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Milia or whiteheads: which are these small white bumps?
Milia are hard, sealed keratin cysts with no opening; whiteheads are soft plugged pores that change within weeks. Press gently beside the bump: a milium feels like a grain of sand and does not empty, a whitehead gives. If a white bump has not changed at all in three to four weeks, it is a milium, and no acne product will clear it.
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VerdictHard and fixed
Verdict
Hard and fixedMilia are hard, fixed and do not change; whiteheads do
Test your skin: Acne type quiz →What milia look like
Milia are small, firm, dome-shaped bumps, usually one to two millimeters, white to pearly in color and sitting just beneath the surface of the skin. They are most common around the eyes, on the upper cheeks, the eyelids, and the nose. Each one is a sealed pocket of trapped keratin with no visible pore or opening on top.
Because they are sealed, they behave differently from spots. Pressing one does not empty it; it feels like a tiny hard bead that moves slightly under the skin. They are not red, not tender, and not inflamed, and they can sit in exactly the same spot for months or longer without changing size, color, or number.
What whiteheads look like
A whitehead is a closed comedo: a follicle plugged with oil and dead skin cells, covered by a thin layer of skin. It is softer than a milium, sits in a pore rather than under intact skin, and often has a slightly yellowish or cream cast rather than a pearly white one. Surrounding skin may be faintly pink.
Whiteheads are part of a dynamic process. They appear, sometimes become inflamed into a red papule or pustule, and resolve over days to a few weeks. They cluster in oily areas such as the forehead, nose, chin, and jawline, usually alongside blackheads and other acne lesions rather than in isolation.
How to tell them apart
Use two tests. The first is texture: press gently beside the bump with a clean fingertip. Milia feel distinctly hard, like a grain of sand set under the skin, with no give. Whiteheads feel softer and sit shallower, and the skin over them is continuous with the pore rather than an unbroken dome.
The second is time. Photograph the area and look again in three to four weeks. Whiteheads will have changed: some gone, some newly arrived, some turned inflamed. Milia will look identical, in the same positions, unchanged. Company matters too, since whiteheads usually travel with blackheads while milia tend to appear alone around the eyes.
Why it matters
Acne treatment does not clear milia. Salicylic acid, benzoyl peroxide, and exfoliation work on plugged pores that have an opening to act through, and a sealed keratin cyst does not. Months of increasingly aggressive actives on milia deliver irritation and a compromised barrier while the bumps stay exactly where they were.
Today, stop putting acne actives on bumps that have not changed in a month, and photograph the area to compare in three weeks. If the bumps change, the acne type quiz tells you which kind of acne you are treating; if they do not, they are not acne. Milia near the eyes are a job for a clinician or trained facialist with a sterile instrument, not a needle at home. The SkinPal app holds the before and after photos so the comparison is real.
FAQ
Common questions
Can you pop milia?+
Not in the ordinary sense. There is no opening for the contents to come out of, so squeezing only bruises the skin. Removal means having the surface opened with a sterile instrument, which is a job for a professional, especially near the eyes.
Do milia go away on their own?+
Sometimes, slowly, over weeks to months. In adults they often persist. If they are not bothering you, leaving them alone is reasonable. If you want them gone, extraction by a clinician or trained facialist is the direct route.
Does salicylic acid work on milia?+
Not reliably. It works on plugged pores that are open to the surface, and a milium is sealed. Some people see gradual improvement from consistent retinoid use, but exfoliating acids alone usually do not clear them.
What causes milia in adults?+
Keratin becomes trapped rather than shed. It can follow skin damage such as burns or blistering, heavy occlusive products around the eyes, or occur for no identifiable reason. A clinician can tell you which type you have.