Most bottles of school glue contain 4 ounces (120 mL), which amounts to 1⁄2 cup (120 mL). If your glue says 4 ounces on the packaging, you can just empty out the whole bottle into the bowl! You can double the recipe and use 1 cup (240 mL) of clear glue and 1 cup (240 mL) of water. Do not use white school glue! Using clear PVA glue is the key to making this slime clear.
If you don’t have blue food coloring on hand, then try 1-3 drops of liquid watercolor paint instead. Don’t use acrylic paint, because you’ll end up with slime that isn’t see-through.
Be sure to use warm water! If you use room temperature water, the Borax won’t dissolve. If you’re doubling the recipe, use 1 cup (240 mL) of warm water and 1/2 teaspoon (2. 8 g) of Borax powder. Keep in mind that Borax can cause skin, eye, and lung irritation. Handle the concentrated powder carefully and keep it out of the reach of small children.
Don’t worry if there’s still Borax water left in the bowl. As long as the glue clumps together, you’re all set to go. Don’t whisk or whip the slime with the spoon as you stir it, or you’ll introduce air bubbles. Air bubbles will make ruin the crystal clear look you’re going for.
If there are any bubbles in the slime, let it sit in a plastic container for a few hours; they should disappear over time.
Make sure that your hands are clean before you play with the slime to keep it looking clear. If you store it properly in an airtight container, this type of slime should last at least 1 week, if not longer.
Be sure to use baking soda and not baking powder! They’re not the same thing.
The baking soda water activates the slime.
Discard the leftover baking soda water when you are done.
If you don’t have food coloring, use 2-3 drops of liquid watercolor paint.
You can use less water if you want thicker slime, or more water if you want thinner slime. Don’t stir too hard or too fast to prevent bubbles from forming.
If the slime starts to get too runny while you’re playing with it, try putting it back into the fridge or freezer for a few hours, and see if that helps.
Use a spoon to break up any clumps of cornstarch in the bowl.
As you stir, you will notice the mixture thickening. Warm water will prevent the cornstarch from clumping. [16] X Research source
If the slime feels too thin, add a little bit of cornstarch and keep stirring. If the slime feels too thick, add a little more water.
You can toss out the slime once it starts to look dirty.
