Make invisible ink
Use invisible ink to write your own secret messages!
STEP ONE
Mix equal amounts of baking soda and water in a small cup.
STEP TWO
Write your secret message on paper using the mixture and the paintbrush.
STEP THREE
Wait for the paper to dry, then pass the note to your friend.
STEP FOUR
Please be respectful of copyright. Unauthorized use is prohibited.
To reveal the message, use a sponge or brush to paint the paper with grape juice.
WHAT'S HAPPENING?
Please be respectful of copyright. Unauthorized use is prohibited.
The slight acidity of the juice reacts with the baking soda to reveal your message.