Areolae. The areola will be the round darker-colored area of pores and skin surrounding your nipple. Areolae have glands termed Montgomery’s glands that secrete a lubricating oil. This oil guards your nipple and skin from chafing during breastfeeding. Breast tissue begins to variety from the fourth week of fetal life. https://grok.com/share/c2hhcmQtMw%3D%3D_21b4ddf4-c274-418a-a078-c9d2af4898ff