For mild folliculitis, there is usually improvement after 5 days of topical application of Bactrim ointment. Folliculitis includes bacterial folliculitis as well as fungal folliculitis, clinical bacterial folliculitis is more common, common bacterial species include Staphylococcus aureus, Streptococcus hemolyticus, etc. The skin lesions are localized follicular papules, pustules, and in severe cases, localized redness, swelling and pain can occur. Topical Bactroban ointment, commonly known as mupirocin ointment, can be used to treat various skin infections caused by gram-positive bacteria. For mild folliculitis, topical application is usually clinically effective after 5 days. In case of severe folliculitis, the clinic recommends the use of sensitive antibiotics in conjunction with the system. Due to the presence of drug resistance, or the possibility of non-bacterial folliculitis, some folliculitis with poor results after topical application of Bactrim ointment need to be examined to identify the cause so that appropriate treatment can be given.