Have you ever wanted to send a secret message to someone that only they will know how to read? Or maybe you are looking for a new and secret way to hide your passwords to important computer documents. Or maybe you want to teach your kids a fun and new magic trick that they can have hours of fun with. Then learn how to create invisible messages. This technique can be used in countless ways in your magic shows. It can be done with close up magic, but also on a large scale, as long as you have the supplies. There are a few different techniques for writing and revealing invisible messages. Here are a few to go have fun with.
On a plain piece of white paper write your secret message with lemon juice or milk. Vinegar also works but isn’t quite as effective. Anyway, using a Q-tip, a fountain pen with no ink, a paint brush, or a feather, write your message using the liquid as your ink on a clean sheet of paper. Allow it to dry and it will dry invisible.
When you are ready to reveal your message, simply apply heat to the paper. The dried liquid will actually burn before the paper will and will show up in brown on the sheet. Use a hair dryer, a small flame (hold the paper about 4 inches away), a light bulb, an iron, or a hot oven for your heat source. Your message magically appears. Teach someone else this technique and you can send messages back and forth.
Some variations on this are using baking soda for your “ink”, then apply grape juice to the paper, and the message appears. This is a good strategy for kids since it doesn’t require using a heat source. Also you can use a clear wax crayon to write your message. Then using a highlighter pen, go over the written message and it appears. This is another safe one for kids and is reminiscent of decorating Easter eggs.
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