Elmer's glue (sometimes clear, sometimes white) is the main ingredient for slime, along with water and borax or liquid fabric softener — called "slime activators" in the slime world. slime activator that really works. How to Make Slime Activator at Home-slime activatior-slime activator which really work. How to Make Slime Activator - Very Easy! 1,211,435 views1. How to make slime activator at home slime activator- Success 100%!slime activator that.