Having this issue myself today as a matter of fact.  I am beginning to truly despise the part of the project which requires adding the hair.  Half the time the only way the hair works is if the shoulders are not moved one bit from the default position.  So you are forced to use hair that does not pass the chin.  Choices on that are slim.  Then there is the hair in the face issue. 

I hate hair!

I am:  aka Velocity3d