Flash
Lost in speed
Dude, I'm not saying that Estrogen causes lighter hair colour. I am saying that they have higher estrogen than other women in general, making them...well...extra womanly. Most men know this genetically, but not consciously.
Estrogen is female sex hormone, for the record.
Am not trying to offend you, but your previous post means 'Blonde hair is a sign of higher Estrogen levels'. Read it again!
That's why i said Eumelanin.