Hair oil more common in bad habits and seborrheic dermatitis and other reasons, there is no inhibition of hair oil the most effective way, according to the cause of the general treatment and drug treatment. 1. Bad habits caused by hair oil: commonly caused by nervousness, excessive late night, spicy, greasy food, etc., can be adjusted through the above bad habits, to avoid fatigue, late night and excessive tension and anxiety, sweets and stimulating food as little as possible, pay attention to the daily care of the hair, wash the hair and other general treatment to alleviate. 2. Seborrheic dermatitis: greasy dandruff, erythema, and itching, etc., and in severe cases, vesicles and oozing, etc., in addition to the above general treatment, but also the use of selenium sulfide lotion, ketoconazole, miconazole and other medications as prescribed by the doctor. It is recommended to go to the hospital in time to see a doctor and standardize the treatment under the guidance of the doctor.