Polymyxin B ointment is a broad-spectrum antibiotic, commonly used clinically for skin trauma, infection, burns, and eczema of the skin with infection, etc. The following teaches you how to use polymyxin B ointment correctly. Action demonstration: case one, skin trauma or infection: when there is skin trauma or skin infection, you can apply polymyxin B ointment to the affected area, squeeze the ointment to the cotton swab and then apply it directly to the affected area to cover the wound completely; case two, skin eczema with infection: for skin eczema with infection in this case, you can mix polymyxin B ointment with corticosteroid in the ratio of 1:1 and then apply it to the skin affected area. Special tips: 1. If symptoms persist without relief, seek medical attention; 2. Avoid using polymyxin B ointment on large burned surfaces, granulation tissue or huge wounds with epidermal detachment; 3. If skin allergic reactions occur during use, such as itching, burning sensation or redness, wipe off the drug as soon as possible.