There is no evidence to support this. Incorrect attaching and positioning are the most common cause of nipple problems.
Nipples have to be toughened up.
If you don t prepare your nipples they will get sore. Many studies have shown that nipple preparation make no difference to the occurrence of nipple pain of trauma. Avoidance of soaps and air drying is all that is needed. If the baby is on correctly, the time spent there will not cause pain. As stated before, there is no magic ointment .