fridge

I googled my question but I'm not getting the answer I'm looking for.  Must be the way I phrased my question.  But here's my question:  i love the egg wash effect on breads but I find I'm wasting too many eggs.  I know I can freeze egg white but for how long?

Also, can I store the egg wash I used tonite in the fridge for use again tomorrow or the next day?  Is it safe to use egg wash twice, bacteria-wise?

And how long can egg whites be stored in the freezer?  I know we can't freeze egg yolk.

Anyone with advice?

Many thanks.