I've said it a few times this week . . . WE TEACH OUR CHILDREN PERSONAL HYGIENE.  They are not born knowing how to manage this.  Our children all shower at night.  It's great with one exception, they all wake up with crazy hair.  I keep a small spray bottle with water in it and a brush in the kitchen.  They all (with the exception of Harvey who recently asked for a buzz cut) spray and brush out their 'sleep hair' every morning.  It's super simple and I think it's very important to teach our children how to take care in their appearance.