Milia are small cysts that form on the skin. They are also known as "milk cysts." Milia form when a protein called keratin gets trapped under the skin. The tiny bumps look like whiteheads, but they are not acne. Unlike acne, they don't develop in a pore and are not red or inflamed.

This article discusses the causes and diagnosis of milia. It also covers treatment and offers tips for prevention.

Symptoms of Milia

Milia are hard, raised cysts that form under the outer layer of skin. They are white to yellowish in color. They can look like a grain of sand or a hard, milky capsule.

Milia are usually small, around 1 to 2 millimeters in diameter. Some can grow larger. Milia won't pop and can take a long time to go away.

Milia can show up anywhere, but they are most common on the face. They may appear around the eyes and cheeks, nose, and forehead. Milia don't hurt or itch. They are annoying but harmless.

Milia usually last longer than pimples. Pimples heal within a few days, but milia can last for weeks or months.