Science Friday: Invisible Ink


Happy Science Friday, Friends! Today we’re experimenting with INVISIBLE INK!

TRUTH: it was not as cool as I had hoped. I don’t know what I expected. Maybe I just believed it would be MORE dramatic than it was.

TRUTH: Who cares! It was still so fun for my littles! Little P exclaimed more than once, “I can’t even SEE anything I wrote! It’s totally invisible.” Plus, the three-year-old only lasts for so long in any experiment. 🙂

TRUTH: It was so simple to put together, I’d do this again on a rainy day in a heartbeat.

I hope you have a Fabulous Science Friday!

XX, Megan

To begin, there are several recipes for invisible ink, here. Pick you poison. We went with straight lemon juice. Gather a lemon, salt, paint brushes, paper, crayons.


Cut the lemon.


Squeeze 1/2 the lemon profusely, with great concentration, into a dish.




Commence in writing/drawing your SECRET MESSAGE in lemon juice on your paper.


When you are finished encoding your message, cover the lemon juice lightly in salt.


Dust the salt off after a few minutes, and allow the paper to dry completely.



Lightly color the entire picture/message/drawing. (That big Y on his paper was part of his SECRET MESSAGE!)


The SECRET MESSAGE should be a slightly DARKER than the rest of the color!


Science Friday, WE LOVE YOU!!!

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