Slime is one of my kids’ favorite things. They love the stretchy, gooey, and fun (as well as STEM learning) that slime provides. We’ve made a lot of slime recipes, and we almost always make slime for any upcoming holiday just for fun. Borax and liquid laundry starch are the two most common thickeners for slime, but some kids (and adults) are sensitive to Broax (laundry starch also has Borax in it). A borax reaction can cause itchy, dry, red, and peeling skin. For kiddos with more sensitive skin, alternative slime recipes must be found (like this delicious taffy slime!) and this baking soda slime.
For Earth Day, we made a version of slime that uses baking soda as the thickener, and the kids loved it. This baking soda slime is a little messier than traditional slime, but it’s a blast to make a play with and you don’t have to worry about it irritating the skin. Learn how to make slime with baking soda below!
THE ULTIMATE BAKING SODA SLIME RECIPE
THE SCIENCE OF BAKING SODA SLIME
Traditional slime is made when boron mixes with the polymer chains in the glue, creating strong, but flexible bonds between the molecules. But slime made with baking soda is a little different. In this version, ingredients in the baking soda bond with the glue to create a slime that is softer, stretchier, and a bit stickier than traditional slime. However, because most kids don’t have any sensitivities to baking soda, you can use it even with toddlers and preschoolers who might put the slime in their mouths. It won’t taste good, but the non-toxic slime ingredients won’t hurt the kids at all.
TIPS FOR MAKING YOUR BAKING SODA SLIME RECIPE A SUCCESS
If this is your first time making slime, you should follow along with our post on slime troubleshooting. Liquid laundry starch slime made with clear glue is the easiest slime recipe, but the baking soda slime recipe is pretty easy to make too!
If you don’t want to waste a lot of ingredients, try mixing up a small batch first to make sure you won’t have to tweak it before you make the larger version. We always stock up on gallon sizes of glue and the large laundry starch just in case something goes wrong (but it almost always goes smoothly).
HOW TO MAKE THE BEST SLIME MADE WITH BAKING SODA
Follow these directions and you’ll have the best slime made with baking soda ever!
How to Make Slime with Baking Soda and No Borax Powder
Baking soda slime is not quite as stretchy as traditional Borax slime. In fact, it reminds me of the gooey slime that Nickelodeon would always dump on people. The nice thing about this slime, however, it that it is SUPER easy to clean up out of clothing and the carpet. However, we recommend playing with it at the table and not around carpet or furniture.
What you’ll need to make slime with baking soda:
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Mix 1/4 of a cup of baking soda into two cups of warm water and set aside.
In a second bowl, mix 5 ounces of Elmer’s clear glue (it must be the clear glue) and your chosen color (we did purple).
Pour the glue mixture into the bowl of baking soda water.
The slime will start to form little balls in the water. Fish these out, and you’ve got slime.
Work the slime between your fingers to create a slimy, sticky texture.
If you want to be able to pick it up without it sticking to your hands, dip your fingers into the baking soda mixture. You can also add the slime back into the baking soda water if it loosens up too much.
This slime isn’t recommended for toddlers, as they might try to eat it.
This slime is perfect for using as a writing tray, or just for sensory, messy fun. Kids will love the sticky, gooey texture of this slime. My preschooler especially loved the squelchy sound it made when she squeezed it between her fingers.