It is best not to dye your hair during your period, the dyeing agent itself has a certain effect on the human body. Women’s skin is very sensitive during the physiological period, the resistance to the outside world is weaker, the absorption rate may be three times faster than usual, the chemical composition of the hair dye is easy to enter other parts of the scalp through the blood vessels, causing allergic reactions, but also lead to menstrual disorders, perm hair to sit for a long time, may cause pelvic congestion leading to discomfort. It is recommended to dye your hair after 2-3 days of menstruation, and usually try not to perm more. During menstruation, pay attention to abdominal warmth, more rest and do not stay up late, less spicy and stimulating, cold food, eat more high-protein, high-nutrition food, eat more fresh vegetables and fruits, forbid intercourse during menstruation, pay attention to personal hygiene, avoid infection.