Mix ½ tsp baking soda into ½ cup warm water. Stir until fully dissolved, then let cool slightly.
Pour ½ cup of clear glue into a mixing bowl.
Slowly stir the baking soda and water mixture into the glue.
Add a few drops of food coloring (optional) and mix well. Now’s the time to add some glitter, confetti, beads, or any other trinkets of you want the slime.
Slowly stir in your contact lens solution (start with about 1 tablespoon). You’ll notice the mixture firm up and pull away from the sides of the bowl.
Knead the slime with hands until stretchy. If it’s too sticky, keep adding tiny amounts of contact solution until it reaches the desired consistency.
Notes
Check the label of your contact lens solution to ensure it contains boric acid or sodium borate. This is the key ingredient that activates the slime.