My 2 week old has diaper rash! :((( what's the safest diaper rash cream to use? Anything else I should be doing?

Here's what the nurses at the polyclinic advise me when I asked previously. When baby poops, use cotton ball & water to wash baby's bum. Completely dry his bum before letting baby go butt naked for as long as you dare and then apply diaper rash cream. I am using Mustela diaper cream. It should clear in a few days. This way works for my son quite well :)