A woman's hair is, arguably, the most important part of her look. Beautiful clothes and makeup can only go so far if hair is aging badly. Moving through the many stages of life from puberty to menopause, your hair will change as you age. But not as much as you might think and not the way you might think. Stylist and trichologist Lisa Akbari tells women what happens to their hair, why it's happening and what can be done about it...