The first thing to consider is that oil on the head and body is caused by heredity, androgens, improper diet, temperature and other factors. 1. Genetic factors: head and body oil may be related to heredity, perhaps the body belongs to the oily skin, so head and body will be oily. 2. Androgen: Too much androgen in the body or the sebaceous glands are sensitive to androgen can also lead to oil on the head and body. 3. Improper diet: If you often consume too much fatty meat, fried chicken, cakes and other foods that are too high in sugar and greasy, it will lead to exuberant sebum secretion, which may cause the phenomenon of oil on the head and body. 4. Temperature: the skin is affected by the environment, the higher the temperature, the more exuberant sebaceous gland secretion. If you have oil on your head and body, you need to pay attention to personal hygiene, maintain good living as well as dietary habits, and we recommend that you go to a regular hospital to clarify the cause.