Chin acne that does not subside may be due to the persistence of triggers that cause acne to occur or the lack of effective treatment. Most acne on the chin is formed due to endocrine dysfunction or decreased immunity, staying up late, lack of sleep, excessive fatigue, and other triggers, which may cause acne to persist if these triggers are not eliminated. Some people are not treated scientifically or do not undergo effective treatment, which can also cause these acne to not subside. For example, some people just use face masks or so-called acne products, which are actually not able to effectively treat acne. This is because acne treatment requires the professional judgment of a doctor before professional medication can be administered.