Key takeaways
Milia are tiny keratin cysts. Benign, persistent in adults, and not acne.
- A typical milium is 1 to 2 mm, pearly white, firm to the touch, with no central opening. That is the signature feature.
- Milia come in two types: primary (spontaneous) and secondary (after burns, lasers, peels, or heavy occlusive products).
- Milia are benign. They are not cancer, not infection, and not contagious.
- Newborn milia almost always resolve on their own. Adult milia usually do not.
- Do not squeeze them. There is no opening, so pressure only inflames the skin around the bump.
- At-home treatment is reasonable for milia in safe facial locations away from the eye margin.
You leaned into the mirror and saw them. A cluster of tiny, pearly white bumps under one eye. Maybe a few on a cheek. They are not red, they are not sore, and they sit just below the surface of the skin like grains of rice. You tried to squeeze one and it did not budge. That is the giveaway.
These are almost certainly milia. They are one of the most common benign skin findings, they show up at every age (newborns, kids, adults, and most often in midlife women), and they are not acne. This guide is the starting point for everything milia on OcuraLife: what they are, the two types, what causes them, where they show up, the look-alikes, what not to do, and the treatment options. Wherever a location or comparison deserves its own deep dive, we link you straight to it.
What is milia?
Milia are small, firm, pearly white bumps made of keratin trapped just under the surface of the skin; a single bump is called a milium. Keratin is the same protein that builds hair and nails. Normally it sheds with old skin cells. In milia, a tiny pocket of it gets sealed under a thin layer of skin instead, and a small, firm bump is the visible result.
A typical milium is 1 to 2 millimeters across, pearly white or pale yellow, and sits very close to the surface. There is no opening you can extract from like a whitehead, and no central dimple like sebaceous hyperplasia. Milia are smooth and domed, and they tend to cluster in patches rather than scatter.
According to the American Academy of Dermatology, milia are one of the most frequently asked-about skin findings in both pediatric and adult dermatology because they are common, visible, and harmless. The condition is documented on Wikipedia and listed in clinical references on NIH MedlinePlus as a benign keratin cyst of the skin.
What milia looks like
Milia look like uniform grains of white sand set into otherwise normal skin. They often appear in groups of three to ten in one small area: under one eye, on the bridge of the nose, on the upper cheek. There is no redness, no inflammation, and no oily ring at the base.
They do not itch, hurt, or come and go like acne. Once a milium forms it keeps the same size and shape until something releases the trapped keratin, which takes months or years for adult milia and only weeks for newborn milia.
Is milia dangerous?
No. Milia are benign. They are not cancer, not pre-cancer, not infectious, and not a sign of an underlying disease in an otherwise healthy person. They also do not spread, either from one person to another or across your own skin.
There is no medical urgency to remove milia. The reason people treat them is cosmetic. A patch of pearly bumps under one eye is visible in the mirror and in photos, and most people who book extractions or buy at-home tools are responding to the visibility, not to a health concern. The one real safety question is whether a bump is actually milia, which the dermatologist section below covers.
What causes milia? The two types
Milia are caused by keratin getting trapped just below the skin surface instead of shedding, and dermatology splits them into two types by why that happens: primary milia form on their own, secondary milia form after the skin is injured, irritated, or treated.
Primary milia
Primary milia appear spontaneously, without any preceding skin injury or product. They are the type most newborns have, and also the type many adults develop with no clear trigger. The skin's normal exfoliation simply traps a small pocket of keratin under a layer of skin instead of releasing it.
In adults, primary milia often cluster around the eyes, on the cheeks, and on the eyelids. They tend to persist, but they are not progressive. They do not get bigger, they do not spread, and they do not turn into something else over time.
Secondary milia
Secondary milia form when an injury or treatment disrupts the normal flow of keratin to the surface, so the keratin gets trapped under the healing skin. Common triggers documented in dermatology include burns (including sunburn), laser treatments, microdermabrasion, microneedling, chemical peels, long-term use of heavy occlusive moisturizers or thick eye creams, long-term use of steroid creams on the face, and trauma to the skin (scrapes, blistering, healing wounds).
They usually appear in the treated or injured area a few weeks to a few months after the event, and they are less likely to clear on their own because the disruption to the skin's keratin pathway can persist. For the post-procedure connection in detail, see our milia after skin trauma guide.
Did you cause this?
For primary milia, no. The skin simply produced it, the way some people develop sebaceous hyperplasia and some do not. For secondary milia, a product or procedure sometimes contributed, but that is information, not blame. Heavy, occlusive eye creams used nightly are a documented contributor under the eyes. Switching to a lighter formulation may slow new ones, but it does not remove the ones already there. If a cluster seemed to appear out of nowhere after a stretch of stable skin, see our milia sudden onset guide.
Newborn milia vs adult milia
Newborn milia clear on their own within weeks; adult milia often stay for months or years. They are technically the same condition, but they behave very differently.
