What use is it if it disappears after such a short period
what's that cd you got there
>take apart pen>take the ink cartridge out>empty the ink cartridge>pour some dissappearing ink inside the cartridge>close with tape>friend asks to borrow pen, i give them it>boom
"Hey can I borrow a pen for the test?" "Sure." 2 days later you are laughing while he punches your teeth out.
A Linux Mint installation DVD.
if it disappears after 5 minutes then how can we see it in the bottle??????