Step-By-Step Slime Instructions

01
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Gather Your Slime Materials

To make slime, all you need is borax, white glue, water, and food coloring.
To make slime, all you need is borax, white glue, water, and food coloring. Gary S Chapman, Getty Images

Slime is easy to make. It only takes a few ingredients and a few minutes to make a batch. Follow these step-by-step written instructions or watch the video to see how to make slime. To get started, gather the following materials:

  • water
  • white glue (like Elmer's™)
  • borax
  • food coloring (unless you want uncolored white slime)
02
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Prepare the Slime Solutions

Mix the glue, water, and food coloring separately from the borax and water.
Mix the glue, water, and food coloring separately from the borax and water. Anne Helmenstine

There are two components to slime. There is a borax and water solution and a glue, water, and food coloring solution. Prepare them separately.

  • Mix 1 teaspoon borax in 1 cup of water. Stir until the borax is dissolved.
  • In a separate container, mix 1/2 cup (4 oz) white glue with 1/2 cup water. Add food coloring, if desired.
03
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Mix the Slime Solutions

When you combine the two slime solutions, the slime will immediately begin to polymerize.
When you combine the two slime solutions, the slime will immediately begin to polymerize. Anne Helmenstine

After you have dissolved the borax and diluted the glue, you are ready to combine the two solutions. Stir one slime solution into the other. Your slime will begin to polymerize immediately.

04
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Finish the Slime

Don't worry about the excess water that remains after your slime has formed.
Don't worry about the excess water that remains after your slime has formed. Anne Helmenstine

The slime will become hard to stir after you mix the borax and glue solutions. Try to mix it up as much as you can, then remove it from the bowl and finish mixing it by hand. It's okay if there is some colored water remaining in the bowl.

05
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Things to Do with Slime

Slime
Ryan likes slime. Anne Helmenstine

The slime will start out as a highly flexible polymer. You can stretch it and watch it flow. As you work it more, the slime will become stiffer and more like putty. Then you can shape it and mold it, though it will lose its shape over time. Don't eat your slime and don't leave it on surfaces that could be stained by the food coloring.

06
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Keep Your Slime

Sam is making a smiley face with her slime, not eating it.
Sam is making a smiley face with her slime, not eating it. Slime isn't exactly toxic, but it isn't food. Anne Helmenstine

Store your slime in a sealed ziplock bag, preferably in the refrigerator. Insect pests will leave slime alone because borax is a natural pesticide, but you'll want to chill the slime to prevent mold growth if you live in an area with high mold count. The main danger to your slime is evaporation, so keep it sealed when you're not using it.