I struggled for months with SD on my forehead, eyebrows and upper eyelids. My forehead was the worst and I had to exfoliate twice a day to keep the flakes at bay. I tried applying ACV 3 times a day for a week to no avail. Knowing that yeast can't stand oregano oil and that tea tree is a major ingredient in most dandruff shampoo's, I decided to make my own remedy. In a 10ml glass roller bottle I mixed 3 drops of oregano oil and 5 drops of tea tree oil and filled the rest of the bottle with argan oil. Before bed, I rolled the oil on my forehead and rubbed it the area while working it down to my eyebrows and a tiny amount to my upper eyelids (do not get this in your eyes!) I did this for 3 nights and it was completely gone. I decided to do it for 2 more nights just to be sure. I haven't even seen a hint of flakes for 3 months but still have almost a full bottle left just in case.