7 Amazing Types Of Invisible Ink & How You Can Use Them

Invisible ink is the stuff of romantic legend. Spies and clandestine lovers alike have used it for centuries to convey hidden messages to their partners. Although invisible ink is still used today for these purposes, it has taken on many more practical and fascinating roles in recent years.

Hundreds of liquids, from fruit juices to specially formulated chemicals, can be used as invisible ink. Here we explore six of the most interesting and accessible types. We hope you’ll be inspired to make your own invisible ink at home. With a bit of practice, you too can become a master of steganography (which is the art of writing hidden messages, in case you didn’t know that already!) LINK