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Make Baking Soda Toothpaste

Fifth Grade Recipes Activities: Make Baking Soda Toothpaste

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Looking to get away from all the chemicals in store bought toothpaste? Luckily, there's no need to head out to the health food store—it's easy to make environmentally friendly, chemical-free toothpaste at home using one of the most common, inexpensive pantry staples in the American kitchen: baking soda. Try this experiment with your kids to teach them the importance of knowing what's inside the food they eat and the products they use. Say goodbye to sodium lauryl sulfate and hello to simple living!

What You Need:

  • ¼ cup baking soda
  • 1 tablespoon salt
  • Water
  • Peppermint oil
  • Mixing bowl
  • Spoon
  • Toothbrush
  • Jar with lid
  • Measuring cups and spoons
  • Internet access (optional)

What You Do:

  1. Mix the baking soda and salt together in the mixing bowl.
  2. Add a few drops of peppermint oil to the mixture.
  3. Gradually add small amounts of water to the dry ingredients, stirring constantly as you do.
  4. Continue adding water until the mixture becomes a thick paste.
  5. Wet your toothbrush and add a pinch of the mixture to the bristles.
  6. Brush your teeth, rinse your mouth out with water, and analyze the results.
  7. End the activity by looking up the ingredients in regular, store bought toothpaste. Can you identify all the ingredients? Compare it to the toothpaste you just made and decide which you prefer.

There are lots of advantages to making your own toothpaste. Aside from the health and environmental benefits, it's also much cheaper than its store-bought counterpart.

Updated on Feb 18, 2014
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See more activities in: Fifth Grade, Recipes
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