Hi,
You could have seborrheic dermatitis, I had the same problems you did.
I use Organic Apple Cider Vinegar (Bragg's) for my seborrheic dermatitis and sensitive scalp. I typically take about 1/4 cup of Apple Cider Vinegar and 1/4 cup of water and mix it in a spray bottle (1 part to 1 part). I spray it directly on my scalp, by combing through the different sections. Then leave it on for at least 10-15 minutes. Then I rinse it out and use a mild shampoo & conditioner. The longer the better. Its best to do it on the weekends or at night because it does smell. (2-3 times a week) The worse you have it the longer it will take to see results. I started using the ACV because the Nizoral shampoo started making my hair really dry and brittle and it started to break and fall out. I have pretty oily skin and I needed to wash my hair every day. For the face, take a cotton ball and dab the mixture on the spots.
And make sure you dry your hair good, the moisture breeds bacteria.
Good Luck!