Although male and female pattern hair loss constitute two versions of the same underlying causative factors, the phenotypic expression is gender specific. This means that women typically retain their juvenile / feminine hairline but lose density throughout. Whereas men typically begin losing hair bilaterally across the front of their scalp leading to deep recessions that can progressively meet with a loss of density in the vertex or crown. Ultimately, in severe male pattern baldness the only remaining scalp hair is a very thin line in the occipital fringe and behind the ears. Women almost never lose hair in this way, but may continue to lose density until the underlying scalp becomes increasingly more visible. In our next blog post we’ll discuss this subject in greater depth.