The advice of doctors is to ignore baby acne, bathe your baby normally, don't pop the tiny zits and it will go away eventually. It doesn't hurt the baby, and it's entirely normal. This is 100% true - IF your baby has baby acne. But your baby's little white pustules may not be baby acne. You can treat this type of baby "acne" easily, without hurting your baby in any way.
What is it that your baby has instead of baby acne? Thrush. Thrush is a yeast infection of the skin. Often you can tell because your baby has a white coating in its mouth that is not easily removed. However, you can also tell that your baby's acne is actually thrush if you see small white pustules on the skin, often on the face and neck, and around the anus. Thrush grows in warm, wet environments, so one clue that it's thrush is if you find collections of white pimples behind the ears, under the neck and in folds of skin. That doesn't mean that collection of zits on his cheeks are baby acne instead of thrush however. It may still be, especially if your baby's a spitter (those cheeks get wetter more often than you think).
How to treat this version of "baby acne?" With probiotic capsules, available at most health food stores and often now in grocery stories as well. Take a probiotic capsule, break it open and mix a little water with the powder in a small cup. Then put the paste on the "baby acne" and let it sit. Do this a few times over a few days and the "baby acne" should go away. Often babies do have true baby acne caused by the hormones passed to the baby in your breast milk, so don't expect 100% of your baby's pimples to vanish, but those caused by the yeast on his skin will go in 24-48 hours.
Probiotics are entirely safe for newborn babies and have been shown in studies when ingested daily to improve ezcema with long-term use. Don't be afraid to put probiotics on your baby's skin.