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How to Make Invisible Ink for Writing Top-Secret Messages

Create your own top-secret notes with this simple technique using grape juice and baking soda.

For the chance to win a cool spy prize, click here to read the rest of our invisible ink message.

WHAT YOU’LL NEED TO MAKE INVISIBLE INK

  • 1 tablespoon of baking soda
  • ¼ cup of water
  • Grape juice concentrate
  • Paintbrush or cotton swab
  • Paper
  • Two small bowls

HOW TO WRITE A SECRET MESSAGE WITH INVISIBLE INK

Step 1 for Invisible Ink

1. Mix the baking soda and water in a small bowl. This is your invisible ink.

2. Dip a finger, cotton swab or paintbrush into the “ink.”

Step 2 for Invisible Ink

3. Write your message on a piece of light-colored paper.

4. Let it dry completely.

HOW TO REVEAL AND READ AN INVISIBLE INK MESSAGE

Step 3 for Invisible Ink

1. Lightly paint grape juice concentrate across the paper with a brush.

Step 4 for Invisible Ink

2. Your message will slowly appear as the juice saturates the paper.

WIN A SPY PRIZE

For the chance to win a cool spy prize, click here to read the rest of our invisible ink message.

5 Comments on How to Make Invisible Ink for Writing Top-Secret Messages

  1. Minecraft,roadblocks, hello neighbor // March 16, 2019 at 1:27 pm // Reply

    Not the best it could ever be……..

  2. that is cool

  3. pickle me silly // February 2, 2019 at 11:36 am // Reply

    do you have to use grape juice?

  4. The secret words are to win a cool prize.

  5. Followed the go to instructions /ink
    But I Didn’t see anything new

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