Today I have a fun little DIY from one secret agent to another. Perfect for writing secret notes to a friend, your partner in crime or just for fun and experimentation.

1. Materials: paper, lemon juice, small paint-brush or dip pen.
2. Write a secret message on the paper. Use the lemon juice as ink.
3. Let the ‘ink’ dry.
4. The message reveals when you hold it over a flame. I just used a stove.
5. Your secret message is readable. Have fun!

6 Comments

  • Reply

    Farjana

    June 17, 2011 at 16:49

    cool! i never knew lemon juice could do that.

  • Reply

    Mrsink

    June 17, 2011 at 19:42

    that’s so cool! :)

  • Reply

    tinajo

    June 18, 2011 at 08:50

    I´ve done this with my boys – it´s fun! :-)

  • Reply

    Heather

    June 19, 2011 at 02:59

    cute :-)

  • Reply

    A Splash of Ida

    December 1, 2011 at 20:54

    this looks fun!!! :-)

  • Reply

    shannah

    January 26, 2013 at 17:44

    This is amazing! I’ve never heard of it! I have penpals and I will def try this!!!!

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