Invisible Ink Pen Secret Formula Disappearing Ink Pen, Blue

Need to leave a note for someone, but don't want to them to be able to show anyone else? The secret formula unique ink pen writes and looks like a regular pen to not draw attention. Great when you need to write something, temporarily.

This special formula was developed during the Cold War and is now encapsulated within the discreet gel pen for general use. Once on the paper, the ink will appear normal for about 15 minutes. Within an hour, the message will have completely vanished and will be unrecoverable; even with ultraviolet light!

Despite its unique capabilities, this pen looks and writes exactly like a regular pen and writes in a standard dark blue ink. Since it's a gel pen, it writes smoothly with a continuous flow, and has a long shelf life. It has a popular 0.5mm point size. It requires almost no downward pressure to write on the paper, so it's not necessary to leave indentations on the paper that could possibly be used to reconstruct what was written.

Note: deconstruction time of the ink will vary depending on ambient conditions.