Colorado Esthetician Written Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Milia are small hard white bumps that commonly appear on the skin, particularly around the eyes and on the cheeks. They occur when keratin, a protein found in the skin, becomes trapped beneath the skin's surface, forming tiny cysts. This entrapment does not occur through open pores and is not directly related to hair follicles, making it clear that the formation of milia is distinct from the description provided in the first option.

The correct understanding of milia aligns with the definition that they are small, hard white bumps formed by sebum or keratin without the involvement of open pores. This formation occurs especially in individuals who may have oily skin or who have used heavy creams that can contribute to the buildup of skin cells and oils. Recognizing milia for what they are helps estheticians provide appropriate treatments, such as gentle extraction or recommending products that can help prevent their formation.