Absolutely agree with the other moms on this one! Just keep her face clean, and make sure you wipe off any formula and spit up that happens.
Her "acne" is just a Newborn's unbalanced hormones, and will straighten itself out shortly.
If it doesn't clear up by the end of the month, however, give me a call. My # is ###-###-####, and my email is ____@____.com'll discuss what may be in her environment that is causing the "acne" and go from there.
PS ... Baby "acne" doesn't necessarily mean she will develop a bad case of acne as a teen, either, so no need to stress out over it.
Congratulations on your baby girl! ~J.~