make slime science experiment


If you’ve looked for Elmer’s liquid glue at your local retailer lately you may have been surprised that they were out. All out. Everywhere.

From Michaels to Office Max and even Target, major retailers have been at a loss to keep Elmer’s stocked on their shelves. You might imagine this is the result of a production problem or shipping snafu. But it’s not.

It’s all because of Slime!

Yep, you read that right. It’s slime, the DIY craft-meets-science-experiment is so popular that Elmer’s can’t keep up. So grab some glue wherever you can (it doesn’t have to be Elmer’s) and give slime a try with your own kids, using one of the variations below.

Please note – this project isn’t for younger children, as it requires handling Borax. Please make sure your children don’t eat the slime and don’t leave younger children alone with it. If a child does accidentally ingest the slime, call the American Association of Poison Control at 800-222-1222 immediately.

Slime Ingredients:

  • Liquid glue
  • Borax detergent (note – you can substitute Borax for a liquid starch, like Sta-Flo, if you prefer)
  • Food coloring
  • Water
  • Stir stick
  • Bowl

how to make slime as a crafting project

Traditional Slime

Just squeeze the contents of a glue bottle into a bowl, fill the empty glue bottle with water, pour on top of the glue, and mix with a stir stick. Then, stir in a few drops of food coloring.

how to make slime at home

In a separate bowl, mix 1 tablespoon of Borax into 1 cup of water.

making slime at home with simple ingredients

Then, slowly add a few drops of the Borax mixture into the glue mixture, mixing with the stick, until the combo starts to clump. Don’t put too much Borax in at once – it’s easy to ruin your slime! Continue adding Borax until your mixture is smooth, bouncy, and not at all sticky. (You can dump any excess water out of the bowl).

4 steps to making slime at home

Now play! Squeeze, stretch, roll, stamp with cookie cutters, place in a small glass and press with two fingers (if you’re THAT kind of family. We are.). Store your slime in a sealable plastic bag or container and you’ll be able to reuse it for several days, even a week.

Glitter Slime

Go for the glitter with this sparkly slime sometimes referred to as Unicorn Slime or Galaxy Slime.

The ingredients list and process are the same as above, substituting glitter glue for liquid glue and ditching the food coloring (glitter glue is available in a variety of colors including pink, purple, blue, and green). You can also shake in a bit of actual glitter as you’re mixing for some serious sparkle. Glitter Slime will be a different consistency than Traditional Slime – a bit more solid and dense – it even bounces!

Glow Slime

Turn out the lights for a night-time slime session with this recipe for glow-in-the-dark slime!

Choose neon green food coloring and add washable glow paint to the ingredients listed above. Mix the paint in with the food coloring, glue, and water then slowly add the Borax mixture, kneading with your hands until you’ve got your desired consistency. The phosphors in the paint will “charge” in the light. That charge energizes the phosphors’ electrons and the paint glows as the energy is released.

The glow is easiest to see in the dark, of course. When the glow wears off, simply turn on the lights to “recharge” your slime!

Ready for more at-home science experiments? Check out our Magic of Matter experiment and our Lava Learning Lamp experiment for preschoolers.