We often see men around us with “shedding”, but women rarely have it. That’s because women have more than three times less 5αC reductase in the hair follicles on the top of their heads than men. There is a cytochrome P450 aromatase in the scalp that is specifically found in the outer root sheath of the hair follicle, which is 2-5 times more abundant than in men. The role is to convert testosterone and androstenedione into estradiol and estrone. This is why there is relatively little baldness in women, and even when there is hair loss, it does not appear as “shedding” as it does in men. It is mostly scattered baldness, which is characterized by varying degrees of thinning of the hair.