It's mild, but seems to be spreading rapidly (even if quite mildly, so far).
We already use a non-bio powder; I haven't and won't introduce wheat or dairy into his solids; I'm using daktarin sparingly and a sort of random combination of diprobase, vaseline and (of all things) Aveda calendula nappy cream a couple times a day; he has diprobath in the bath which I'm mostly doing every 2nd day.
Anything else I should be doing?