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Lemon Juice Invisible Ink

2017-05-08 22:34:40Author:
[Introduction]  how to make Lemon Juice Invisible Ink with your playing cards? we let you know marked playing cards with luminous ink....

1/Squeeze the juice of half of a lemon into a bowl.

2/Add a few drops of water. Stir the juice and water with a spoon.

3/Dip a cotton swab into the lemon juice mixture and write a message on a piece of white paper. A feather, a toothpick, a fountain pen, a paintbrush or a calligraphy pen will also work in place of the cotton swab.

4/Allow the Juice invisible ink to dry. As the ink dries, your message will disappear.

5/Hold the paper that contains your invisible ink message over a light bulb or flame/candle. Keep the paper near the bulb or flame/candle until the message reappears. Be careful not to put the paper too close if you are using a flame/candle.

6/Juice Invisible ink is ok.

Published my comment
kuangmo zhang 2017-05-11 17:19:15

how to buy invisible ink cards from your website?

Oliver 2017-04-24 17:24:09

Your company Automatic tracking scanning camera can automatic any poker cards?