There are two main reasons why you can’t get eyebrow tattoos when you have your period: first, it’s easy to get infected, and it’s an invasive operation that uses multiple rows of micro-needles to inject biological pigments directly into the appropriate level under the skin. If the resistance is high during the normal period, bacteria and viruses may be killed by their own immunity, but at this time the immunity is low, it is possible that bacteria and viruses may spread locally or even throughout the body, affecting the health and the effect of eyebrow tattooing. Second, bleeding, bleeding tendency is more serious during menstruation, although eyebrow tattooing is a very small hole in the skin, but it will also cause local small blood vessels bleeding, coagulation mechanism is relatively poor, may cause local skin bruising or subcutaneous hematoma, bring adverse effects to the effect of eyebrow tattooing.