Oli's mum just remember you asked about the sore bottom for little A... Charlie too has the explsovie bottom but it's not sore. I remember with Aidan though he got nappy rash very young and my CHN asked me what i was eating. It turned out i thought i was being really healthy by eating my stone fruits but they aren't good for the insides of bubba's at all. Too young... So all i could say is have a look at what you're eating and change his bottom as soon as he is dirty so it can't get to his skin. I used the curash cream for Aidan and that always cleared up whatever he had. I think i remember seeing a tv add also where they say bepantham (sp) is good because it leaves a barrier when you apply it. Hope he's not sore for too long