Inga Howe-Geniesse

Send A Secret Valentine With Invisible Ink (Made From Lemons)

When life gives you lemons, make invisible ink! This Valentine’s Day, use lemons to send a secret message. This fun, easy DIY gets Lil’ Sprouts in the kitchen and curious about the different ways they can use items from their home and produce from their garden in new and exciting ways.

Invisible InkInga Howe-Geniesse


  • Lemon juice
  • Paper
  • Heat source

Invisible InkInga Howe-Geniesse

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  1. Squeeze lemons into a small bowl.
  2. Using a brush, write or draw your secret message in lemon juice. We recommend using the ink for paintings and pictures, rather than any fine print or script.
  3. When you are ready to reveal your note, simply hold it close to a heat source–just be careful not to burn it away!
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