How to Make Fluffy Slime with Saline Solution

BySarah McClelland
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Learn how to make fluffy slime with saline solution for the softest, stretchiest homemade slime recipe kids love! This easy fluffy slime recipe uses shaving cream, glue, and saline solution to create a light and airy slime that’s perfect for sensory play, STEM activities, classroom fun, and hands-on chemistry.

Fluffy slime is also a fun way to explore slime science, polymers, non-Newtonian fluids, and beginner chemistry concepts while making one of the most popular slime recipes ever.

💡 Grab the free Slime Science Starter Lab below to turn slime-making into an easy science investigation!

fluffy slime with shaving creamPin

Easy Fluffy Slime Recipe

Upgrade your regular slime recipes with one simple ingredient: shaving cream foam! Learn how to make fluffy slime with saline solution using just a few simple supplies.

What Makes Fluffy Slime Fluffy?

The secret to fluffy slime is shaving cream foam! The shaving cream adds extra air to the slime mixture, creating a lighter, puffier texture compared to classic slime recipes.

Saline solution acts as a slime activator by helping glue molecules bond to form slime. This process creates the stretchy polymer texture kids love.

Fluffy Slime Ingredients

  • 1/2 cup white washable school glue
  • 3 cups foam shaving cream
  • 1 tablespoon saline solution
  • 1/2 teaspoon baking soda
  • Food coloring (optional)

Important:

Your saline solution must contain:

  • boric acid
  • sodium borate

These ingredients help activate the slime properly.

💡 Note: Saline solution and contact solution are not the same thing. We prefer saline solution because it is inexpensive and readily available. Try the Up and Up brand from Target or the Equate brand from Walmart.

ingredients for our fluffy slime with saline solutionPin

How To Make Fluffy Slime

STEP 1

Measure three heaping cups of foam shaving cream into a large mixing bowl.

💡 You can experiment with different amounts of shaving cream for different slime textures.

STEP 2

Add several drops of food coloring and gently mix.

STEP 3

Add 1/2 cup of glue to the shaving cream mixture and stir gently.

How To Make Fluffy Slime With White Elmers GluePin

STEP 4

Add 1/2 teaspoon of baking soda and mix well.

💡 The baking soda helps firm and shape the slime.

Add baking soda t fluffy slime with saline solution to firm the mixturePin

STEP 5

Add one tablespoon of saline solution and begin mixing.

The slime will start pulling away from the sides of the bowl as it forms.

If the slime feels too sticky, add a few extra drops of saline solution.

💡 Don’t add too much activator! Extra saline solution can create rubbery slime instead of stretchy slime.

add the saline solution to the shaving cream mixture and mix it upPin

STEP 6

Remove the slime from the bowl and knead it with your hands until smooth and stretchy. Make a few colors and mix them together as we did below!

💡 Tip: Add a drop or two of saline solution to your hands before kneading to reduce stickiness.

son enjoying the stretch fluffy slime with saline solutionPin

Fluffy Slime Tips for Success

  • Knead the slime well before adding extra activator.
  • Add saline solution slowly to avoid rubbery slime.
  • Store slime in an airtight container.
  • Use foam shaving cream, not gel.
  • Different amounts of shaving cream create different slime textures.
kid stretching fluffy slimePin

Troubleshooting Your Fluffy Slime

  • Too Sticky? Add a few extra drops of saline solution and continue kneading.
  • Too Rubbery? Too much activator can make the slime stiff and rubbery.
  • Lost Its Fluff? Mix in a small amount of shaving cream and gently knead.
  • Not Stretchy Enough? Try adding a small amount of lotion to soften the slime.

👉 How to fix slime: a troubleshooting guide!

The Science Behind Fluffy Slime

Fluffy slime is a fun way to explore chemistry concepts like polymers, mixtures, cross-linking, viscosity, and non-Newtonian fluids.

When the borate ions in the saline solution interact with the PVA glue, the long polymer strands in the glue begin to connect. This process, called cross-linking, creates the stretchy, squishy slime texture.

In chemistry, a polymer is a long chain of repeating molecules connected together. White school glue already contains polymer chains, but they move freely in liquid form.

When saline solution is added, the borate ions help link the polymer chains together. This creates the thicker, stretchier slime texture.

The shaving cream adds air to the slime, giving it a light, fluffy texture.

Think about cooked spaghetti noodles. When they are loose in water, they slide around easily. Once tangled together, they become thicker and stretchier. Slime works similarly to polymer strands connecting.

