I can’t tell you how many times I’ve softened ice cream, only to need to refreeze it. Sadly, you know what happens. The edges of the ice cream become a hardened, freezer burnt nasty mess.
After watching an Alton Brown show about making ice cream, I noticed that he used saran wrap to cover the top of the ice cream to seal away air from getting to the ice cream. It works WONDERS..
You can also use this on store-bought ice cream. I love this nifty trick!