Yes Apple Cider Vinegar will help to get rid of dandruff.
To get rid of your dandruff with Apple Cider Vinegar you first need to wash your hair with regular shampoo and then either massage some Apple Cider Vinegar directly into your hair and then washing the Apple Cider Vinegar out or you can also mix equal parts of Water and Apple Cider Vinegar together in a spray bottle and spray the apple cider vinegar into your hair and let it sit for around 10 to 15 minutes.
Then wash the Apple Cider Vinegar out of your hair.