The oil on the face after using Vitamin A cream may be caused by the ingredients contained in the drug, or it may be caused by physiological factors, bad habits, incorrect skincare methods and so on, which existed at the same time during the use of the drug. 1. drug factors: due to Vitamin A cream contains white petroleum jelly, vitamin E, octadecanol, glycerin and other ingredients, the use of the dose or frequency of improper may cause the face with oil. 2. Physiological factors: after puberty, the body’s hormone levels will change, the subcutaneous oil vitality, will lead to the face of the situation of oil. 3. Bad habits: daily life work, study pressure is relatively large, will cause endocrine disorders, if often eat greasy, high fat content of food, often stay up late, irregular work and rest, etc., will cause the phenomenon of face oil. 4. Incorrect skin care methods: unscientific skin care and cleaning means in life can lead to increased sebum secretion, appearing on the face with the situation of oil. If the oil situation is more serious, it is recommended that patients go to the regular hospital in a timely manner, under the diagnosis of the doctor, according to the patient’s condition to rule out improper use of drugs and other diseases, targeted standardized treatment.