"Silk-screened using a special ink, the book comes sealed in air-tight packaging that, once opened, allows the printed material to react with the atmosphere. The result is that after two months, the text vanishes."
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from “Book printed in ink that vanishes after two months” by Hemanth Chandrasekar at Springwise.com (July 5, 2012): “Buenos Aires-based bookshop and publisher Eterna Cadencia has released El Libro que No Puede Esperar—which translates as ‘The Book that Cannot Wait’”.
(via permanentbutter)