Ahh Growth hormones. it's a beautiful thing to be a woman, don't you think! Pigmentation from hormones can be observed on the forehead, cheeks, nose, upper lip and chin. While pregnant is's affectionately called the "mask of pregnancy" and ought to usually diminish after birth and lactationl is settled. When the hormones begin to level down.
http://www.getsunergetics.com/creme-ultime/