How to make invisible ink in 3 simple steps | DIY for kids

by Kelin George

November 11th 2022, 10:08 am

Do you remember passing secret notes to your friends in class? Have you used invisible ink to keep your notes secret? Now that your kids are in school, you can teach them how to do this independently. 


While it is possible to go to the store and pick up a few pens with invisible ink, they may be laden with chemicals you don’t want near your kid. Here is a quick and easy way to make invisible ink using stuff around the house; it is safe and effective. 


What your child learns from this DIY:

Lemon juice contains carbon compounds that are colorless at room temperature. When lemon juice is exposed to heat, the compounds break down and release carbon. The carbon then oxidizes, comes in contact with air, and turns brown, making your messages written with invisible ink visible.


So, shall we send secret messages to someone with invisible ink?


With science on our side, let’s get to it! 


How to make invisible ink in 3 simple steps


Things you’ll need for the DIY:

  • Blank white paper
  • Lemons
  • Bowls
  • Cotton swabs or ear buds


Steps for DIY invisible ink:


Squeeze a lemon into a bowl.


With the cotton swab, write a message on paper and let it dry.


Hold the paper against a light bulb to reveal the message.


You can also use a hair dryer to reveal the message, but please ensure your child knows how to use handheld appliances.  

There you go! These were the quick and easy steps for making invisible ink with just lemon juice.


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For more exciting DIYs, explore today to find out how your child can learn by seeing, playing, and doing through our interactive app and hands-on activities on Magic Workbooks that encourage children to learn at their own pace alongside beloved Disney and Pixar characters and become lifelong learners.  


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