You can wash your hair during menstruation, but during menstruation, due to the influence of hormones and vaginal bleeding, your body's resistance will decline. Pay attention to using hot water when washing your hair. After washing your hair, dry it with a hair dryer immediately to avoid catching a cold. During menstruation, if you wash your hair with cold water, it is easy to contract the scalp blood vessels and cause headaches. Bathing during menstruation is also possible, but basin bath and sitz bath should be prohibited to avoid infection. You also need to pay attention to your diet, eat less spicy, raw and cold food, keep warm and avoid cold water. If you have dysmenorrhea or menstrual headache, it is recommended not to wash your hair when there is a lot of blood during menstruation.