Closed pimples have the potential to heal on their own if the symptoms are mild, but in most cases they need to be given active treatment. Closed pimples are caused by endocrine disorders, a preference for spicy and fatty foods, irregular sleep, and inadequate skin makeup removal. A large amount of sebum is secreted from the pores, and if it is not treated accordingly, a subcutaneous buildup can form. Some people with larger pores will form open pimples; others with smaller pores and more delicate skin will form closed pimples. If there is less closed pimples, there is a possibility of self-healing by improving the diet, eating more fresh fruits and vegetables, and cleaning the skin properly, but this is not common in clinical practice. When a patient develops closed acne, he or she should visit a hospital dermatologist and cooperate with the doctor for active treatment. During the use of medication, it is important to regulate the use of medication under the guidance of a doctor to avoid overuse of medication, which can cause skin irritation and adverse reactions such as redness and tingling.