Members - and little kids alike - love invisible inks and secret messages. I have a huge fondness for Noodler's Ghost Blue. After years of using different inks (I have now sampled more than a thousand unique inks), I was looking for my doodle with Noodler's Proctor's Ledge, so I had my notebook and a strong UV light. Much to my surprise, I found a whole lot of inks fluoresce. So, here is where we can show some pictures.
It doesn't matter if the ink was advertised as UV reactive ink - just show us what it is all about. This thread is not for full blown reviews, just show us the ink under blacklight (or blue light, uv-a, ultraviolet light, filtered light, mercury vapor, LEDs ... you get the idea).
Here is the first sample, Vintage Sheaffer Permanent Red. This ink was said to fluoresce AFTER someone tried to tamper with it. The middle ghost is untampered and the side ghosts have water washes.