Invisible Writing

1 Tablet of laxative
1 tb Rubbing alcohol
Cotton balls
Household ammonia

Mash the laxative tablet into the tablespoon of alcohol. Be sure the tablet is entirely dissolved. Write a message on the paper with paintbrush dipped into the solution. As the solution dries, the writing will disappear. To develop the message: dampen the cotton ball with liquid ammonia and dab it on the page. The writing will reappear.

Invisible Writing printer friendly version located here. (Just the recipe. Nothing else.)
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