Newborn milia
Roughly half of all newborns develop milia, typically on the nose, cheeks, and chin in the first few weeks of life. These are primary milia, entirely harmless, and they almost always resolve within the first few weeks to first few months with no creams, no extractions, and no intervention. The pediatric guidance from major dermatology organizations is to leave them alone.
Adult milia
Primary milia in adults can persist for months or years, and secondary milia can persist indefinitely while the trigger is still present. The "they will go away on their own" framing that fits newborns does not reliably fit adults, which is why adults who want them gone usually need to do something to remove them. For resolution timelines in full, see our do milia go away on their own guide.
Where milia shows up on the face
Milia show up most often around the eyes, then on the cheeks, forehead, and nose, and each location has its own causes and its own safe treatment rules. The under-eye area leads because the skin there is thin, it gets daily contact with eye creams and concealer, and it exfoliates more slowly than the rest of the face. Pick your spot below for the full guide to that location.
Milia by location
- Milia under the eyes: the most common spot, especially in adult women, usually in small, tight clusters that show in photos.
- Milia on the eyelids: thin, mobile skin where heavy eye products are a frequent trigger.
- Milia on the lash line: bumps right at the base of the lashes, on the eye margin itself.
- Milia on the waterline: bumps on the inner rim of the eyelid, inside the lashes.
- Milia on the nose: less common than the eye area, and often mistaken for whiteheads.
- Milia on the cheeks and forehead: often slightly larger and more spread out, sometimes in a band along the hairline where hair products or occlusive sunscreens sit on the skin.
The first four locations share one rule: anything on the eyelid, the lash line, the waterline, or within a few millimeters of the eye margin is a job for a dermatologist, not a home tool. For every location side by side with its most likely cause, see milia locations and causes, and for the right removal method at each spot, see best at-home milia removal by location.
Milia vs whiteheads, sebaceous hyperplasia, and other look-alikes
Milia are the pearly white bumps with no opening that never change size; most look-alikes either come and go, have a dimple, or are skin-colored. Telling them apart matters because each one has a different cause and a different treatment path.
Milia vs whiteheads
Whiteheads are acne. The white tip is pus at the surface, not keratin under it. Whiteheads come and go within days to weeks and often have a slightly red ring at the base. Milia are firmer, sit deeper, have no surrounding redness, and stay the same size for months. If the bump responded to acne products (benzoyl peroxide, salicylic acid) within a couple of weeks, it was acne. If it has sat there for three months looking exactly the same, it is milia. For a quick one-on-one check, see milia vs a whitehead, and if your bumps are skin-colored rather than white, see closed comedones vs milia vs sebaceous filaments.
Milia vs sebaceous hyperplasia
Sebaceous hyperplasia is an enlarged oil gland. The bumps are 2 to 4 millimeters, yellowish (not pearly white), softer, and have a tiny central dimple where the gland's duct opens. Milia are smaller (1 to 2 millimeters), whiter, firmer, and have no central dimple. Sebaceous hyperplasia is much more common after age 40 and clusters on the forehead and nose. Milia appear at any age and cluster around the eyes. For the deeper picture on sebaceous hyperplasia, see our sebaceous hyperplasia complete guide. For the full side-by-side with whiteheads added in, see milia vs whiteheads vs sebaceous hyperplasia.
Milia vs syringoma
Syringomas are benign growths of sweat ducts. They are firm, skin-colored or slightly yellow, and cluster around the eyes where milia also appear. The difference is color: syringomas are skin-toned, milia are pearly white. Syringomas are often mistaken for stubborn milia that will not go away, and the reason they will not go away is that they are not milia. See xanthelasma vs milia vs syringoma for the under-eye version of this comparison.
Milia vs keratosis pilaris
Keratosis pilaris is the sandpaper-textured bumps on the backs of the arms, thighs, and sometimes cheeks. The bumps are tiny, often slightly red, and cover larger areas in a textured pattern. Milia are smooth, pearly, and clustered in a small area. A whole textured upper arm or cheek is keratosis pilaris, not milia.
Other bumps near the eye
Two more look-alikes come up around the eyes. A stye is red, tender, and swollen, while milia are painless and white; see stye vs milia. Flat yellow patches on the eyelids are more likely xanthelasma; see xanthelasma vs cholesterol spots vs milia under the eyes.
What not to do with milia
Do not squeeze, pick, or dig at milia. There is no opening for the keratin to come out of, so pressure does almost nothing to the bump and a lot to the skin around it.
"Milia stay the same size for months and never have an opening for the keratin to come out of. Squeezing is the single most common reason a small bump becomes a lingering mark. The keratin needs an exit, not pressure."
Picking or scratching can inflame the surrounding skin and leave a small mark without releasing the keratin. Poking at home with a needle or lancet recreates a clinical extraction without the sterile tools or the trained hand, which is why we cover the risks separately in should you remove milia with a needle. Apple cider vinegar, tea tree oil, toothpaste, and other folk remedies are not effective for milia and can irritate the surrounding skin, particularly under the eyes. Heavy exfoliating acids in over-the-counter strength may help mildly with prevention, but they will not remove milia that have already formed.
