Medically reviewed by Dr Sin Yong · Last reviewed · 10 min read · Assessed personally by Dr Sin Yong · Jump to questions
A milium is a tiny keratin cyst — a pearl of compacted skin protein sealed beneath the surface with no opening. Milia look like whiteheads but behave nothing like them: they cannot be squeezed out, they do not respond to acne treatment, and they can sit unchanged for years.
WhatsApp Dr Sin Yong →Milia, whiteheads and syringoma can look alike, but a milium is a tiny keratin cyst sealed beneath the skin with no opening, so it cannot be squeezed out like a whitehead. Assessment confirms which one it is before sterile de-roofing and extraction is considered.
Also called: oil seeds, milk spots, 油脂粒, 稗粒肿

The classification literature divides milia into primary — arising spontaneously from the lower portion of the follicular structure, common at all ages including newborns — and secondary, forming where skin has healed after blistering, abrasion, burns or procedures [1]. In both cases the story is the same: keratin that should have been shed gets trapped in a tiny cyst with no exit to the surface. Heavy occlusive eye creams are a commonly reported association around the eyes, where the skin is thinnest and the bumps most visible [2].

A whitehead sits in an open follicle: soft contents, and acne treatment reaches it. A milium is sealed and rock-firm — squeezing achieves nothing but bruising, particularly dangerous on eyelid skin. A syringoma (benign sweat-duct growth) is skin-coloured rather than white and typically clusters symmetrically under both eyes; it is treated differently again. Fine distinctions, one-glance answers for a physician with a dermatoscope — and worth getting right, because the eyelid is the last place for trial-and-error [1,2].
Physician extraction: a sterile micro-opening de-roofs the cyst and the keratin pearl is expressed whole — quick and precise, with care taken to keep marking to a minimum. Multiple or recurrent milia can also be addressed with fine-tip cautery or laser assistance [2]. Secondary milia after resurfacing usually resolve or are tidied at review — a known, manageable footnote to procedures like fractional laser, covered in Dr Sin Yong's aftercare. Where milia accompany congested, rough skin, the FSX smooth-skin programme and HydraFacial manage the terrain; the milia themselves still need extraction, because no rinse dissolves sealed keratin. Under-eye milia often ride alongside dark circle concerns — one assessment covers both.
Squeezing — sealed cyst, thin skin, trauma with nothing released. Acne products — there is no active follicle to treat. Scrubs — the cyst sits below the reach of any exfoliant, and aggressive scrubbing around the eyes creates the very micro-injury that seeds secondary milia. Needle DIY from video tutorials — sterile technique and depth control are the whole procedure; on an eyelid, the margin for error is zero.
“A milium is a sealed pearl, not a blocked pore — there is no exit to squeeze it through, only skin to damage trying.”
— Dr Sin Yong
Milia are the bumps patients injure themselves over — squeezing a sealed keratin pearl on eyelid skin achieves nothing but trauma. In clinic they take seconds each with a sterile micro-opening. This is the clearest case in aesthetics of a two-minute professional fix beating a two-year home campaign.
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| Type / look-alike | How to recognise it | What it needs | What does not work |
|---|---|---|---|
| Whitehead | Soft contents in an open follicle, often with acne nearby | Acne management, such as topical retinoids | Picking, which leaves marks |
| Primary milium | Firm, pearly white dome around the eyes or cheeks | Physician extraction through a sterile micro-opening | Squeezing, acne products and scrubs |
| Secondary milium | Forms where skin healed after blistering, burns or resurfacing | Review, then extraction if it persists | Aggressive scrubbing that adds micro-injury |
| Syringoma | Skin-coloured bumps clustered symmetrically under both eyes | Assessment first; ablative laser or fine-tip cautery considered | Squeezing; it is solid tissue, not a cyst |
| Xanthelasma | Flat yellowish plaques on the eyelids, linked to lipids | Separate assessment, as it differs from milia | Treating it as a milium |
A milium has no opening, so pressure only bruises the skin and nothing is released.
That is a mix-up with xanthelasma; milia are keratin and carry no metabolic meaning.
Because there is no opening. A milium is a closed keratin cyst under intact skin — pressure has nowhere to push the contents except sideways into tissue.
Some primary milia resolve over months; many persist indefinitely. Newborn milia clear spontaneously. Adult milia that have sat for a year are usually there to stay until extracted.
Momentary and minor — the opening is a fraction of a millimetre. Most patients describe a brief pinprick per lesion.
Thin skin, occlusive eye products and cumulative micro-injury make the periocular zone the classic site. Reviewing your eye-area routine is part of prevention.
Yes — secondary milia are a recognised, temporary phenomenon after resurfacing as skin re-epithelialises. They are minor and easily dealt with at review.
No — that is a mix-up with xanthelasma, the yellowish eyelid plaques linked to lipids. Milia are keratin and carry no metabolic meaning. If the bump is yellow and flat, see the xanthelasma guide.
Medically reviewed by Dr Sin Yong, MBBS (NUS), MRCS (Edinburgh) · Last updated 7 October 2026 · Editorial policy
| Feature | Whitehead | Milium | Syringoma |
|---|---|---|---|
| Cause | A follicle blocked with sebum and skin cells; part of acne | Keratin trapped in a tiny sealed cyst; primary, or secondary after injury, blistering or resurfacing | A benign growth of sweat-duct tissue in the dermis |
| Look and feel | Soft, white or skin-coloured, often with other acne nearby | Firm, pearly white, 1–2 mm and dome-shaped | Skin-coloured to yellowish, small and flat-topped, often clustered symmetrically under both eyes |
| Typical sites | Forehead, nose, chin and cheeks | Around the eyes, on the eyelids and cheeks | Lower eyelids most often; sometimes cheeks, neck or chest |
| What helps | Acne management, such as topical retinoids and other acne treatment | Physician extraction through a sterile micro-opening; fine-tip cautery or laser for multiple lesions | Assessment first; the growth is treated with methods such as ablative laser or fine-tip cautery, and recurrence is common |
| Squeeze it? | Not advised; picking leaves marks | No: there is no opening, so pressure only bruises the skin | No: it is solid tissue, not a cyst |