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Anne Marie Helmenstine, Ph.D.

Let's Make Invisible Ink

By July 17, 2003

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When you get right down to it, there are a lot of substances that can be used as invisible ink. Some invisible inks work by causing slight damage to the paper, so that heating the paper burns the weakened areas to make the writing appear. For other invisible ink, you can write with a chemical that is invisible by itself, but which becomes visible when a second chemical is applied. Here are how-to's for some easy-to-make invisible inks:
You can even make ink that is invisible until it is held under a black (ultraviolet) light. If you have a black light, try writing a secret message using kerosene as an ink.

Comments

February 6, 2008 at 2:50 pm
(1) BECCA says:

I am doing a science fair project on invisible ink and i want to thank you for posting it on the web.
-Becca

March 18, 2008 at 2:11 pm
(2) Lydia says:

im doing a project on invisible ink and this info really helps!!! thanks!!!!!!!

January 7, 2009 at 11:40 am
(3) Emma says:

I am doing a scince fair project and this is perfect! Thanks for posting this on the web!

February 21, 2009 at 3:52 pm
(4) gabby says:

thanks alot for posting this..the nformation is very helpful for my up coming science fair

September 16, 2009 at 1:58 pm
(5) Stephanie says:

Hey! Thanks for posting this, it really helps when you have no idea what to do for a project. Thanks!

November 10, 2009 at 7:06 pm
(6) NOBEL says:

THANK YOU, THANK YOU, THANK YOU OMG, LOL, JJB, ABC, MSA, HSA

February 1, 2010 at 5:29 am
(7) Mister Lie says:

Miss Anne, I am a magician and would like to know how to make disappearing ink. Sold in small bottles at novelty stores. Problem is sometimes we buy plain water instead of ink as the ink due to long storage has changed into water. If only I could make it myself. Thanks. Best wishes! Mister Lie

February 17, 2010 at 7:45 pm
(8) tracie says:

WOW!!!!!!! IT SOUNDS A LOT OF FUN MY SON HAS A SCIENCE FAIR PROJECT DUE AND I THINK THIS WILL BE A WINNER THANKS FOR ALL THE HELP IN MY TIME OF NEED:)

August 29, 2011 at 4:30 am
(9) Katey says:

Thankyou verymuch

September 7, 2011 at 11:46 am
(10) salena says:

thanks for the great idea!!!!

October 4, 2011 at 9:05 am
(11) Isabella says:

THANK YOU THANK YOU THANK YOU!!! THIS IS SUCH AMAZING NEWS!!! I’LL BE SURE TO USE IT!!!

October 6, 2011 at 6:59 pm
(12) Sugar says:

Thanks very excited. i hope to win.

April 27, 2012 at 11:06 am
(13) cordi says:

im am doind a science fair project and i watn to thank u for all the help and info u gave me

April 27, 2012 at 11:24 am
(14) cordi says:

thank u very much for all he nfo u gave me

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