Although the benefit of using hard plastic breast shells is not conclusive, some mothers find it helps to wear them in the bra between feedings.
Breast shells exert a small amount of traction to help draw the nipple outward.
Using a breast pump to draw the nipple out just prior to breastfeeding may also help. If nipples invert, or dent inward, with stimulation, try the interventions mentioned for flat nipples. Nipple eversion devices are available. Occasionally, a mother has one or more severely inverted nipples. If one breast is less affected, your baby can breastfeed on only one breast.