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How to Make Slime with Baking Soda and Toothpaste

If you have baking soda and toothpaste then you can quickly learn how to make slime with baking soda and toothpaste! Don’t believe it will work? We’ve tried dozens of slime recipes without contact solution and this is one of our favorites!

You won’t believe how easy it is to make slime with just two common household ingredients!

So, you want to make slime but you have no glue, and no activator. So are you out of luck? Not if you have toothpaste and baking soda!

How to make slime with baking soda and toothpaste! This recipe makes it easy to make slime without glue or contact solution.

Keep reading to find out how you can make slime with just two ingredients: baking soda and toothpaste!

You Can Make Slime with Just Baking Soda and Toothpaste!

When a person gets the desire to make slime, they want to make it right then! But what if you don’t have any glue, or you don’t have any contact solution, or any other traditional slime ingredients?

toothpaste for slime

Do you give up and go slime-less?

Never, of course. There is always another way to make slime.

And if you have baking soda in your kitchen and toothpaste in your bathroom, you can use our recipe to learn how to make slime with baking soda and toothpaste.

slime stem activity

How Can Toothpaste Turn into Slime?

There are three main ingredients in toothpaste that give it a slime-like texture. These ingredients are:

  • Glycerin – This ingredient is used to prevent the toothpaste from drying up and gives it a silky texture.
  • Cellulose gum – Cellulose gum is a natural binder and helps the toothpaste (and the slime made from it) bond.
  • Carrageenan – Carrageenan is extracted from red edible seaweed and is what really makes blue toothpaste gel-like and perfect for making slime.
Out of glue? You can still make slime! Learn how to make slime with baking soda and toothpaste right here!

All the baking soda does is make the slime less sticky so you can play with it like regular slime!

Slime Shopping List to Make Baking Soda and Toothpaste Slime

Here is what you’ll want to have on hand before attempting this creative toothpaste slime recipe, but you probably won’t even need to go shopping to make this unique slime recipe.

You will need:

That’s it! If you have those two things you are ready to make toothpaste slime.

How to Make Slime with Toothpaste

Watch the video to learn how to make baking soda and toothpaste slime.

toothpaste slime

Then scroll to the bottom of the post and get the precise measurements that we used when we made our toothpaste and baking soda slime.

If you get bored of making the same slime recipes over and over…

Even More Slime Recipes without Contact Solution!

Here are some of our favorite creative slime recipes that my kids love to make over and over.

baking soda and toothpaste slime

To make slime play more instructional and scientific, I created a science lesson, which you can download for free by clicking the link below!

slime stem activity

And here are the ratios I used to make the perfect toothpaste and baking soda slime recipe.

toothpaste slime

How to Make Slime with Baking Soda and Toothpaste

Prep Time: 5 minutes
Active Time: 5 minutes
Total Time: 5 minutes
Difficulty: easy
Estimated Cost: $10

You can make slime without slime activators, fancy ingredients, or even glue! Follow along with this toothpaste slime recipe and learn how to make slime with baking soda and toothpaste.


  • Baking soda
  • Toothpaste


  • Mixing bowl
  • Measuring cups and spoons
  • Stirring spoon


  1. Measure one cup of toothpaste into a measuring cup. This will probably take about three tubes of toothpaste.
  2. Add 1/3 of a cup of baking soda and stir.
  3. If the slime is too sticky, add more baking soda one tablespoon at a time until you have the desired slime texture.
  4. Be careful, if you add too much baking soda your slime will turn into play dough!
  5. The slime is ready when you can stretch it without it being too sticky on your fingers.
  6. Store your slime in an airtight container to keep it pliable.

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