Apple Cider Vinegar is a fermented-fruit tonic and it's benefits are endless. One of the most powerful benefits is for your hair. After shampooing, using Apple cider vinegar as your hair conditioner will add shine and help control dandruff. It's astringent properties help hair look shinier, and these same properties treat dandruff by reducing the fungus growth that causes the dandruff. When buying apple cider vinegar, your best choices should be made from brands that have been cold-pressed and are unpasteurized. Heat may destroy beneficial enzymes and nutrients.