Nothing.
There is nothing (nothing!!) that can be done in the face of this unmitigated disaster.
Nothing.

Look!  No on second thoughts, don't look! Take my word for it instead why don't you.  Learn from my mistakes.
When a hairdresser is in mid story about his trip round Nashville, and how he's got engaged and all. Don't listen to a word.
Do not take your eyes off the mirror
Do not ever on any account forget to tell him that the fringe must be past eyebrows.
Do not smile encouragingly and nod your head at the same time.

Because

Because otherwise you will end up with a runty fringe that makes you look like wee Jimmy Krankie

You heard it here first