Activity: DIY Invisible Ink

Kids love making this DIY Invisible Ink and watching it disappear!
Materials:
- Baking soda
- Water
- Paper
- A cotton swab
- Grape Juice
- A paint brush
Wow-To:
- Mix equal parts baking soda and water to make some invisible ink.
- Dip a cotton swab into the invisible ink and use it to write a secret message on the paper.
- Let it dry completely.
- Give the message to a friend or family member. Be sneaky!
- Tell the recipient of the note that they can use the paintbrush to paint a thin layer of grape juice onto the paper to reveal the secret message! Wow!!!