The face is always greasy may be related to bad habits, seborrheic dermatitis and other factors, usually can be taken to change dietary habits, medication and other methods of treatment. 1. Bad habits: If patients often eat high sugar, high fat, greasy, spicy food or eat too little vegetables and fruits or often stay up late, do not pay attention to clean, etc., will lead to sebaceous glands function exuberantly, the face is always greasy situation. For this situation, patients can usually change the diet, diet mainly choose light, easy to absorb food, try to avoid high sugar, high fat food, eat more fresh fruits and vegetables, avoid staying up late, pay attention to skin cleaning. 2. Seborrheic dermatitis: due to late night, alcoholism and other factors, may lead to sebum secretion, thus inducing seborrheic dermatitis, appearing face greasy, red spots with itching. For this situation, patients can usually take oral doxycycline, vitamin B6, etc., these drugs can effectively inhibit sebum secretion, so as to improve the symptoms, if necessary, the use of antihistamines such as loratadine and other drugs. The face is always greasy may also have other reasons, it is recommended that patients go to the hospital in a timely manner to find out the cause of the disease, follow the doctor’s instructions for standardized treatment, so as not to delay the condition.