February 15, 2014 by Anya VHow to Color Your Hair with Tea Most people do not know that you can dye your hair effectively at home without any chemicals. Just a couple of tea bags and some herbs will dye your hair naturally. This method is cheap and effective. How to Color Your Hair with Tea Boil one cup of water. Add 3 tea bags to the water and allow the tea to brew. Add one teaspoon of rosemary to the tea. Allow the tea to sit for 24 hours. Apply the mixture to your hair evenly as if you were applying regular hair dye. Leave it on for an hour. Rinse off with warm water. Do not shampoo your hair for at least 24 hours. Dark brown hair: Black Tea. Red hair: Rooibos Tea. Blonde hair: Chamomile Tea.