Regarding sources of information on, refreshedskin.com, has been shut down.  My understanding is that the site was trying to commercialize the results  and information from the yahoo group of http://health.groups.yahoo.com/group/seborrheic-dermatitis-support/

I suffer from Sebborrheic-dermatitis myself, and have been using various medications over the last few years, with no relief.  I stumbled upon this yahoo group while doing an internet search for remedies..It has been very helpful.

I had an extremely flaky scalp.  Head and Shoulders and other dandruff shampoos (including a Ketoconazole shampoo) would not help.  Skin would also crust and flake off my eyebrows, forehead, beard area, and neck.  during the past 3 months or so, I have only washed my hair with apple cider vinegar.  No soap or shampoo.  i also use this vinegar to wash my face.  I have not had any dandruff since i started this regime.  I am also taking several vitamins, B complex and Biotin.   hope this helps