If you want the #1 most popular, most searched, most tried homemade slime recipe, this is it! The latest slime craze has sparked tons of cool ideas, but we love to share simple slime recipes that are easy for all of you to create at home or in the classroom. Discover the best slime ingredients and achieve your perfect slime consistency. Read on to learn how to make slime solution slime recipe ideas! Because slime is science, and chemistry is cool!
LEARN HOW TO MAKE SALINE SOLUTION SLIME RECIPE!
BEST SLIME RECIPE EVER!
We have a whole bunch of slime recipes to check out, and I am sure you will find this is another awesome slime recipe to add to your files! Find the recipe for our newest slime and learn how to make saline solution slime with your kids! The videos are a must watch!
Slime may be a craze, but it’s also an amazing science demonstration. A demonstration of making slime is a great way to get kids excited about chemistry. Read more abut slime science at the bottom of this page!
I think the slime featured below would make an AMAZING unicorn slime recipe for all of your unicorn loving fans!
THE SCIENCE BEHIND HOMEMADE SLIME
What’s the science behind the slime? 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…
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 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!
Is slime a liquid or solid? We call it a Non-newtonian fluid because it’s a little bit of both!
HOW TO MAKE SLIME WITH SALINE SOLUTION
In the pictures below, we used our number one saline solution slime recipe. This is our #1 most viewed slime recipe, and we love it. Awesome stretchy slime in no time is my motto! Often times this will be referred to as slime with baking soda.
These are the best slime resources to look through before, during, and after making our homemade ocean slime! We talk more about slime science at the bottom of this page as well as additional slimy resources.
Did you know that slime aligns with NGSS! Take slime into your classroom and use it to demonstrate states of matter! (NGSS 2-PS1-1)
INGREDIENTS TO MAKE SLIME
1 tablespoon Saline Solution (must contain boric acid and sodium borate)
*We do not recommend using contact solution. We use Target brand sensitive eyes saline.*
1/2 cup of Water
1/4-1/2 tsp Baking Soda
Bowl, Measuring Cups, Spoon
SALINE SOLUTION SLIME RECIPE WITH STEP BY STEP PHOTOS
Find written recipe instructions and step by step video of me making saline solution slime from start to finish.
First, you want to add glue, water, food coloring, and glitter to your bowl and mix well to combine all the ingredients!
Choose your favorite slime color. Neon green is a classic slime color all by itself and reminds us of the Ghostbusters!
Be generous with the glitter but a little bit of color goes a long way with clear glue. If you have to use white glue but want rich colors, you will need a lot more food coloring!
SLIME WITH BAKING SODA
Baking soda helps to firm and form the slime. You can play around with how much you add but we prefer between 1/4 and 1/2 tsp per batch. I get asked all the time why do you need baking soda for slime. Baking soda helps to improve the firmness of the slime. You can experiment with your own ratios!
BAKING SODA SLIME TIP: Clear glue slime usually doesn’t need quite as much baking soda as white glue slime!
The saline solution is the slime activator and helps the slime to get its rubbery texture! Be careful, adding too much saline solution can make for a slime that’s too stiff and not stretchy! Read more on this below!
You really have to give this slime a fast stir to activate the mixture. But the slime will form fast enough and you will notice the thickness change as you stir it. You will also notice the volume of your mixture changes as you whip it up.
This slime comes together quickly and it is so much fun to play with too. Once you have made your batch of slime, check out the science behind the slime.
Slime is awesome for tactile sensory play, but make sure to wash hands and surfaces after making and playing with slime.
Make a few batches in different colors and swirl them together as shown in the cover photo or below! Think of what other color combinations your kids would enjoy. Slime making is only limited by the imagination of the hands creating it!
SLIME RECIPE WITH SALINE SOLUTION – STEPS
*SLIME SAFETY: Slime is a chemistry experiment and should be treated with respect. Do not substitute slime ingredients and do not change our recipes. If you have sensitive skin, consider wearing disposable gloves or trying a safe slime recipe instead. Find out more about slime safety*
STEP 1: First, measure 1/2 cup of glue and pour into your bowl. Here we are using clear glue for a very bright translucent style slime!
STEP 2: To that, add 1/2 cup of water and mix the two ingredients together.
STEP 3: Once the two are well mixed, it’s time to add color and glitter. Here we used about 10 drops of red food coloring and a several good shakes of glitter. Don’t be shy with the glitter!
Make sure to stir well.
The next two steps are important to the forming of the slime itself.
STEP 4: Add a 1/2 teaspoon of baking soda to the mixture and mix it in. This helps the slime firm up a bit more and create a solid.
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 5: Then you will add one tablespoon of saline solution to the whole mixture. Make sure that your saline solution contains both boric acid and sodium borate for the best slime activation.
NOTE: We have also played around with adding less then one tablespoon of the solution, starting with 1/2 tablespoon and adding more if necessary. This slime will be stickier initially.
STEP 6: Let’s mix! Whip up your slime mixture in no time. You need to stir fast like you are trying to really whip up something!
The slime will begin to form immediately thanks to the mixture of boric acid and sodium borate that is present in the saline solution. These two ingredients are cross-linking agents that create your slime.
STEP 7: The final step is to knead your slime. Once the slime looks like it is pulling away from the sides and bottom of the bowl nicely, it’s time to pick it up.
SLIMY NOTE: This is the stickier of our basic slime recipes at first. Be careful not to put too much extra saline solution on the slime after it’s made as it will continue to stiffen. Kneading really helps to eliminate the slime and you can knead in the bowl if desired.
Squirt a bit of saline solution on your hands to reduce stickiness as you knead your slime.
STRETCHY SLIME vs. STICKY SLIME
Which slime is the stretchiest? This slime recipe is by far my most favorite slime recipe for stretchy slime!
A stickier slime will be a stretchier slime no doubt. A less sticky slime will be a firmer slime. However, not everyone loves a sticky slime! As you continue to knead the slime, the stickiness will lessen.
Tinkering with the baking soda and saline amounts will change the consistency of the slime to thinner or thicker. Keep in mind that any recipe will come out just a bit different on any given day. This is really a great chemistry experiment, and one of the things you will learn is that slime is meant to be stretched slowly.
STORING YOUR HOMEMADE 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. I love the deli-style containers in my recommended slime supplies list here.
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 as seen here.
When you are not playing with your slime, make sure to keep it in a container and covered!
LEARN HOW TO MAKE THIS SLIME RECIPE FOR QUICK SCIENCE!
MORE SLIME MAKING RESOURCES!
Everything you need to know about making slime is below! Did you know we also have fun with STEM and science activities too? Click on all the pictures below to learn more.
SLIME WITH SALINE SOLUTION IS JUST ONE OF OUR MANY SLIMY IDEAS!
Check out our BEST & COOLEST slime recipes by clicking on the photo below!