Homemade Invisible Ink and Glow in the Dark Message Recipes for Kids

Hey Kids, ever wonder how you can make your over own invisible ink or write glow in the dark messages?  Look no further these easy and fun to make homemade recipes will have you writing like a secret agent in no time.
Invisible Ink with Lemon Juice 1

Materials: 1 lemon cut in half, water, spoon, small bowl, cotton swab or Q-Tip, white computer paper, lamp

Step 1: Squeeze both halves of your lemon over the bowl.

Step 2: Add 2-3 drops of water to the lemon juice and mix with your spoon.

Step 3: To write your message dip the cotton swab or Q-Tip into the mixture and write your message on the white computer paper.

Step 4: To see your message hold your paper up to the light.  After a little bit your message will show up on the paper.

How does this work?  The lemon juice oxidizes (combines with oxygen) and turns brown when it heats up.  The light heats up the lemon juice enough for it to turn brown revealing your message!

You can also try this experiment using milk, grape juice, apple juice or vinegar.

 

Invisible Ink Lemon Juice 2

Materials: Lemon cut in half, bowl, cotton swab or Q-Tip, white computer paper, salt, wax crayon

Step 1: Squeeze both halves of your lemon over the bowl.

Step 2: Dip your cotton swab or Q-Tip in the lemon juice and write your message on the white computer paper.

Step 3: Before the lemon juice message dries pour some salt over the message.

Step 4: Wait about 2 minutes then wipe all the salt away.

Step 5: Color over the entire message with a wax crayon and your message will be revealed.

 

White Crayon Invisible Ink

Materials: white wax crayon, white computer paper, highlighter or water color paints

Step 1: Pressing hard write a message using the white wax crayon on your paper.

Step 2: Color over the entire paper with a highlighter or paint over it with water colors and your message will be revealed.

 

Glow in the Dark Message

Great for Halloween parties!

Materials: Petroleum Jelly or Vaseline, cotton swab or Q-Tip, blacklight, white computer paper

Step 1: Dip your cotton swab or Q-Tip in the Petroleum Jelly or Vaseline.

Step 2: Using the dipped cotton swab or Q-Tip write your message on the white computer paper.  Try to make the writing as smooth as possible getting rid of any bumps.

Step 3: Turn off all the lights and turn on the blacklight,  Your message will be revealed!