Is there a way to "bring back" the invisible ink from pens from kids spy-kits? Writings' faint cuz it got wet.

Answer 1

Don't know the specifics of the "spy kit", so I can only guess that the invisible ink you're using is water-soluble. If so, and the paper has gotten wet, then the ink has bled (wicked) out over the paper, and there is no way to return it to its original state.

Oh, sorry about that, Chief. (Do you remember "Get Smart"?)