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What Causes Milia (And How to Actually Get Rid of Them)

What Causes Milia (And How to Actually Get Rid of Them)


You may have noticed them. Tiny, hard, white bumps. Usually around the eyes.

Sometimes on the cheeks or forehead. They look like whiteheads, except they don't behave like whiteheads. You've tried to squeeze one. Nothing happened. You squeezed harder. Still nothing.

Just a sore spot and a tiny, pearly bump that looked back at you with the quiet confidence of something that has no intention of leaving.

You exfoliated. They stayed. You switched cleansers. They stayed. You Googled "white bumps under eyes that won't go away" at 11pm and fell down a rabbit hole that somehow included toothpaste as a remedy.

Let me save you from the toothpaste.

Those bumps are called milia. They're not acne. They're not whiteheads. And the reason nothing you've tried has worked is that you've been treating them like something they're not.

Once you understand what they actually are, everything clicks.

Milia Are Not Acne (Which Is Why Acne Treatments Don't Work)

A pimple is a clogged drain. Oil, dead cells, and bacteria get stuck inside a pore. The pore has an opening. The clog has a way out, eventually. You can squeeze it (we both know you do), and something comes out.

A milium is a marble sealed inside drywall.

There's no opening. No pore. No exit route. The bump you're looking at is a tiny cyst made of keratin, the same structural protein that makes up your hair and nails, trapped just beneath the surface of your skin in a sealed pocket.

This is why squeezing does nothing. There's nowhere for the contents to go. You're pressing on a sealed container. All that happens is you bruise the tissue around it, maybe create a red mark, and the milium sits there unchanged, probably judging you.

It's also why acne products don't work. Salicylic acid clears pores. Milia aren't in your pores. Benzoyl peroxide kills bacteria. Milia don't involve bacteria. Tea tree oil... well, tea tree oil just makes the area smell like tea tree oil, which is arguably the worst outcome of all.

Milia are a fundamentally different problem. And once you stop treating them like acne, you can start understanding what they actually are and what actually helps.

Why Milia Form (And Why They're More Common After 50)

Your skin is constantly shedding dead cells. It's a process called desquamation, which is a fancy word for "your skin's housekeeping." Old cells at the surface detach, flake off, get washed away, and new cells from below take their place.

When you're young, this cycle takes about 28 days. By 50, it takes 40 to 60 days (PMC, 2021). The housekeeping staff didn't quit, but they went from a full crew to a skeleton shift. Things that used to get cleared away promptly now sit around longer.

And sometimes, they don't get cleared at all. A dead cell, or a clump of keratin, gets trapped just beneath the surface before it has a chance to shed. The skin above it heals over. The keratin hardens. And now you have a milium: a sealed pocket of protein with a roof of healthy skin sitting on top of it like a locked door with no key.

The cell turnover slowdown is the primary driver. But it's not the only one.

Heavy occlusive products can make it worse. When thick, waxy products seal the skin surface, they can block the enzymatic activity that helps dead cells detach. Think of it as the housekeeping crew showing up for work and finding that someone wrapped the entire floor in plastic wrap. The cells that need to leave can't get out. They pile up. Some get trapped. Milia form.

Cumulative sun damage contributes. Decades of UV exposure thicken and roughen the stratum corneum (the outermost layer), creating a surface that's harder for dead cells to shed from. This is why milia are more common in sun-exposed areas and why sunburn can trigger secondary milia during the healing process.

Skin trauma is a trigger. Aggressive chemical peels, laser treatments, dermabrasion, and even severe blistering can trigger milia when healing skin traps cell fragments beneath the new surface. The irony is real: the procedures you do to "improve" your skin can create the exact conditions that produce milia.

So milia are fundamentally a housekeeping problem. Your skin isn't clearing dead cells efficiently, and sometimes your products (or your procedures, or the sun) are making the problem worse.

Which leads to the question I know you're already asking...

Can Your Moisturizer Cause Milia? (Honestly, Yes. But It Depends.)

Not every moisturizer. But the mechanism is specific and worth understanding, because once you see it, you'll know exactly what to look for.

