What is the primary characteristic of milia?

Milia are primarily characterized as small, keratin-filled cysts that commonly appear on the face, particularly around the eyes and cheeks. These cysts form when keratin, a fibrous protein found in the skin, becomes trapped beneath the surface. Milia are typically tiny, white or yellowish in color and have a well-defined appearance, distinguishing them from other skin lesions or conditions.

Recognizing milia is important for estheticians, as they require different treatment approaches than other skin issues. For instance, milia may be effectively treated through gentle exfoliation or extractions, while other skin conditions might necessitate different interventions.

This understanding of milia as keratin-filled cysts helps differentiate them from other skin concerns like inflamed cysts, which are larger and may be painful, or irritated patches that present with redness and inflammation.