If you want to know how to make fluffy slime, you will want to read about our awesome fluffy rainbow slime or unicorn slime! We made these gorgeous rainbow colors that are light and fluffy thanks to an extra special ingredient and our favorite basic slime recipe. Make the colors of the rainbow and swirl them together or just make your favorite slime color with this easy fluffy slime recipe!

Easy Rainbow Slime With Shaving Cream

Our rainbow slime with shaving cream is one of our most popular slime recipes right now and it’s a cinch to make! All you need to do is pick up a can of foam shaving cream the next time you are at the store!

Oh and slime is science too, so don’t miss the great information on the science behind this easy slime below. Watch our awesome slime videos and see how easy it is to make the best slime!

Do you know we also do science experiments for kids and science experiments for preschoolers too?

Easy shaving cream slime with a rainbow of colorsPin

Basic Slime Recipes

Our easy, “how to make” slime recipes show you how to master slime in 5 minutes or less! We have spent years tinkering with our favorite basic slime recipes to make sure you can make the BEST slime every time!

We believe slime shouldn’t be disappointing or frustrating! That’s why we want to take the guesswork out of making slime!

  • Discover the best slime ingredients and get the right slime supplies the first time!
  • Make easy slime recipes that really work!
  • Achieve awesome slimy consistency the kids’ love!

Which Slime Recipe To Use?

We have several basic slime recipes that can all be used for this fluffy rainbow slime recipe. You decide which one works best for you depending on what slime activator you want to use. This allows for some flexibility depending on where you live in the world! Not everyone has access to the same ingredients!

Each of the basic slime recipes below have the full step by step photos, directions, and even videos to help you along the way!

Here we use our Fluffy Slime recipe with saline solution. Guess what makes the light fluffy texture? You got it, shaving foam! Slime with fluffy shaving foam and saline solution is one of our favorite sensory play recipes! We make it ALL the time because it is so quick and easy to whip up. Add color, glitter, sequins, and then you are done!

Rainbow Fluffy Slime

Helpful Slime Making Resources To Get You Started

These are the best resources to look through before, during, and after making your awesome fluffy rainbow slime scented! We talk more about slime science below too.

A Bit Of Slime Science

We always like to include a bit of homemade slime science around here! Slime is an excellent chemistry demonstration and kids love it too! Mixtures, substances, polymers, cross-linking, states of matter, elasticity, and viscosity are just a few of the science concepts that can be explored with homemade slime!

What’s slime science all about? The borate ions in the slime activators (sodium borate, borax powder, or boric acid) mix with the PVA (polyvinyl acetate) glue and forms this cool stretchy substance. This is called cross-linking!

The glue is a polymer and is made up of long, repeating, and identical strands or molecules. These molecules with flow past one another keeping the glue in a liquid state. Until…

You add the borate ions to the mixture,  and it then starts to connect these long strands together. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubbery like slime! Slime is a polymer.

Picture the difference between wet spaghetti and leftover spaghetti the next day. As the slime forms, the tangled molecule strands are much like the clump of spaghetti!

Is slime a liquid or solid?

We call it a non-Newtonian fluid because it’s a little bit of both! Experiment with making the slime more or less viscous with varying amounts of foam beads. Can you change the density?

Did you know that slime aligns with the Next Generation Science Standards (NGSS)?

It does and you can use slime making to explore states of matter and its interactions. Find out more below…

Fluffy Rainbow Slime Recipe

We changed around this recipe just a tiny bit by switching out white PVA glue for clear PVA glue! Usually, we make out fluffy slime recipes with white glue but clear glue works well too!

If you don’t want to make a rainbow of shaving cream slime, pick 2-3 colors that go well with one another. Remember that eventually, the colors will mix.


  • 1/2 Cup of Clear PVA Glue
  • 3 Cups of Foaming Shaving Cream
  • 1/4-1/2 Tsp of Baking Soda
  • 1 Tbsp of Saline Solution (contains both sodium borate and boric acid as ingredients)
  • Food coloring

How To Make Fluffy Rainbow Slime

STEP 1:  Measure 3 to 4 heaping cups of shaving cream into a bowl. You can also experiment with using less shaving cream for different textures!

shaving cream slime with clear Elmers gluePin

STEP 2: Now’s the time to add your color and mix into the shaving foam! Stir in 5 drops or so of your food coloring! We made 6 colors to represent the colors of the rainbow. Keep in mind the shaving cream will give your colors more of a pastel hue, but using clear glue helps them pop a bit more!

STEP 3:  Next, add a 1/2 cup of glue to the shaving cream and mix gently.

TIP: Don’t over stir your fluffy slime to keep all that air in there!

STEP 4:  Add 1/2 tsp of baking soda and mix. The baking soda helps to firm and form the slime.

mixing shaving cream slimePin

STEP 5:  Add 1 tablespoon of the saline solution (the slime activator) to the mixture and start whipping! Once you get the mixture thoroughly incorporated, you can pull it out with your hands!

Start kneading your slime! It will appear stringy at first but just work it around with your hands and you will notice the consistency changes. 

SLIME TIP:   We always recommend kneading your slime well after mixing. Kneading the slime really helps to improve it’s consistency. The trick with this slime is to put a few drops of the saline solution onto your hands before picking up the slime. However, keep in mind that although adding more activator (saline solution) reduces the stickiness, but it will eventually create a stiffer slime. You can always add but you can’t take away!

shaving cream slimePin

Rinse, and repeat with a new batch to make all the rainbow colors!

You will love how easy and stretchy this fluffy rainbow slime is to make, and play with too! Once you have your desired slime consistency, time to have fun! How big of a stretch can you get without the slime breaking?

strips of fluffy slime laid out on table in colors of rainbowPin

How To Store Slime

Slime lasts quite a while! I get a lot of questions regarding how I store my slime. We use reusable containers in either plastic or glass. Make sure to keep your slime clean and it will last for several weeks.

If you want to send kids home with a bit of slime from a camp, party, or classroom project, I would suggest packages of reusable containers from the dollar store or grocery store or even Amazon. For large groups, we have used condiment containers and labels as seen here.

We have the best resources to look through before, during, and after making your rainbow slime with shaving cream! Make sure to go back and read the slime science above too!

Rainbow Slime with Fluffy Shaving Cream Slime That's Easy To Make With KidsPin

More Fun Rainbow Ideas

More Fun Slime Recipes To Try

If your kids love playing with slime, why not try more favorite slime ideas…

Grab the Ultimate Slime Recipe Bundle

All the best homemade slime recipes in one place with plenty of fantastic extras!

What’s Included:

  • The Ultimate Slime Guide contains all the specialty recipes you or your kids want to make! You’ll find all the best tips, tricks, hints, and slime-y info in almost 100 pages!
  • The Ultimate Slime Holiday Guide covers all the best holidays and seasons with special themes and slime-y projects!
  • The Ultimate Borax-FREE and Taste-Safe Slime Guide shows you how to make all the best borax-free, taste-safe, and non-toxic slimes kids love, such as marshmallow slime. These recipes do not use chemical activators such as saline solution, liquid starch, or borax powder, making them truly borax-free.
  • The Ultimate Slime Coloring Book is an easy-to-print coloring book kids will love! Color and design your favorite slimes!
  • The Slime Starter Guide is a fact-filled information guide with everything you need to know to make the best slime ever!
  • Slime Science Project Pack helps you turn slime-making into a science lesson!


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