There is a black mark on the left forehead, which is used for fortune telling.

There is a black mark on the left forehead that has nothing to do with numerology. Black print may be caused by sun exposure or wearing a hat for a long time, or it may be caused by impurity accumulation due to improper cleansing. It is recommended that you pay attention to daily cleaning to avoid long-term exposure to ultraviolet rays. In addition, if the black mark is large or frequent, please go to the hospital for examination in time to evaluate whether it is a lesion.