It is not recommended to do hair during menstruation, when women menstruation hormone levels in the body will change, mood fluctuations and resistance to decline, most of the hair dye, hair pulling the use of aromatic chemical agents on the human body have a certain degree of damage. In the process of doing hair at this time low resistance, the head of the pores, these chemical agents are more likely to enter the body through the skin through the blood vessels, thus causing damage to the human skin, head, face, and even the internal body. Moreover, the long-term use of chemical agents may also cause damage to the body’s blood system. Therefore, it is recommended not to do hair during menstruation, but to wait until after menstruation to do hair. It is also recommended to minimize the number of hair perming and dyeing to avoid damage to the body, and if you are allergic, it is even more unsuitable to do hair.