How To do Invisible ink?

I want to hide my notes,records on the paper.I don't want to use ink.I want to write with invisible I want to know how to do invisible ink?

blkhawk6 years ago
This has been answered before at this link
Kiteman6 years ago
Have you tried this link?
rickharris6 years ago
Lemon juice - develop via heat


Wet the paper - put a dry sheet on top and writ on it.

When he under paper dries it will be plain. wetting it will reveal the writing.