what is baking soda used for in slime?
Adding baking soda to your slime recipe helps it have more form and firmness. If your slime is too oozy-gooey, add another pinch of baking soda to help it firm up. Continue adding baking soda a pinch at a time until the slime is your preferred consistency. If it's too firm, add warm water, a teaspoon at a time.