Pour enough glue into the bottom of a container to cover the bottom. Make the glue about 1/4 inches deep. Add food coloring if desired. For this we put in 2 drops blue, 2 drops red.
Mix food coloring into glue. Add about 1.5x as much shaving cream as glue.
Mix together the glue and shaving cream. Add contact solution and mixing until your slime begins forming into a ball-like form as you mix.
Put slime on flat surface and begin working it with your hands. If it is too sticky, add more contact solution and knead it in.
If it’s too “watery” add some more shaving cream and knead it in. That’s it now Stretch, squeeze and play with new slime!