Skip to Content

How to Make Gross, Creepy Zombie Slime Perfect for Halloween

Save this idea for later!

You can make this zombie slime any time of year, but we like to use it as a Halloween STEM activity.

Learn about polymer chains while pretending to be a zombie?

Who wouldn’t love that? It’s one of our favorite slime recipes for Halloween!

You can find more Halloween slime recipes here.

When October rolls around, it's time to celebrate all things creepy and gross, like zombies! This zombie slime is just gross enough to delight STEM lovers.

How to Make the Ultimate Zombie Slime Recipe!

“Grrr! I’m a zombie, I’m going to eat your brain!”

You’ll hear this often at our house, as we’re a bit zombie obsessed.

Even my preschooler is delighted by the concept of zombies and is ready to transform into a zombie at any moment.

Because my kids are so zombie-obsessed, of course, we had to add a zombie slime to our collection of slime recipes.

So now, we’re sharing the recipe with you!

Zombie Slime Science

When October rolls around, it's time to celebrate all things creepy and gross, like zombies! This zombie slime is just gross enough to delight STEM lovers.

Slime is made up of polymer chains that stretch when bound together. These chains are made when the chemicals in the starch mix with the glue (thanks to boric acid). The chains are still flexible, because polymers are flexible.

That means the slime will stretch instead of breaking when the slime is pulled.

Adding more starch makes the slime stringier, which adds to the grungy, zombie-like appearance.

What You Need to Make Zombie Slime

Before getting started, you’re going to want to have these supplies on hand to make your slime. Be sure to read our slime troubleshooting guide as well!

slime science lesson

Zombie Slime Directions Step by Step

This zombie slime is so much fun and terrifically gross!

When October rolls around, it's time to celebrate all things creepy and gross, like zombies! This zombie slime is just gross enough to delight STEM lovers.

For this recipe, you’ll need 1 part white glue, 1/2 a part water, and 1 part laundry starch.

Our zombie slime follows our liquid laundry starch slime recipe.

However, there is a twist. I added a tablespoon more starch to the mix.

This makes the slime stringier, which I thought was more zombiesque.

When October rolls around, it's time to celebrate all things creepy and gross, like zombies! This zombie slime is just gross enough to delight STEM lovers.

First, mix your food coloring, glue, and water together. Mix some drops of green, yellow, and brown to get the sallow green of a zombie in your slime.

Then, add the laundry starch.

You don’t want your slime to come together all the way for this recipe. It’s meant to be kind of wet and gross, just like we imagine a zombie would be.

When October rolls around, it's time to celebrate all things creepy and gross, like zombies! This zombie slime is just gross enough to delight STEM lovers.

Stretch and play with your slime until it becomes stringy and stretchy!

If your slime starts to lump together again, you can add more starch to make it stringy again!

slime science lesson

More Creepy Slime Recipes

Skull slime

Eyeball slime

Bubbling slime

Edible candy slime

Save this idea for later!