Making AMAZING slimeis all about having the right slime ingredients. The best ingredients include the right slime activator and the right glue. Find out what you can use to activate slime with this BESTslime activator list to get you started. I will also share some tips for making the easiest slime ever with these different slime activators. Discover how easy it is to make your own slime!
HOW TO ACTIVATE SLIME
PinWHAT IS SLIME ACTIVATOR?
A slime activator is one of the slime ingredients needed for the chemical reaction that takes place to form slime. The other important piece is PVA Glue.
Slime forms when the borate ions in the slime activator(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 also 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…
- NGSS Kindergarten
- NGSS First Grade
- NGSS Second Grade
WHAT CAN YOU USE AS AN ACTIVATOR FOR SLIME?
Our list of the best slime activators is below. Please note that the common ingredients in these slime activators are derived from borates and are in the boron element family.
If you want to get specific, that means you would not label any of these slime activators as borax-free. Find out more about borax free slime.
Note: Recently, we have used Elmer’s Magical Solution for making slime. While it does the job, it was not a favorite among my kid testers. We still prefer to use a good saline solution instead. You may need to add more of the solution than recommended.
1. BORAX POWDER
Borax powder is the most widely known slime activator and contains boraxor sodium tetraborate. It also has the most controversy surrounding it.
To make this slime activator, mix a small quantity of borax powder with warm water. Use this solution to add to your slime recipe.
You can purchase borax powder online or in the laundry detergent aisle of your local grocery store.
Click here for the Borax Powder Slime Recipe and Video
Pin2. SALINE SOLUTION
This is our number one favorite slime activator because it makes the most awesome stretchy slime. It’s also more readily available for UK, Australian, and Canadian residents.
NOTE: Your saline solution must contain sodium borate and boric acid (borates).
This slime activator is also commonly used as a contact solution, but I highly recommend picking up the less expensive saline solution instead.
We prefer Target brand Up and Up for Sensitive Eyes which you can order online. You can find the saline solution online or in the eye care section of your grocery store or pharmacy.
This slime activator does not need to be made into a solution first but requires adding baking soda for thickening.
You CAN NOT make your own saline solution with salt and water. This will NOT work for slime!
Click here for the saline solution slime recipe and VIDEO!
PinMake shaving cream slime or fluffy slime using a saline solution slime activator, too!
Click here for the saline solution fluffy slime recipe and video!
Pin3. LIQUID STARCH
Liquid starch was one of the first slime activators that we ever tried! It also makes an awesome, quick 3 ingredient slime. There are less steps for this recipe making it ideal for younger kids as well!
This slime activator contains sodium boratecommon to laundry cleaning agents. You can also find liquid starch in the laundry aisle of the grocery store. Common brands are Sta-Flo and Lin-it brands.
Note: You may need to add more Sta-Flo brand starch to your slime than Lin-It brand. Our stores carry Lin-It brand, so our recipes are based on that specific brand, which may be stronger than the other brand.
You can not make your own homemade liquid starch or use spray starch. Cornstarch is not the same as liquid starch.
Some slime recipes use a laundry detergent like Tide. I tried this type of slime recipe and found it irritating to the skin, so we did not make any more.
Click here for a liquid starch slime recipe and VIDEO!
Pin4. EYE DROPS OR EYE WASH
Last on our list of what you can use to activate slime is eye drops or eye wash. The main ingredient you will find in this slime activator is boric acid.
Boric acid is generally not found in a cleaning supply type of product as it is a preservative. It is specific to drops you put in your eyes as opposed to rinsing lenses.
Because eye drops do not contain sodium borate, you will need to at least double the amount you would use for our saline solution slime recipe. We made a DOLLAR STORE SLIME KIT with eye drops.
PinHOW TO MAKE SLIME WITHOUT ACTIVATOR
Can you make slime without a slime activator and glue? You bet! Check out our easy borax-free slime recipes below.However, do remember a borax-free slime will not have the same amount of stretch as slime made with an activator and glue.
We have many ideas for edible or taste-safe slime, including gummy bear slime and marshmallow slime! If you have kids who love to make slime, you should try making an edible slime at least once!
GUMMY BEAR SLIME
Melted gummy bears with a cornstarch mixture. Kids are sure to love this slime!
CHIA SEED SLIME
There is no slime activator or glue in this recipe. Instead, use chia seeds to make your slime.
FIBER SLIME
Turn fiber powder into a homemade slime. You would have thought!
JELLO SLIME
Mix up Jello powder and cornstarch for a unique type of slime.
JIGGLY NO GLUE SLIME
This recipe uses guar gum instead of glue. It really does work!
PinMARSHMALLOW SLIME
Slime with marshmallows instead of an activator and glue. You might want to eat it!
PEEPS SLIME
Similar to our marshmallow slime above but this one uses peeps candy.
There are many fun ways to dress up your homemade slime with color, glitter, and fun theme accessories. You can even make slime to give to friends, have parties, or put together a homemade slime kit for a great gift.
Printable Slime Recipes Ultimate Guide
This is the ULTIMATE collection of slime recipesevery kid wants to make! Explore the best recipes and find the right supplies to make slime time a breeze!
Perfect for kids of all ages, including tweens and teens! Taste-safe recipes are perfect for the youngest slime fans.
What’s Included:
- The Ultimate Slime Guidecontains 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 Guidecovers all the best holidays and seasons with special themes and slime-y projects!
- The Ultimate Borax-FREE and Taste-Safe Slime Guideshows 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 Bookis an easy-to-print coloring book kids will love! Color and design your favorite slimes!
- The Slime Starter Guideis a fact-filled information guide with everything you need to know to make the best slime ever!
- Slime Science Project Packhelps you turn slime-making into a science lesson!
