How do you make invisible ink?
To make invisible ink, mix equal parts baking soda and water. Write with a Q-tip. Let dry. To read, paint grape juice on it.
Answered by Wendy H. -
Older Answers
Use lemon or onion juice to write with and let it dry. To reveal the writing, heat the paper with a iron, or other heat source.
Answered by Elizabeth B. -
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