Invisible and luminous inks don't really have a lot of practical use for my line of work, but that doesn't stop their siren call. Who isn't intrigued by the idea of secret notes and hidden messages?
The top ink is Noodler's Blue Ghost, a completely clear ink that shows as luminous blue under blue light. It is completely waterproof, so can be used under further drawings.
The firefly is a yellow-green that luminesces under uv light- a colour I've always had a strange attraction to . As soon as they arrived in the post, I went over whatever drawings I could find, and added secret highlights and notes, for absolutely no reason at all other than the irresistible mystique of Invisible Ink.
|Just a normal sketch..|
|..but turn on the little blue torch-secret ghostly sparkles|
|just a sketch on plain paper...|
|..but turn on the blue torch, and you'll feel like joining the CIA|
|blue light with lights out-totally brings out my inner raver|
|also got some Noodlers fountain pens- very good and inexpensive|
|Noodler's Firefly- Irresistibly radioactive green|
|Noodler's Blue Ghost under blue light|