Dark creativity

These secret writing pen sets have invisible UV ink in the pen and a UV Keychain light for revealing the hidden message. When you write, you can not see the writing with the naked eye. You must use the UV light to see what is written down. Will work on any paper and most surfaces. Great for sending your agent in the field secret messages only she can read!

Science Teachers: Good tool for teaching about valence electrons :)