A milia is a small white papule or lesion approximately 1-2 mm in size usually found in hair follicles of the brow and nose.
They can sometimes appear in infants but tend to disappear very quickly in those cases. They can also appear in adolescents and may precede acne.
Once treated, milia do not reappear in the same location. It is possible, however, that they will develop in other areas. While there are no preventative measures, treating milia is an uncomplicated process.