Want to be mysterious? Want to surprise your family, friends, and loved ones with this mysterious fountain pen ink? or do you want to just keep your writings private to yourself? then this Turritopsis Nutricula Invisible Fountain Pen Ink is your best friend. The gorgeous ink bottle's capacity is 18 ML. Also, you can choose between different bundles of the INK + the light and INK + Light and fountain pen.
It's time to be "invisible" :).