Natural Cures for Dandruff

Thank you for the input, my son has had a terrible case of dandruff for more than two years now, I tried tea tree oil before I ever read this and was not persistent with it. Now I know it's the apple-cider that works, makes a lot of sense and it's right in the kitchen, thank you.

I tried the Apple Cider/Peroxide treatment. It did not help my severe dandruff. I have tried everything available naturally and over the counter as well. Nothing helps. It may seem to help for a day or so, but then the severe itching and flaking returns in full force.

Rose could you tell me what bottle capacity should I use for filling with the mixture of borax rubbing alcohol and rosemary?