Milia are keratin-filled cysts that form just beneath the surface of the skin. They can occur anywhere on the body but are most commonly found around the eyes, cheeks, and forehead. Unlike acne, milia are not caused by clogged pores but are instead the result of trapped keratin, a protein that helps form skin, hair, and nails. While they are harmless and typically painless, many people seek milia treatments to remove them for aesthetic reasons.
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