The hair can be done after the menstruation according to their own body condition to judge: 1, during the menstruation if there is no dysmenorrhea, headache, dizziness and other menstrual syndrome, you can do hair, basically will not harm the body. But in the process of doing hair must pay attention to the best not to contact with toxic and harmful substances, so as not to have an impact on the body. 2, during the menstrual period, if there is dysmenorrhea, and the body resistance is relatively poor, there is a cold, cold and other conditions appear best not to do hair, many potions have stimulating factors inside, the body will have an impact. If often exposed to such substances may lead to the invasion of bacteria or viruses into the body, resulting in disease reactions. Pay more attention to protecting your body during menstruation, it is advisable for women not to pull or dye their hair often.