A little gimmick, especially for younger children.
Material / tools required
- Lemon/lemon juice
- Bowl/glass
- Paper
- thin brush
Instructions
- (Cut the lemon in half and pour the juice into a bowl/glass.
- Use a brush and lemon juice to write the secret message on the paper and leave to dry (you can also use a hairdryer).
- To make the message visible, heat the paper on a heat source (lighter, candle or iron). Beware of fire hazard!
Pictures
Picture credits
- Cover picture: © Claudia Hautumm / pixelio.de
- Images: Ramun Badertscher, www.ramunbadertscher.ch
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