Remind me to look at the back of my hair....

Can women not see the back of their hair - when the grey grows out?  I am sorry but I should tell you all right now, if this is ever me - please tell me!  I sat behind a woman at the movies the other day and I was just amazed that her daughter (I imagined) was sitting there enjoying the day with her mom (I imagined) and the poor woman just had awful hair.  It makes me wonder, it is easier to just ignore some situations when we get older than get in to a conversation about something that really doesn't mean anything - except to those of us that wish not to be in that situation some day.  Note to self, continue good personal hygiene.