Green tea The presence of polyphenols helps in keeping your scalp healthy. If your scalp is healthy, then the overall health of your hair improves, as it helps to keep your hair shiny and dandruff free. Dr. Sandeep shares a quick fix to treat your dandruff problem with this miraculous tea. Washing your hair with green tea or applying it on your scalp will help to kill your dandruff worries.Green tea is a type of tea that is made from Camellia sinensis leaves that have not undergone the same withering and oxidation process used to make oolong teas and black teas. Green tea originated in China, but its production and manufacture has spread to many other countries in Asia.