Slime is also considered a non-Newtonian fluid because it can behave like both a liquid and a solid depending on the applied force.

👉 Learn more about the science behind slime and polymers here.

Chemistry Concepts Explored

  • Polymers
  • Cross-linking
  • Non-Newtonian fluids
  • Viscosity
  • States of matter
  • Chemical interactions

Explore Slime Science

Want to take slime-making further?

Grab our free Slime Science Starter Lab to explore polymers, slime activators, non-Newtonian fluids, and hands-on slime investigations.

Includes:

  • STEM challenges
  • Observation pages
  • Slime science
  • A 5-day slime chemistry lab

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    Looking for More Homemade Slime Recipes?

    Explore our complete collection of homemade slime recipes, including butter slime, clear slime, cloud slime, crunchy slime, glitter slime, and more easy slime recipes for kids.

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    Fluffy Slime FAQ

    Why is my fluffy slime sticky?
    Usually, the slime needs more kneading or a few extra drops of saline solution. Add activator slowly to avoid over-activating the slime.

    Why did my fluffy slime turn rubbery?
    Too much saline solution can overharden the slime, making it rubbery instead of stretchy.

    Does fluffy slime stay fluffy forever?
    No. The shaving cream slowly loses air over time, but the slime will usually remain stretchy and playable for several days when stored properly.

    How do you store fluffy slime?
    Store fluffy slime in an airtight container or zip-top bag to help keep it soft and stretchy longer.

    Can you make fluffy slime without saline solution?
    Yes! You can also make fluffy slime using liquid starch or borax powder as the activator.

    What is the best glue for fluffy slime?
    White washable school glue, such as Elmer’s glue, works best for making soft and stretchy fluffy slime.

    Is fluffy slime a solid or a liquid?
    Fluffy slime is considered a non-Newtonian fluid because it behaves like both a liquid and a solid depending on how much force is applied.

    What makes fluffy slime fluffy?
    Foam shaving cream adds air to the slime mixture, creating the light and puffy fluffy slime texture.

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    Our printable Slime Activity Pack includes step-by-step recipes, observations pages, challenges, and science extensions — perfect for home or classroom use.

    149 Comments

    1. My granddaughters and I just tried this and sad to say it was waste of supplies as it did not work

      1. There are several reasons why it may not work. Ingredients is crucial. Feel free to email me at getmovingfitness@gmail.com. You may find the liquid starch slime to be more suitable since their is not a variety of ingredients among brands.

    2. I used barbasol shaving cream, elmer’s glue-all multipurpose glue, cvs brand saline solution for sensitive eyes, bob’s red mill baking soda, and Wilton color performance gel food coloring. I mixed the ingredients in the order you said with the proportions you specified and it came out a blobby mess of shaving cream with some colored hard bits mixed throughout. I tried changing the order and played with the proportions; nothing’s working. Help!

      1. What are the ingredients in your saline solution? Thats usually the culprit. Also you want to use Elmers Washable School Glue not all purpose glue.

      1. Double check the ingredients in your saline solution. There should be a combination of sodium borate and boric acid noted in the ingredient list. Did you use Elmer’s glue? Please feel free to email me at getmovingfitness@gmail.com for more assistance.

    4. I tried making this and it didn’t work, it’s all shaving cream and glue it won’t clump together. I used all the ingredients it said to use and it still didn’t work out. 🙁

      1. Make sure the ingredients in your saline solution include sodium borate/boric acid as noted! These are crucial slime activator ingredients.

        2. It might depend on your saline solution. You can also squat a little on your hands before kneading it. The more you knead the less sticky it should get. Make sure you follow the measurements!

    6. I have all the ingredients except the saline solution, and I don’t want to buy a whole bottle. What can I substitute?

      1. You need something like saline solution, contact solution, or even eye drops to make the slime come together. The ingredients in the solutions are the slime activators like sodium borate and/or boric acid. Alternatively you can try our liquid starch or borax powder recipes. We purchased our solution at a local Target and it was target brand which made it quite affordable!

    7. My friend and I were very bored and decided to make slime. We went to the local dollar store and bought the indgredents needed. We put all the ingredients together and mixed thourghly. We added more of the solution but it ended up just being a big bowl or dyed shaving cream. This is by far one of the crapiest slime recipes I have ever attempted to do. I do not recommend this because it does not work!

