The nipple is the opening of the breast ducts, the breast often has secretions through the breast ducts discharge, secretions accumulate in the nipple, cleaning is not timely can be manifested as dirty things, if the nipple is not red, swollen, painful symptoms, often wash with warm water, the problem is not big. The skin cells of the nipples will apoptosis with metabolism, forming the skin’s stratum corneum, which can also appear dirty when the stratum corneum is shed, and this is not a big problem. If the nipples are dirty and accompanied by pain and discomfort, consider the inflammation of the nipples, you need to go to the hospital in time to take oral antibiotic medication, and usually do a good job of nipple cleanliness.