After passing through puberty. Acne should disappear. But in fact, nearly 30% of people still suffer from acne after puberty, they are most likely caused by the following reasons: 1, endocrine endocrine imbalance has been an important culprit to trigger acne. If the pimples continue to occur on the jaw and temples. The actual fact is that you should look at Chinese medicine or western medicine to regulate the endocrine. It is important to treat the root cause. 2, digestive system digestive system problems. Such as: constipation, habitual diarrhea, excessive stomach acid, ulcers, etc.. It will lead to the accumulation of toxins in the body, waste can not be discharged properly, then the reflex part of the digestive system – around the mouth; both sides of the line, will also appear acne. 3, tension and stress just moved to a new home. The pressure of going abroad, getting a new job, getting married, having children, taking exams and so on can also cause imbalance in physiological functions. 4, lifestyle diet habits. The quality of sleep, long-term fatigue, excessive smoking and alcohol are also chronic causes of acne and recurrence, the destructive force should not be ignored. 5, the climate seasonal change. The sebaceous gland secretion of the conduction code when the temperature suddenly rises, a momentary failure to regulate, will also cause short-haired acne, if handled properly, will disappear after a few days. 6, drug stimulation certain drugs. 7, bad habits do not pay attention to hair, collar hygiene. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things.