How do you tell when you run out of invisible ink?
I swear, half the questions are these sites are so halarious XD the invisible ink... are you talking about that stuff you need to shine in the forensic light to see? I think you can use your own spit to write that stuff
Well its only invisible on the paper. Water isn't invisible, it's see through. You could do everything to make your ink invisible but you could still see it in the pen or pot. Otherwise there is no such thing.
there is no ink! that is invisibel !! wait...water is invisibel.right?
anyway ,ther is lemon juice, milk, orange juice etc... used to make invisibel ink!
Oh;and. Invisible ink isn't invisible. You can see it with a special light. =D
um he was joking... but I suppose youd have to memerize what it smells like?