Fitness: Infant, Aquaphor

Aquaphor & Mylanta for Diaper Rash????

I read in either Parents or Babytalk that you can use a mixture of Eucerin Aquaphor and Mylanta on diaper rash and that it works great. Has anyone ever tried this? I'm about at my wits end with a never ending diaper rash on my daughter. It will go away for a day or two and then comes right back.