Is this infant acne? What can I do to make it go away?

hmm.. looks like it could be heat rash. Looks like the first type that is mentioned in this article: http://www.healthline.com/health/heat-rash-pictures-remedies#Overview1 Keeping baby cool and dry is the simplest way to combat this. If it is baby acne, you can try using breast milk to help clear it. Just apply a few drops to the spots would do.

For fast effect and result which many mummies don't like but i can't afford to make it worst, as my girl have it really bad rashes, I use steroid cream given by the polyclinic, which is very mild one but effective and once recover i will stop using and always keep it as clean as possible.

Can try out physiogel AI cream, if not just keep using clean water and cotton balls to clean.

can get aloe vera gel from Chinese medical shop it's safe to use on bb