Elephant Toothpaste Recipe: How to Make Homemade Foam

Looking for a fun science experiment to do with your kids? Look no further than the elephant toothpaste recipe! This easy-to-follow tutorial will show you how to make your batch of homemade foam in no time. Not only is this activity a lot of fun, but it also teaches kids about the chemical reaction between hydrogen peroxide and potassium iodide. Ready to get started? Let’s go!

What Is Elephant Toothpaste?

Elephant toothpaste is a foamy substance that creates when hydrogen peroxide reacts with potassium iodide. This reaction produces oxygen gas, which makes the foam. Elephant toothpaste is safe to touch and play with, making it a fun activity for kids. You can use elephant toothpaste to demonstrate the science behind exothermic reactions to young kids to ignite a thirst for science in them. More creatively, you may use elephant toothpaste for gender reveal or on other such occasions too.

How to Make Elephant Toothpaste

To make elephant toothpaste, you will need:

  • A clean, empty plastic bottle
  • A funnel
  • Hydrogen peroxide (you can find this at the drugstore)
  • Liquid dish soap
  • Food coloring (optional)
  • Potassium iodide (you can find this online or at a science supply store)

Here’s what you do:

  • Pour two cups of hydrogen peroxide into the bottle using the funnel.
  • Add a squirt of liquid dish soap.
  • Optional: add a few drops of food coloring to make a batch of color foam.
  • Slowly, add one tablespoon of potassium iodide to the mixture. Be careful not to pour it too quickly, or the mixture will foam over.
  • Now, just stand back and watch the magic happen! The reaction will create a lot of foam that will pour out of the bottle. Once the foaming has stopped, your elephant toothpaste is ready to play with.

Now that you know how to make elephant toothpaste, try it out for yourself. This is a fun activity for kids and adults alike. Be sure to have plenty of paper towels on hand to clean up afterward.

Precautions While Making Elephant Toothpaste Recipe

Since this is a chemical reaction, there are some things you should take care of while performing it. Here are some tips:

  • Wear gloves and safety glasses while handling the hydrogen peroxide.
  • Add the food coloring, yeast, and warm water to the empty soda bottle first. Then, very slowly pour in the hydrogen peroxide.
  • Do not let the foam come in contact with your skin or clothes.
  • When you are done, pour the foam down the sink and rinse everything with cold water.


This is a simple and fun experiment that you can do at home with your kids. All you need is some hydrogen peroxide, dish soap, and yeast. Be sure to do this experiment in a well-ventilated area, as the foam can get pretty high.


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