If it is relatively mild folliculitis, the owner can use alkaline solutions at home to clean them, such as green tea, soapy water, etc., or even alcohol. However, it is best to wipe and rub repeatedly during the cleaning process, otherwise it will not work. For complete removal, alcohol is better because it also has a certain sterilization and disinfection effect. If it is more serious and the black spots have been damaged, it is best to use professional anti-inflammatory agents for cleaning, and then apply anti-inflammatory ointment, such as erythromycin ointment.