This is the easiest invisible ink recipe with something from your fridge. Write a love letter to your child and let them find out what your secret message is. What would you write?
What you’ll need
- Cotton Buds
How to Set Up
- Dip a cotton bud in milk and write your secret message on a piece of paper. Wait until dry.
*The water in the milk will evaporate, leaving the fat on the paper. The chalk powder sticks to the fat more than the paper, thus revealing the message.
*I used whole milk. Skimmed milk with less fat may not work well.