The possible causes of oily face are seborrheic dermatitis, acne, bad habits, etc. After clarifying the causes, you can help to improve the condition through medication and lifestyle modification. 1. Seborrheic dermatitis: Seborrheic dermatitis often leads to a lot of oil on the face of the patient, facial greasy dandruff, facial erythema, enlarged pores, varying degrees of itching and other symptoms, and some patients can also be combined with scalp damage. Such patients can apply topical sulfur ointment, salicylic acid cream, tacrolimus ointment, dexamethasone ointment and other ointments to help relieve skin inflammation, which in turn reduces oil. 2. Acne: Chronic inflammation of the sebaceous gland units of the hair follicles may lead to the occurrence of acne, which in turn causes increased oiliness on the face of the patient, facial pimples, inflammatory pimples and other symptoms. These patients can apply topical retinoic acid cream to help improve the symptoms, and severe cases also need to take isotretinoin and other medications at the same time. 3. Unhealthy habits: Frequent intake of greasy or high-sugar foods, lack of sleep, improper facial cleansing and other undesirable factors may stimulate the sebaceous glands of the face to increase secretion, resulting in increased oil on the face. This kind of patients can help to improve the facial oil through a light diet, quit smoking and drinking, eat more vegetables and fruits, regular work and rest, ensure adequate sleep, good facial cleaning and care. Patients with oily faces are advised to consult a doctor in a timely manner to determine the cause of the problem and then under the guidance of a physician to avoid adverse reactions.