How to get rid of milia: treatment options
Every milia treatment that works gives the trapped keratin a way out, either in a dermatologist's office or, for spots safely away from the eye, at home with a plasma pen. There is a clinical path and an at-home path, and both work for the right person.
Clinical treatment
Manual extraction is the most common clinical option: a sterile lancet creates a tiny opening in the skin over the milium, and the keratin core is expressed with gentle pressure. It is fast, it works, and clinical extraction is the gold standard for under-eye milia because of the proximity to the eye and the precision a dermatologist's tools allow.
Cryotherapy applies liquid nitrogen to each bump. Effective, but can leave temporary marks on darker skin tones. Topical retinoids (prescription tretinoin or adapalene) applied over weeks to months can help shrink milia by speeding the skin's exfoliation cycle, but work gradually and are more useful for prevention than rapid removal. Curettage uses a small surgical scoop and is reserved for larger or stubborn cases.
Cost per bump adds up, especially when milia cluster, which is why people with one or two bumps often go in-clinic, and people with a scattered handful look at home. For what each option typically costs, see our milia removal cost breakdown.
At-home treatment
For milia in safe facial locations (cheeks, forehead, sides of the nose, areas comfortably away from the eye), at-home treatment is a viable option. The mechanism that works at home is the same principle a clinic uses: directing focused energy precisely to the bump so the trapped keratin is released and the skin renews on its own.
The OcuraLife 6-in-1 Milia Removal Pen is the at-home plasma pen built for this exact category of bump. It delivers plasma energy at low power, precisely to the milium, so the trapped keratin pocket is opened from the surface and the skin underneath is left to heal cleanly. It runs at 9 power settings, so you can match intensity to the location (a cheek milium tolerates a higher setting than a milium close to the eye, where you should stay at the lowest power and well away from the eye margin itself). For the full method walkthrough, see our milia removal at home guide; for whether the method holds up, see does a plasma pen work on milia; and for the broader buyer-side comparison of methods see plasma pen vs extraction vs retinol for milia and the bridge guide best at-home milia removal.
What to expect from at-home plasma pen treatment
A single milium takes about 5 minutes from start to finish, including aftercare prep. A tiny protective scab forms over the treated spot. Over roughly the next 3 to 7 days, the scab does its job and lifts off on its own. By Week 2 to Week 3, the skin in that area has typically renewed and looks clear.
Aftercare matters and is simple: keep the area clean and dry, do not pick the scab, and protect the spot from the sun with SPF while it heals. Picking is the single most reliable way to leave a mark, so leave it alone. For under-eye work especially, stay well below the lower lash line and inside a comfort margin from the eye itself; how to safely treat milia near the eye covers that margin in detail.
At-home milia removal
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When to see a dermatologist
See a dermatologist before you treat anything on or near the eye margin, anything that is changing, and anything you are not sure is milia.
The only situation that warrants a dermatologist visit is uncertainty. If you cannot tell whether a bump is milia or something else (a small wart, an early basal cell carcinoma in a sun-exposed area, an inflamed cyst, a sebaceous hyperplasia bump that looks similar in the mirror), book the visit. The check is fast and removes all the guesswork.
Signs to get a bump checked first
A quick check before you start
Nearly all of these spots are harmless, and a few seconds is all it takes to be sure yours is the routine kind. Treat it at home if it is stable and unchanged. It is worth a quick word with a professional first if:
- The bump is on the eyelid, the lash line, or within a few millimeters of the eye margin.
- The bump is bleeding or has bled without being touched.
- The bump is growing, or has changed color.
- The bump has a pearly translucent border or visible tiny blood vessels on its surface.
- The bump has a central crust or scab that came on its own.
- The bump is part of a cluster that appeared after a recent skin procedure (laser, peel, microneedling) and you want a professional plan rather than spot treatment.
- It is a mole or any pigmented or changing lesion of any kind.
- The bump does not look like your other bumps, or you are not sure what it is.
There is no downside to having a dermatologist confirm what something is. The at-home option is for the milia you already know. Anything ambiguous deserves a professional eye first. Resources at Mayo Clinic and the American Academy of Dermatology are useful starting points for understanding when a benign-looking bump might not be benign.
FAQ
Frequently asked questions
The most common questions readers ask about milia, with direct answers.
↓ Tap each question to reveal the answer.
The bottom line
Milia are tiny keratin cysts trapped just below the surface of the skin: common, harmless, and not acne. They show up at every age, cluster around the eyes and on the cheeks, and will not turn into anything harmful. Keep two rules in your head: do not squeeze them, and if any single bump does not look like the others, get a dermatologist to look before treating it.
If you are confident your bumps are milia and you want them gone, the OcuraLife 6-in-1 Milia Removal Pen was built for at-home treatment of this exact category of bump, and the milia removal at home guide walks through doing it correctly. For other look-alike bumps, browse the full skin conditions library.
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See the productThe OcuraLife Plasma Pen is a cosmetic device for benign, surface-level spots and is not a substitute for medical advice or diagnosis. If a spot is changing or you are unsure, check with a qualified professional.
