Hi everyone!

 

I know that there is invisible ink that you can see with a black light, but does anyone know if there is invisible ink that you can only see with special glasses and you don't need a blacklight for?

 

Would appreciate any help on this!

sort of but it relies on a humans crap vision. if you have an ink thatreflects primarily in one bright colour(say orange) and also in another similar colour but not as well(say yellow-orange) and put it on an orange background so it is impossible to see the difference some specs that filter out orange light will allow you to read the text much easier than without.

 

dunno if this is what you wanted but it does kind of work.