The most private (and fun) diary in the world! With this amazing, award-winning invisible diary set, snoopy siblings can´t read anything you´ve written! That´s because whatever you write in the blacklight diary with the Ultra-Secret Pen, can only be seen under blacklight. Of course, the blacklight and pen come in the set! Write invisible thoughts, draw invisible pictures, even doodle invisible tattoos.

Each set comes with a lockable journal, u.v. pen and u.v. light.