Invisible Ink

What You Need:

• Paintbrush or toothpick
• Lemon, orange or apple juice
• Paper
• Table lamp or clothes iron

Instructions:

You can write secret messages using fruit!

1. Dip your paintbrush or toothpick into lemon, orange, or apple juice and write your message on a sheet of paper.
2. As the liquid dries, it will disappear.
3. Give your message to a friend and have her warm the paper with an iron or hold it close to a warm lightbulb and your writing will magically appear!
4. Use caution while warming the paper.

Note:

This will not work over CFL or LED light bulbs that do not emit heat.