Acne crusts can be treated with different treatment options depending on the crust: 1. For normal crusts, you can let it fall off on its own. If the scab is thicker, you can apply zinc oxide borate ointment twice a day. The thickness of the application is about the thickness of a dollar coin. After 20 minutes, gently wipe the scab with a sterile cotton swab to bring down the scab; 2. Pus scab, mainly caused by bacterial infection, can be first wet-applied Ravnol solution twice a day, once for two minutes. After the wet compress then apply compound polymyxin B ointment or fusidic acid ointment twice a day for treatment. Oral antibiotics, such as amoxicillin capsules or roxithromycin capsules, can also be taken to remove the pus crust, antibacterial and anti-inflammatory effects.