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Baking Soda Invisible Ink

1\Dip a cotton swab into a mixture of 1/4 cup (60 ml) of baking soda and 1/4 cup (60 ml) of water. Use the swab to write a message on a white piece of paper.

2\Wait until the ink is dry.

3\Dip a paintbrush into some grape juice concentrate or any dark juice. Paint the grape juice over your message and wait for the message to appear.

4\Use the Baking Soda Invisible Ink make with your playing cards, and you can see invisible mark with your eye.

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