Thank for the feedback!
I used the apple cider vinegar every other day for the first week, then slowly decreased to a few times a week.
It helped quite well at first, but proved quite difficult to maintain in the long term. Also results seemed to be less consistent as time went forward.
Dead sea salt followed by a good natural moisturising shampoo was easier and more consistent for me.
You can see some details of that method here.
Currently, however, I have not used any special scalp treatments for over 5 months.
All I do is wash my hair with a highly moisturising shampoo (this one to be exact: http://andalou.com/argan-oil-shea-moisture-rich-shampoo) and follow my current regimen I wrote about here.
My scalp is absolutely clear most days, but I find that if I don’t shower for a few days and let my scalp get greasy the flakes start to appear.
Massage deeply while you apply the shampoo also seems to help. Likely due to increased circulation.
Previously I even read of people getting rid of dandruff by using a boar bristle brush and regularly massaging/combing the hair/scalp.
Hope these details help.