If male pattern baldness is caused by testosterone, why are hairs on top of the head more affected by it and hairs like eyebrows, beard, inside ears etc, are affected less?

Question

If male pattern baldness is caused by testosterone, why are hairs on top of the head more affected by it and hairs like eyebrows, beard, inside ears etc, are affected less?

In: Biology

Answer 1

Is there an explanation for why the line on my head between the **will-never-grow-again** to **full-monk-band-of-hair** is SO distinct? It’s perfect, almost as if it has been hemmed into my scalp.