Love of oil is caused by a variety of factors, including physiological factors, poor lifestyle and pathological factors, patients need to analyze according to their accompanying symptoms combined with lifestyle to clarify the specific causes. First, physiological factors some people have a strong secretion of sebaceous glands inside the skin follicles, resulting in the formation of sebum layer on the surface of the skin, which makes the skin greasy and easy to produce oil. In addition, the high ambient temperature in summer can cause seasonal oiling. Second, bad lifestyle 1, bad dietary habits: some people drink less water, often eat spicy, fried, stimulating food and high-sugar, high-fat diet, such as barbecue, spicy hot, beer, desserts, etc., can stimulate skin oil secretion, thus triggering the body oil; 2, bad habits: smoking and drinking, long-term late night, do not pay attention to skin cleaning, mental stress and other factors, can also lead to endocrine disorders, triggering Facial and body oil. Third, pathological factors 1, skin damage: skin surface sebum layer and stratum corneum by various external stimuli, so that the skin is damaged, the normal function of the skin is damaged, can lead to oily skin, common stimuli include prolonged exposure to ultraviolet radiation, computer radiation, light exposure, sun exposure or topical irritant drugs, etc.; 2, seborrheic dermatitis: the main symptoms are manifested as a high oil secretion, resulting in skin The main symptom of seborrheic dermatitis is the high secretion of oil, which leads to a decrease in the water-locking function of the skin, and easily blocks the mouth of the hair follicle causing abnormal keratinization of the follicle, accompanied by oily skin.