Moisturizers work in two fundamentally different ways:

Humectants pull water into the skin. Glycerin, hyaluronic acid, polyglutamic acid, urea. These attract moisture from the environment and the deeper layers of your skin and hold it in the epidermis. They don't sit on the surface. They integrate.

Occlusives seal the surface. Petroleum, mineral oil, heavy waxes, thick silicones. These create a physical barrier on top of your skin that prevents water from evaporating. They're effective for preventing moisture loss, but they also prevent things from getting out, including dead cells that need to shed.

When a product is heavily occlusive (especially around the eyes, where the skin is thinnest, turnover is slowest, and there are no oil glands), it can trap keratin beneath the seal. The dead cells can't detach. The keratin builds up. Milia form.

This is the "plastic wrap" problem. The moisturizer is doing its job (sealing moisture in), but in doing so, it's also preventing normal housekeeping (dead cells getting out).

The products most associated with milia formation: petroleum-based balms, heavy eye creams with mineral oil or thick wax bases, thick dimethicone layers, and sleeping masks that sit as an impermeable film overnight.

The products least associated with milia formation: humectant-forward formulas that support hydration by pulling water in rather than sealing the surface. Ceramide-based moisturizers with glycerin, hyaluronic acid, and polyglutamic acid hydrate the barrier without creating the plastic wrap effect. They're designed to support the skin's structure, not smother it.

An honest note about our own products: our Face Lotion is humectant-forward with barrier-supporting ceramides. It also contains urea, a gentle keratolytic that actually helps dead cells detach rather than trapping them. That's the opposite of a milia-causing formulation.

You might wonder about our Super Cream, since it contains lanolin and shea butter. Fair question. But there's an important distinction between an emollient and an impermeable occlusive. Petroleum, mineral oil, and heavy synthetic waxes create a solid, non-breathable film over the skin surface. Nothing gets in. Nothing gets out. That's the plastic wrap effect that traps keratin.

Lanolin and shea butter don't work that way. Lanolin is structurally similar to the lipids in your own skin. It holds twice its weight in water and absorbs into the barrier rather than sitting on top of it. Shea butter provides fatty acids that integrate into the stratum corneum. These ingredients support the skin's function rather than sealing it shut.

The milia risk comes from products that create an impermeable barrier, particularly around the eyes where the skin is thinnest and turnover is slowest. That means petroleum-based balms, mineral oil eye creams, thick silicone sleeping masks, and heavy wax-based formulas. If it feels like a layer sitting on top of your skin rather than absorbing into it, that's the texture to be cautious about.

The question isn't whether you should moisturize. Of course you should. The question is whether your moisturizer is supporting your skin's natural shedding process or quietly sabotaging it.

Everything That Won't Get Rid of Milia (A Mercifully Short List)

Let me save you some time, money, and frustration.

Squeezing. There is no opening. You are pressing on a sealed cyst. Nothing will come out. You will, however, create inflammation, bruising, and potentially a scar that outlasts the milium by years. Please stop.

Physical scrubs. The cyst is beneath a layer of healthy, intact skin. You cannot scrub through your own face to reach it. An apricot scrub doesn't know where the milium is, and even if it did, it can't get there.

Acne treatments. Salicylic acid, benzoyl peroxide, sulfur masks. All designed for pore-based conditions involving oil and bacteria. Milia involve neither. These products will dry out and irritate the surrounding skin while the milium watches, unmoved.

Pore strips. Milia are not in your pores. Pore strips pull from the surface. Milia are beneath the surface. This is like using a lint roller to remove a marble from under a carpet.

"Natural" remedies. Apple cider vinegar. Lemon juice. Toothpaste. Honey masks. Castor oil. I have read all of these recommendations on the internet and I want you to know that the internet is a place where people also recommend drinking turpentine for health benefits. Do not put toothpaste on your face. It contains abrasives designed for tooth enamel. Your under-eye area is not tooth enamel.

If it makes you feel better, the reason all of these fail is the same reason: the cyst is sealed. Nothing you apply to the surface can penetrate a sealed pocket of keratin and dissolve it from the outside. The physics simply don't allow it.

Which brings us to what actually works.

