Hair is very oily every other night is the scalp sebaceous glands in a short period of time, and sebaceous gland secretion is often associated with genetic, endocrine, bad habits and other factors. 1. Genetic factors: some patients due to family genetics, congenital sebaceous gland secretion developed, resulting in excessive oil secretion, and then appear hair sleep up on the situation of very oily. 2. Endocrine factors: androgens in the human body will act on the sebaceous glands, resulting in the appearance of more oil. So when the endocrine disorder, there will be a sleep hair on the situation of oil. 3. Bad habits: long-term late night, mental stress and spicy and greasy food will cause the scalp in a short period of time more oil. When the hair every other night is very oily, it is recommended to go to the hospital, under the guidance of the doctor standardized treatment.