I have a friend who had it once in his twenties. Adults are diagnosed with herpes zoster. After using this formula, he recovered without leaving any scars. Formula: 3 Liang of castor bean (which is sold in Chinese medicine shops) and green radish leaves 1 are mixed together and mashed into mud, and then lightly rubbed on the affected area until it becomes red and swollen, twice a day. It will be fine in 5 or 6 days without any scars.