Acne caused by hormonal changes during puberty will partly eliminate by itself. If there are endocrine diseases or serious bacterial infections, etc., it cannot be eliminated by itself and needs to be analyzed according to the specific situation of the acne. Hormone secretion is more vigorous during puberty or menstruation, and the acne that appears at this time is lighter, and can usually be eliminated by itself when the hormone level returns to normal. If endocrine diseases occur in adulthood, hormone secretion is seriously disrupted, the acne itself is more serious, or because of the sebaceous gland secretion, serious bacterial infections caused by acne, generally will not be eliminated by themselves. When you have acne, you should pay attention to a light diet, get enough sleep, and do not touch or squeeze with your hands to avoid causing infection. If the acne can not be eliminated for a long time, it is recommended to go to the dermatology department, under the guidance of the doctor for standardized diagnosis and treatment.