The Secret Messages Behind Invisible Ink Tattoos

Photo by Kristina Flour on Unsplash

“Our bodies were printed as blank pages to be filled with the ink of our hearts.” — Michael Biondi

Did you ever play with invisible ink as a kid or learn about how important it was to secret communications from the American Revolution through both World Wars?

Invisible ink has actually been used since the 4th century BC. People discovered they could write…