Happily, I have found an all natural, inexpensive daily treatment that works. Twice a day, I apply apple cider vinegar to the problem areas of my face very thoroughly. As long as I do this daily as a maintenance, I see no symptoms whatsoever. I have been using this method for 2 years now. After several months of having it under control, I now typically just do it once (sometimes twice) a day and use white vinegar (not as effective, but less stinky). Again, no symptoms.
For my scalp, I use Nioxin Scalp Recovery medicated cleansing shampoo and conditioner. Been using it for 5 years. No symptoms, whatsoever. Previously I had red sores along my scalp line and dandruff like flakes.