Bactroban, also known as mupirocin ointment, is an ointment often used in dermatology or surgery, suitable for trauma, collision, skin breakdown, etc. to treat and prevent infection, and for acne there are four mechanisms of formation: 1. infection, that is, there is Propionibacterium acnes and a small amount of staphylococcus inside the hair follicle, so Bactroban can control infection to reduce inflammation. 2. the mechanism of acne is high androgen, that is, the proportion and amount of androgens in the body increased after the aggravation and triggering of acne. 3. The reason for this is that the body’s androgen ratio and amount are higher, which can aggravate and trigger acne. 3, the hair follicles are clogged with oil secretion, which makes the environment for bacterial culture inside the hair follicles. 4, the blockage of the hair follicles, cell shedding, makes the hair follicles appear closed acne. These points are the mechanism of the occurrence of acne, and Bactrim is only for one of the infection mechanism treatment, so it can treat acne, but not comprehensive coverage of the mechanism of the occurrence of acne.