Sounds like a great idea on the open wounds of nappy rash.

However, cornflower was recommended to me by my SIL when our first was born. My SIL gave me a shaker and a bag of cornflower when DD1 was born. She said it was recommended to her by fellow nurses at the hospital she worked at when she had her daughter. It works! Cheaper than all the creams, lotions etc. I've found that when nappy rash first appears a sprinkle on the area and the redness disappears fairly quickly. On the really nasty rashes with sores it goes after a day or two.