      1. Hi, sorry you had a rough time, but dollar store glue doesn’t work. Try it next time with Elmer’s glue.

      2. My kids and I used this recipe, we bought everything identical to the ingredients list. It started out as a very gooey, sticky mess, but my daughter suggested using more saline solution. (She has watched a lot of videos on how to make fluffy slime) after adding about a tablespoon of saline, we had some pretty awesome, non sticking, fluffy slime. Even great grandma played with it! Thanks for the slime recipes!

    8. The reason the slime didn’t last is because you didn’t store it. My friend made fluffy slime and she was able to store it for at least a month. Thanks for listening to my comment!

        1. I also wondered why you left it just sitting out.lol Yes, as Emily’s comment stated, you need to store in an air-tight container or ziplock bag. It should last a lot more than a day ! Good luck, and thanks for the many cool recipes and science fun facts !

        2. Yes, we usually store our other slimes and they last for quite awhile. This was such a huge bowl full that I didn’t really think about trying to save it.

    9. Where do you get the saline solution from , and what type of glue sid you use (and can you use any ehote glue)

      1. We used Target brand saline solution. You need Elmer’s Washable School Glue but at least look for a PVA based glue to try.

      1. It may be the brand of ingredients you chose? I would need more information to help you.

    11. we made this and it didn’t come out right. The shaving cream just kept being squeezed out as we kneaded and handled it…so our hands were always soaked with the shaving cream and we had a mass that felt like chewed gum covered with foam

      1. The best piece of advice is to double check the ingredients. I just made a batch and it was super fun. Elmer’s washable glue, saline solution with sodium borate/boric acid, foam shaving cream, and baking soda!

    12. I tried to make this but it didn’t work… It was very liquid and wouldn’t form a ‘mass’.
      I’m not sure if it was the type of foam or glue that I was using that may have impacted on it but it just didn’t want to work! 🙁

      1. First make sure you added the baking soda correctly. Also let’s check the ingredients of the saline solution. It should have sodium borate in it or a mix of sodium borate and boric acid. Feel free to email me with questions.

        1. I have a boric acid bottle? Can I use it instead of saline solution? And the glue is it a PVA or what? Any type of glue?

        2. It is a PVA based glue. I am not familiar with a boric acid bottle and can not confirm that will work without having safely tried it myself. Although saline solution does have a percentage of boric acid/sodium borate in it, the ratio to other ingredients in the solution I am not sure with. Proceed with caution as we don’t recommend switching out ingredients.

    13. I am 10 years old and I love slime! I was so exited to make some slime so I went out and took all day to buy the ingredients. I thought this recipe would be good but sadly it didn’t work, I am a bit disappointed

      1. I would need to know you have the correct ingredients and that your saline solution contains sodium borate/boric acid. Make sure that you use Elmer’s washable glue too!

    14. I think the slime methods are really cool and are really fantastic! Keep doing what your doing!

        1. do you have a recommendation for a fragrance-free shaving cream? I tried the Barbasol, but the smell was so strong, so I switched to a lady shaving cream and it still is pretty strong. Any alternatives to shaving cream?

        2. I am sorry I don’t know of or have heard of any alternatives to using shaving cream to achieve the fluffiness. If you just want to make slime with saline solution and baking soda, we have recipes for that instead!

      1. It well help the mixture be more solid. We have experimented with varying amounts and found that just a little makes the perfect consistency.

        2. Oh thank you for catching that oversight! Please add 1/2 tsp. It isn’t much but it helps! Post is updated.

        4. It helps create a more solid mass so that it isn’t really sticky, but you can make it without it. Just keep in mind the texture differences.

        6. Yes all the slime needs to start with a clear or white washable PVA glue!

        10. I had to add more contact solution & it worked fine for me. It wasn’t working until I added more contact solution.

        11. Hello,
          My daughter has bugged me to make slime. So being a single father I looked into it. Kinda by the seat of our pants I purchased Elmers glue contact solution an shaving cream. Those were our ingredients.
          2- 7.65oz Elmers glue
          1- 4oz contact solution
          1/2 can Barbosal shaving cream (not gel)
          Mixed everything above In a large bowl. First added the glue then half a bottle of the solution an some shaving cream. As things mixed then proceed the add the rest of the solution an shaving cream. After about 20 min of mixing my daughter was able to remove slime from bowl an place on table. Then really began to kneed the slime. At this point it really begins to be fun. She loved it. Able to squeeze it, then quickly touching it the slime would come right off her hands. After an hour or so we stored in plastic container. Next morning had a few bubbles at top. Began to play with slime again no problems. No food coloring added or baking soda. Looks like white marshmallow fluff.

        12. Awesome recipe! We added a bit more saline though to stop the stickiness other than that we loved it! Thank you!

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