Most of the acne before menstruation is due to poor skin cleansing and endocrine disorders. The change in hormone levels before menstruation may lead to acne. Hormone levels work in conjunction with the nervous system to regulate physiological functions and metabolism. So if the hormone level changes, then the body’s regulatory mechanism will also change, so there will be a situation of acne. In addition, if the skin is not cleaned properly, long-term dirt on the skin will also lead to skin breakouts. If the situation of long acne occurs for a long time, then it is recommended to consult a doctor in time to find out whether it is caused by endocrine, and treat the symptoms.