Mix 1 teaspoon borax with 1 cup warm water until fully dissolved
Mix 1 tablespoon baking soda with 1 cup warm water
Combine 1/2 cup liquid starch with 1/2 cup water
Mix 1 part saline solution with 1 part baking soda
Stir 1 tablespoon contact lens solution into glue-based slime mixture
Add activator slowly, a little at a time, until slime forms
Knead the slime after each addition
Stop adding activator when the slime is no longer sticky
Store activator in a sealed container
Keep activator away from children and pets