Why do you have white eyelashes?

I can't say why you have a white eyelash but in Chinese and some African tribal culture white eyelashes are believed to be good luck. They are also attached to their own blood vessel and this would attribute to its possible rapid growth in comparison to your other eyelashes. It shouldn't be plucked because it can cause damage to the eye. But the occassial trimming to keep it tame wont cause any harm. Just be careful to not stab yourself in the eye with the scissors.