You could use:

Banana clips to hold it back,
half ups,
combs, or clips to hold it out of the way,
head bands,
Snoods-a type of decorative hair net sold on ebay in many colors,
regular hair nets,
or you can style your hair with hard hold gel, clip it back a bit, and not scrunch out the crunch til after work.

Most/all of these should hold your hair back so it doesn't fall on your customers while you are working. Let us know what you try and how it works for you.
Be Happy!

Type:2b/3ab?
Texture:Medium/fine
Porosity:Normal
Elasticity:Normal

Experimenting with too many products to name here. All this great info keeps my head spinning.