It is not recommended to tattoo eyebrows during menstruation for the following reasons: 1, because of the increased secretion of estrogen in the body during menstruation, resulting in increased sebum secretion in women, the skin becomes delicate, the subcutaneous capillaries are in a dilated state, and the skin becomes more sensitive. 2, during menstruation, eyebrow tattooing increases the risk of subcutaneous bleeding, and if there is subcutaneous bleeding, scabbing off will have a great impact on the local coloring, and the coloring will be uneven after the scabbing off. 3, the skin is more sensitive during menstruation, and allergies are likely to occur when using numbing agents and plant pigments. 4, the body’s resistance is relatively low during menstruation, so eyebrow tattooing increases the chances of skin infection. In summary, eyebrow tattooing is not recommended during menstruation to avoid affecting the effect of eyebrow tattooing and increasing the risk of eyebrow tattooing. It is recommended that women avoid special periods such as menstruation, pregnancy and breastfeeding when getting their eyebrows tattooed or having their hair dyed.