Which skin condition appears as tiny white spots on a baby's face?

Milia are small, cyst-like structures that appear as tiny white spots, often seen on a baby's face, particularly on the cheeks, nose, and forehead. These occur when keratin, a protein found in skin cells, becomes trapped beneath the skin’s surface. Milia are very common in newborns and typically resolve on their own without any treatment.

Neonatal acne, although it can also appear on a baby’s face, typically presents as small red bumps or pustules and is caused by maternal hormones affecting the baby's skin. Erythema toxicum neonatorum manifests as red spots with a yellow-white center but does not produce white cysts. Mongolian spots are blue-gray birthmarks commonly found on the lower back and buttocks, distinct from the tiny white spots associated with milia. Therefore, the characteristic appearance and common location of milia confirm that this is the correct answer for the condition described.