You took the leap and decided to learn how to make homemade slime with saline solution. There’s a moment 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 homemade slime in a matter of minutes. The crowd goes wild, and you’re a hero.
EASY TO MAKE HOMEMADE SLIME WITH SALINE SOLUTION!
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 like these cool slime ideas.
Towards the bottom of this page, you will find some fun themes related to different seasons and holidays that we tried with this slime. 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!
There are also lots of slime making resources sprinkled throughout this page, so read everything carefully!
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.
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.
BEST SLIME INGREDIENTS AND SUPPLIES
The best slime recipes start with the best slime ingredients. I absolutely recommend you stock your slime making pantry with the recommended slime supplies found here. We turn slime fails into slime wins by telling you about the right ingredients.
Saline Solution (this must contain the ingredients labeled sodium borate and boric acid)
Elmer’s Clear or White Washable PVA School Glue
Food Coloring and/or Glitter and Confetti
Measuring Cups and Measuring Spoons
Storage Container (for storing slime)
MAKE HOMEMADE SALINE SLIME!
Now for the fun part! Follow our steps and pictures below to make this amazing stretchy slime the kids will go crazy for! Watch us make it live here.
- 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 BEHIND THE HOMEMADE SLIME RECIPE
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!
MORE SLIME MAKING RESOURCES!
Did you know we also have fun with science activities too? Click on all the black boxes below to learn more.
FAVORITE HOMEMADE SLIME THEMES
Below you will find some fun themes to give you creative ideas for your own slime themes. Holidays, seasons, and special occasions can all be made out of homemade slime! Click on pictures!
We will be adding a few more for the upcoming holidays. However, most of our fun holiday and season theme slimes can be recreated using this homemade slime recipe! CLICK ON PHOTOS TO READ MORE!