How to Make an Invisible Ink Message1
How to Make an Invisible Ink Message
Squeeze the juice of half of a lemon into a bowl.
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Add a few drops of water.
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Dip a cotton swab into the lemon juice mixture and write a message on a piece of white paper.
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Allow the invisible ink to dry.
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Hold the paper that contains your invisible ink message over a light bulb or flame/candle.
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