Invisible Ink
Out of context: Reply #2
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- neue75_bold0
not in water but you can get heat reactive inks...
see this promo book for the Sauna typeface – http://www.underware.nl/site2/in…
"This book is the first demonstration of Sauna. More than just a specimen, it is an in-depth investigation of the world of saunas. The typeface Sauna is presented in a context which is more broad than the world of typography, creating sensations of steamy pleasure not only in the minds of graphic designers, but deep inside those whose lives are not connected to ligatures and smallcaps.
The book was designed to withstand reading inside a sauna bath without any damage: it is resistant to hot water in its steaming, gaseous state at a temperature of 120 degrees Celsius/248 degrees fahrenheit. Even better, some parts of the book can only be read inside a sauna at a minimum of 80 degrees Celsius/176 degrees fahrenheit! So get the book, go to a sauna, and get the "live" Underware experience while reading.
You can buy this book in specialized bookshops all over the world. You can also purchase this book online at Nijhof en Lee (Amsterdam)."