99% alcohol is exactly what it says it is. The other ones tend to have things like oils & scents in them.
The oils prolong the desolving time, where-as the alcohol just evaporates.
So glue treated with alcohol will become sticky again when the alcohol has evaporated. Glue treated with the other stuff remains less tacky, more slimey.
But then afterwards, you have to wash the hair, scalp/base to get rid of those oils.

You shouldn't need to use alcohol to remove Got2B.
I thought the benefit of it was that it came off with rinsing it with water.