Heal cold sores
Like many cold sore home remedies, the flavonoids and caffeine in tea have been shown to inhibit the growth of the herpes virus; reportedly, Earl Grey tea bags seem to be the most effective. To get the full benefits of black tea here, at the first twinge of a cold sore you should apply a damp, cooled black tea bag to the area where you expect the outbreak to occur, and keep it on for 10 minutes. Repeat 3-to-4 times a day to help reduce the duration and severity of an outbreak. Tea can also treat canker sores (a shallow sore shaped like a crater (ulcer) on your tongue or on the inside of your lip or cheek.), which are equally stubborn.