Women Washing Their Hair Question Series, Volume 1 (humorous answers appreciated but not mandatory):
Women, approximately how long in minutes does it take to wash, dry and style your hair, and doesn’t that leave at least some time after it’s finished to do other things?
There are a lot of variables, such as hair length, hair type, air drying vs. heat drying, preferred style and styling tools and methods. It's an art and a science and this is true for both men and women. Some prefer a wash and go method and some take great pains with their hair.