"The bounteous circulation and increased metabolism caused by pregnancy hormones are nourishing your skin cells."
Then it goes on to say....
"The extra nourishment however can however cause hair to grown in places you rather it didn't. Facial areas lips, chin, cheeks are most commonly plagued with this pregnancy induced hirsutism, but arms legs and backs can be affected too. Much of the excess hair disappears within six months postpartum, though some may linger a linger longer."