There are many reasons for recurrent acne. During puberty, such as the growth stage with high androgen secretion, high oil secretion, and Propionibacterium acnes aggravating the occurrence and development of acne, it is a simple physiological phenomenon. If there are bad habits, such as often using unclean hands to squeeze acne resulting in oily skin and informal treatment, it can cause acne to occur repeatedly. Some patients refer to prescriptions or secret remedies, which can also lead to the aggravation of acne. Inappropriate use of hormonal ointments may be effective in the early stage, but later on the skin becomes dependent on it instead of aggravating acne.