I have two students who are sisters, seven and five years old. I ask that my students with long hair pull it back for their lessons, just so it's out of their face. The seven-year-old was trying to put the five-year-old's hair in a ponytail.
Seven: Did you brush your hair today?
Five: Daddy brushed it.
Seven: *put-upon Daddy-doesn't-know-anything-about-hair sigh*