As we age, our skin cells turn over slower, setting up a well moisturized skin to accumulate the old cells within the pores. When they do this, it can form a little white bump trapped within the top layer of skin, call milia. Milia usually develops around the eyes and tops of cheeks.
“Milia are very common, benign, keratin-filled cysts. Primary milia are typically seen in infants but also may occur in children and adults. Secondary milia develop after trauma to the skin, such as after burns (eg, sunburns), dermabrasion, or in blistering disorders.” emedicine