There's no real repair for a split end
except for a snip.
Ideal to catch it early
before the damage travels
fraying and weakening the whole strand,
ruining all of what came before.
Perhaps I am at fault,
for proper care would have 
prevented such.
But that is hindsight and now there is
split end after split end.
Too many build -
perhaps it would be better 
to chop it all off
and start fresh.

Holding on is sometimes a sunk cost fallacy.
Learn to let go.