Invisible ink is a enjoyable and simple option to write secret messages. You may make invisible ink utilizing supplies you in all probability have already got round the home, resembling lemon juice or vinegar. There are additionally a number of methods to disclose invisible ink, resembling utilizing warmth or ultraviolet gentle.
Invisible ink has been used for hundreds of years to ship secret messages. Up to now, folks would use invisible ink to jot down messages on paper, then seal the paper in an envelope and ship it to the recipient. The recipient would then use a particular chemical or warmth to disclose the message.
