Hi steigerhome 123, I agree that it's an all over skin condition. Nice write-up too, especially this line, "Though not romantically involved, the fungus that can cause dandruff/seborrhea really loves sebum."
Malassezia is lipid dependent, which means it has to have oil to have any metobolic activity
Lotrimin Ultra also works on malassezia, and its OTC. Last year the FDA issued a Guidance for clinical trials involving this drug and malassezia, and I've tried it with good results.