If you are prone to mastitis, the general concession seems to be that nipples should always be kept wet. At least this is what I was told at the hospital. If they are slightly wounded and you let the milk dry up, you create a trap for bacteria.
1. Use special compresses for the nipples.
There are different brands depending on where you live. Best is to ask your pharmacist for special compresses for wounded nipples. These compresses are wet and they keep bacteria away from the nipple, as well as constantly providing moisture. As these can be quite costly, especially if you have to use them during your entire pumping experience, it’s ok to change them once they dry up that way you don’t have to go through two packs every day.
2. clean your nipples with boiled salted water after each session
3. Use a special nipple cream (Lansilot) after each session