You took the leap and decided to learn how to make homemade slime with saline solution. There’s a moment in this recipe when you wonder if it’s really going to come together, if it’s actually going to work. Your kids are wondering the same thing. Then it happens! You made the most awesome, perfectly stretchy slime recipe in a matter of minutes. The crowd goes wild, and you’re a hero!

EASY TO MAKE SLIME WITH SALINE SOLUTION!

Learn how to make homemade slime with saline solution for a super easy slime recipe that is amazingly stretchy. Making homemade slime is easy when you use our best slime recipes the kids love!

STRETCHY SALINE SOLUTION SLIME

This homemade slime recipe is my #1 SLIME RECIPE out of all our basic slime recipes. It’s stretchy, and it’s slimy. You can use it to make a ton of themes for holidays and seasons or use it as a base for more unique slimes.

Towards the bottom of this page, you will find fun variations related to different seasons and holidays that we tried with this slime. Actually almost all the slime themes you see featured on our website can be used with this recipe. I will leave the creativity up to you!

This homemade saline recipe is quick and simple, and it’s likely you already have the ingredients especially if you wear contacts. Saline solution is what is commonly used to rinse your contacts.

IS SALINE SLIME BORAX FREE OR A “SAFE SLIME”?

It’s important to point out this homemade slime recipe is technically NOT borax free. You will see many pictures on Pinterest labeling this type of slime the following: safe, borax free, no borax.

The main ingredients in saline solution (that actually form the slime) are sodium borate and boric acid. These are members of the boron family along with borax powder.

Saline solution is a user friendly recipe, and we love using it. If you have an issue with borax such as a sensitivity, please keep this in mind.

If you need borax-free, taste-safe, and non-toxic slime recipes, click here.

LET’S MAKE HOMEMADE SLIME!

Make sure to read through our recommended slime supplies  for your next trip to the store. You can see the exact brands we love.

If you want to put together a slime kit for your kids, check that out here. Also, if you want the fun labels and cards you see in the video, click here for your very own printable slime container cards and labels.

CLICK HERE FOR YOUR FREE SLIME RECIPE CARDS!

SALINE SOLUTION SLIME RECIPE

SLIMY SUPPLIES:

  • 1 tablespoon Saline Solution (this must contain the ingredients labeled sodium borate and boric acid)
  • 1/2 cup Clear or White Washable PVA School Glue
  • 1/2 cup water
  • 1/2 teaspoon baking soda
  • Food Coloring and/or Glitter and Confetti
  • Bowl, Spoon
  • Measuring Cups and Measuring Spoons
  • Storage Container (for storing slime)

INSTRUCTIONS:

Now for the fun part! Follow our step by step instructions below to make this amazing stretchy slime the kids will go crazy for!

STEP 1: Mix 1/2 cup of PVA washable school glue and 1/2 cup of water in a bowl.

STEP 2: Mix in 1/2 tsp baking soda. NOTE: We have been playing around with this amount!

Baking soda is a thickener. For an even oozier slime try 1/4 tsp and for a thicker/putty like slime add a 1 tsp to see what happens. Makes a fun science experiment!

STEP 3: Mix in food coloring and glitter.

STEP 4: Mix in 1 TBL of saline solution.

STEP 5: Whip up the mixture until you can no longer stir it and it has formed a slimy blob.

STEP 6: Knead until smooth and stickiness has disappeared.

TIP: Add a few drops of saline solution to your hands before picking up slime and kneading!

You can troubleshoot your slime recipe by clicking here. Double check you have the right ingredients and you are spending the time needed to knead your slime well!

STORING YOUR HOMEMADE SALINE SLIME

I get a lot of questions regarding how I store my slime. Usually we use a reusable container either plastic or glass. If you keep your slime clean it will last for several weeks. You may see a crusty bubbly top when you open the container the next day. Gently tear that off and discard for a super stretchy slime.

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. For large groups we have used condiment containers as seen here.

THE SCIENCE OF SLIME

What’s the science behind the slime? The borate ions in the slime activator  (sodium borate, borax powder, or boric acid) mixes 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. The addition of water helps this process.

When you add the borate ions to the mixture, it 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 is thicker and rubberier like slime!

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!

Read more about slime science here!

MORE SLIME MAKING RESOURCES!

Did you know we also have fun with science activities too? Check out our top 10 kids science experiments!

FAVORITE HOMEMADE SLIME THEMES

Ok you’ve made our basic saline solution slime now try one of these fun themes below. Click on the links for the full recipes.

Hopefully it will give you creative ideas for your own awesome slime themes. Holidays, seasons, and special occasions can all be made out of homemade slime! Click on pictures!

Easy Scented Fruit Slime

Glow In The Dark Slime

Monster Slime

4th of July Sparkle Slime Activity for Kids

11 Comments

  1. This slime was amazing after it was just made, we used clear glue for ours. However after sitting for several hours in a sealed container the water separated and I have a hard-ish blog of polymer and a big soupy mess of glittery water… any ideas as to why that happened? I have another I made using no water and less contact solution that held together well and didn’t separate but wasn’t as satisfying to play with when first made. Would love any ideas on how to keep our clear glue/contact lens slimes from separating out.

  2. Pingback: How to Make Slime
  3. Are you using contact solution or saline solution. I highly recommend saline solution!

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