Is it fairly mild? I use cornflour on DD which if it is only a mild case, clears it up pretty much overnight. I also have a tube of Curash which is good when the cornflour isn't working, not that Ive had to use it many times.

I think Moo Goo (available online) is really great too, but you would have to wait at least a few days for delivery as I don't think you can buy it in stores, I could be wrong though.