Facial oil may be physiological factors, can also be considered and seborrheic dermatitis related. 1. Physiological factors: some people have oily skin due to genetic factors, the amount of oil on the face of men and women usually increases from puberty onwards, and a diet high in sugar and fat as well as an elevated ambient temperature can also lead to an increase in the amount of oil on the skin. It can be alleviated by cleaning the skin in time, eating a light diet and lowering the ambient temperature. 2. Seborrheic dermatitis: related to Malassezia colonization, lipid increase, impaired skin barrier function, immune response and individual susceptibility. It can be treated with topical salicylic acid, calcium-modulated phosphatase inhibitors such as tacrolimus and other drugs. Facial oil, it is recommended to pay attention to personal hygiene, reasonable skin care. And timely to the hospital dermatology department to find the cause, cooperate with the doctor treatment.