Pour 1/2 cup of white school glue into a bowl
Add 1/2 cup of shaving cream
Mix until smooth and fluffy
Add a few drops of food coloring if desired
Add 1/4 teaspoon of baking soda
Mix well
Add 1 to 2 tablespoons of contact lens solution containing boric acid
Stir until the slime starts to form
Knead with your hands until it is no longer sticky
Add a little more contact lens solution if needed
Store in an airtight container