hair in mouth: perhaps it's long enough that idle movement and/or wind is simply unlikely to throw it into your mouth, but the fact that there is always some small amount of hair growing back after having been shed still leave something around to get in your eyes? And the hair long enough to get in your mouth is also long enough to be tamed by the rest of your hair?

Not sure. Totally guessing, in case you couldn't tell. My eyes seem to be protected from that, except if the wind is blowing hard. Perhaps it's my glasses helping out with that.