Your Seb Derm is likely not hormone related, and it is not a normal condition. I've had serious Seb Derm due to my intestinal candida overgrowth (result of anti-biotics). I've been keeping my SB under control by using a natural anti-fungal soap by Candida Freedom. Gets rid of 100% of my SB and about 80% of my dandruff.
I plan to use this until I fix my intestinal candida overgrowth.