how do you treat baby's diaper rashes?

My aunt, who is a nurse used petroleum jelly on my cousin when he was still a baby. She said it was to prevent diaper rashes, so it might just as well work that way. I actually try using petroleum jelly on light rashes sometimes and that seems to work well. The thing with petroleum jelly is the compound mix is very light so it would work best on babies since they still have mild skin.

Hi, whenever my daughter got some rases I tried to change her nappies often and left the nappies away for a few minutes so her button would get some air... It did help and I hardly ever put any cream on her nappy area...

There's a cream for that, I don't know what it's called in your country but it's called Vandol Cream or Desitin Cream here in our country it's a zinc oxide cream that is specially made for that. There are two types of Desitin, the cream or the gel, the cream works fast. I think you should try to apply those or the equivalent. It keeps babies from suffering from rashes and it has vitamin e that helps baby's skin heal fast. Here's a site for Desitin http://www.desitin.com/desitin-rapid-relief-cream