Acording to Wikipedia....
-The first facial hair to appear tends to grow at the corners of the upper lip,
-It then spreads to form a moustache over the entire upper lip,
-This is followed by the appearance of hair on the upper part of the cheeks, and the area under the lower lip,
-It eventually spreads to the sides and lower border of the chin, and the rest of the lower face to form a full beard.