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How to Make Fluffy Rainbow Slime (without the mess)

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My kids love to play with slime! It’s one of our most used sensory materials in the classroom and at home.

We love finding new ways to play and encourage sensory play in the classroom, and our homemade fluffy rainbow slime recipe is always a crowd-pleaser.

If you’re looking for the perfect St. Patrick’s Day sensory activity, this fluffy rainbow slime recipe is the best and so easy to make!

Don’t miss our other fun slime recipes!

how to make rainbow slime fluffy

You can also make these slime recipes at home for science learning and play on the weekends, or during any holiday break.

Kids absolutely go nuts for the best slime recipes, and if you have slime lovers in your house, you don’t want them to miss out on making fluffy rainbow slime!

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time! #slimerecipes #slime #rainbow #kidsactivities

It’s the perfect way to entertain your kids you can also use rainbow fluffy slime as a St. Patrick’s Day STEM activity!

The Best Rainbow Fluffy Slime

Aside from this fluffy slime recipe, you won’t want to miss our other St. Patrick’s Day slime recipes: glitter rainbow slime, classic rainbow slime, rainbow bead slime, and lucky coin slime.

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time! #slimerecipes #slime #rainbow #kidsactivities

What is Fluffy Slime All About?

Kids absolutely go nuts for the best slime recipes, and if you have slime lovers in your house, you don't want them to miss out on making fluffy rainbow slime!

Fluffy slime recipes are about more than just having fun with stretchy, gooey slime.  Slime is a wonderful way to help children foster a love of science and chemistry.

The Science of Fluffy Rainbow Slime

Slime is formed when a chemical reaction between materials in the glue and the boron in the laundry starch or borax.

This reaction alters the chemical bond of the materials, combining them into long polymer chains.

This process is similar to how most flexible plastics are made today. Making a variety of slimes is also a good STEM activity experimenting with how different ingredients react to make a variety of slime textures.

Slime is also wonderful for kiddos who are sensory seeking, particularly for kids with SPD, autism, and ADHD.

If you need even more slime recipes to try, try experimenting with fluffy slime, taffy slime, borax slime, and baking soda slime!

Fluffy Slime Rainbow Tips

rainbow fluffy slime

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If you’re new to slime, definitely read our tips on how to make the perfect slime recipe every time. And if you need more help, check out these slime troubleshooting tips. 

If you’re in a bit of a rush though, just remember that brands matter when making slime. 

We will not make slime unless we have Elmer’s glue on hand, Good food coloring (that’s a brand we love), and Sta-flo laundry starch (unless we’re making an unusual slime recipe, like taffy slime).

While there are other ways to make slime, like with Borax powder  and baking soda (we’ve never gotten contact lens slime to work), laundry starch slime is by far our favorite, and we will always recommend using it above any other recipe.

homemade fluffy slime

CLICK HERE FOR CLASSIC RAINBOW SLIME!

Why is My Slime Sticky?

Sticky slime usually means you don’t have enough activator. Try adding a bit more.

If that doens’t work, you may need to add something dry, like cornstarch, to help reduce how sticky your slime is. I like to add either cornstarch or shaving cream to eliminate stickiness.

If you can’t get enough of this fluffy rainbow slime, try our lucky coin slime or solid gold slime! Read on to learn how to make your very own rainbow fluffy slime.

Why is My Slime Watery?

If your slime is watery, you may not have enough activator! Try adding more and stir and see what happens. If it’s still watery, you may need to add a little more glue!

MAKE SURE TO CHECK OUT: THE COMPLETE LIST OF ST. PATRICK’S DAY STEM ACTIVITIES!

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time! #slimerecipes #slime #rainbow #kidsactivities

Fluffy Rainbow Slime Supplies

We like to stock up on big containers of these ingredients so we’re always ready to make slime!

You will need:

  • Clear glue
  • Sta-flo laundry starch
  • Good brand food coloring
  • Glitter
  • Shaving cream

We like to mix our slime either in mason jars or in disposable cups, so we can just throw them out once the slime is done!

DON’T MISS: The Complete list of spectacular STEM challenges!

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time!

How to Make Awesome Rainbow Slime

If you need help with the recipe, check out our basic laundry starch slime recipe.  And if you’re still stumped, check out our slime troubleshooting guide.

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time!

For this slime recipe, you’ll want to have six containers for mixing your slime- one for each color.

You can use disposable cups, mason jars, or bowls, but if you use disposable cups, you can just throw them away and you don’t have to clean!

In each cup, you’ll want to put in one color of the rainbow (red, orange, yellow, green, blue, or purple), one part glue, and one part shaving cream.

Sometimes I double the amount of shaving cream for two parts, but sometime’s that’s a bit much.

Read our detailed fluffy slime recipe for more fluffy slime tips.

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time!

Fluffy Rainbow Slime Recipe

fluffy rainbow slime

Once your shaving cream and glue is mixed, it’s time to add the starch (you can also use contact lens solution if it contains a form of boron or boric acid).

Add starch slowly and keep mixing. If you add it all at once, the starch will be stringy, so add it a bit at a time. Once the slime is no longer sticky, you’ve added enough starch!

Stretch and play with the slime and have a rainbow of color to play with!

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time!

Pinch off small pieces to make a rainbow. When you mix them, the colors will slowly mix over time, but fluffy slime mixes more slowly than other colors.

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time!

And if you let a bunch of fluffy rainbow slime sit for a while, it looks like this!

Slime lovers will adore this fluffy version of rainbow slime! This fluffy rainbow slime recipe is super easy to make and it's less messy than many other slime recipes out there. Rainbow slime that is fluffy is fun and you'll learn how to make fluffy rainbow slime in no time!
slime science lesson

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