Bulldancer, please allow me to share the cure that I have found for scalp seb derm after realizing as we all do that the dermatologists can't do it for us. I put down my steroids, stopped washing my hair every day as directed, stopping using antifungal shampoos, and am free to have my life back. Here is what freed me:
BRUSH WITH A 100% BOAR BRISTLE BRUSH FROM THE SCALP TWICE A DAY. If you have long hair, brush all the way through the hair or only part of the way, just move the oil from your scalp. Brush very thoroughly and be sure to brush from the scalp. Natural boar bristles attract oils and move them from your scalp. I wash my hair every fourth day when it seems very dirty, because that is my preference. I use no special shampoo, but I wash, rinse, repeat, use conditioner but none on the scalp, and then rinse my scalp with clean water very well.
From the day I started this 10 or 11 months ago, I never picked up a specialty product again, other than to put it away in my bathroom closet.
Please spread this information. It has been a God send to me, and I feel that it is so important to share it with everyone. We all have something in common, but hopefully this helps you, and we can help others. If everyone posts it on one site it can help so many people. I created this account today for this purpose only, it is fast and easy to do on any site and will do so much good for so many.
God bless you, and thank you for sharing this info with other sufferers.