Jan. 2016 after many years suffering from stress; abuse ; injuries, (terrible care at nursing home ) ended up with very sever sebborhia scalp & facial dermatitis . I tried every thing spending days and hours searching websites. My best results is using silver solution. apply on face where it's needed after cleaning with gentle cleaner Not soap and NO OILS of any kind.I even need to apply to lips (which were peeling and turning a purple color) re-apply when needed (lips more often if you have that problem. Before I found silver solution was breaking out with pustules (gross) and had the typical redness on chin and nasals folds and behind ears, I use oreganol oil WITHOUT any olive oil added. With q-tips it burns the pustules off and leaves no scars. Used it on scalp too, scratch and combed out dandruff daily over black t-shirt (time consuming but worth the effort. because my dandruff stuck around hair follicles like glue. then shampoo with the only shampoo that worked (I tried so many) nizoral, DHF. etc: etc; everyone at drug stores. the one thats working for me is veterinary formula clinical care, (antiseborrheic medicated shampoo (don't laugh (for dogs) it's anti fungal 100% safe NO paraben dye, soap and oil free. I leave it on overnite (with a terry cloth head cover)find head cover at dollar store and Big Lots stores.
when hair drys can't tell you left shampoo on. no hair falls out even though you brush and fine tooth comb out vigorously. And hair is so soft. I was doing this daily. Now every other day. What an improvement! I'm also cutting out oils and fats from my diet except for 1% milk and looking or vitamins to help my immune system. I read it's a chronic condition but I want to cure it or at least have control over remission. GOOD LUCK to you.
PS….also make sure your body is not acidic