Milia: firm keratin cysts under the surface, and why squeezing achieves nothing
Milia are tiny, firm, pearly-white bumps formed by keratin trapped in a small pocket beneath the skin surface, most often around the eyes and cheeks. Unlike a whitehead they have no opening, which is precisely why squeezing does not work and only risks bruising or scarring. They are harmless. Removal, when wanted, is a minor procedure done by a clinician — and some bumps that look like milia are something else entirely, which is a further reason to have them looked at.
What they actually are
A milium is a very small cyst holding keratin, sitting just under the surface with no follicular opening to the outside. In newborns they are extremely common and clear by themselves. In adults they may appear spontaneously, or in skin that has been injured, burnt, blistered or heavily occluded. They feel firm and grainy rather than soft, look white or pale yellow, and do not become inflamed. 좁쌀 (jopssal), meaning millet grain, is the everyday Korean word for bumps of this sort, though it covers several different things.
Why they resist everything you throw at them
There is no channel to the surface, so there is nothing to extract, dissolve or draw out. Pore strips, squeezing, needling with a sewing pin and suction devices do not empty them; they bruise the surrounding skin and can leave a mark far more visible than the original bump. Steaming does nothing. The honest position is that most topical approaches work slowly, indirectly and unreliably, and a clinician with a sterile lance resolves in seconds what a serum may not resolve at all.
What might help the look, slowly
Gentle chemical exfoliation and retinoid-type ingredients are commonly suggested on the theory that encouraging surface turnover may help some superficial milia work their way out over weeks. Evidence for this is modest and largely experiential, so treat it as worth trying rather than reliable. Lightening a very rich eye cream is reasonable if milia appeared alongside one. Stay gentle around the eye area, apply sunscreen, and set expectations low. Do not escalate to aggressive acids on delicate skin to chase a harmless bump.
When to have someone look
Ask a clinician if bumps are numerous, persistent, growing, appearing in unusual patterns, or clustered on the eyelids — several other harmless growths and a few less harmless ones can resemble milia, and telling them apart is a visual skill, not a guess. Extraction involves a sterile blade or needle and is quick in trained hands; doing it yourself risks infection and scarring on some of the thinnest skin you have. If a bump changes colour, bleeds or enlarges, that is a prompt appointment.
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✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed: 2026-08-23.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.