What Actually Works: Removal vs. Prevention

This is a two-track answer, and understanding the distinction saves you from months of wasted effort.

Track 1: Removing milia that are already there.

Here's the honest truth: existing milia usually need professional extraction.

A dermatologist or licensed esthetician uses a sterile lancet (a very small, sharp blade) to make a tiny nick in the surface skin, then gently lifts the keratin plug out. It takes seconds per milium. It's not painful (the skin is thin and the cyst is tiny). It heals quickly. And the milium is gone.

This is not DIY territory. The under-eye area is too delicate, the risk of scarring and infection too real, and the cysts too inaccessible for home extraction. A YouTube tutorial and a safety pin are not a substitute for a trained professional in a sterile environment. I know you were thinking about it. Don't.

Some milia do resolve on their own over time, especially with the prevention measures below. If yours have been there for only a few weeks, give it some time. If they've been there for months without budging, extraction is the answer. It's fast, it's affordable, and it's definitive.

No topical product, no matter how well formulated, can dissolve a sealed keratin cyst from the outside. That's the honest ceiling. If someone tells you their cream "removes milia," they're either confused about what milia are or they're lying. Neither is a good sign.

Track 2: Preventing new milia from forming.

This is where skincare makes a genuine difference. And it's the part worth investing in, because once your existing milia are extracted, prevention determines whether they come back.

Support your skin's natural shedding process. A gentle chemical exfoliant, once or twice a week, helps dead cells detach before they get trapped. Lactic acid is ideal for mature or sensitive skin: it's effective at low concentrations without the irritation of glycolic acid. Think of it as helping the housekeeping crew, not replacing them.

Switch from heavy occlusives to humectant-forward moisturizers. Especially around the eyes. If your current eye cream or moisturizer feels thick, waxy, or like it's sitting on the surface rather than absorbing, it may be contributing to the trapping problem. Products built on glycerin, hyaluronic acid, ceramides, and polyglutamic acid hydrate without sealing. That's the distinction that matters.

Cleanse properly. Sleeping in makeup, sunscreen, or layered products gives dead cells and keratin more material to get trapped under. A gentle, pH-balanced cleanser removes the daily accumulation without stripping the barrier. Clean surface, healthy shedding.

Wear SPF. UV damage thickens the stratum corneum over time, which makes trapping easier. Daily sunscreen prevents the cumulative roughening that contributes to milia formation. This is a long-term prevention play, not an immediate fix.

Be cautious with retinoids. Retinol accelerates cell turnover, which theoretically helps prevent milia. And on healthy, well-supported skin, it can. But on depleted, barrier-compromised skin, retinol can cause the irritation and peeling that actually triggers secondary milia. If your barrier is struggling (stinging, redness, reactivity), fix the barrier before introducing retinol. We've written extensively about why this order matters.

Where Milia Show Up (And Why Certain Spots Are Worse)

Not all areas of your face are equally milia-prone. Understanding why helps you target prevention where it matters most.

Under the eyes. The number one location. The skin here is the thinnest on your entire body, has no oil glands, and has the slowest cell turnover. It's also the area most commonly overloaded with heavy eye creams. Everything about this zone makes it the perfect environment for trapping keratin. If you're switching one product to prevent milia, switch your eye cream first.

Cheeks and forehead. Usually connected to product occlusion or general turnover slowdown. These areas respond well to gentle weekly exfoliation and product adjustment.

Around the nose. Can be confused with sebaceous filaments (those tiny dots that look like blackheads but aren't). If the bumps are hard, pearly white, and don't express anything when pressed, they're milia. Sebaceous filaments are softer, slightly grey or yellow, and refill quickly even when extracted.

Eyelids. Common and spectacularly annoying. Also the area where you absolutely should not attempt self-extraction. One wrong move with a sharp object near your eye is a risk that no milium is worth taking. Dermatologist. Please.

Milia Are Frustrating, Not Permanent

Milia aren't dangerous. They're not a sign of disease. They're not going to spread, worsen, or turn into something else. They're just tiny sealed pockets of keratin that your skin didn't manage to clear on schedule.

The ones you have now can be professionally removed in minutes. The ones you don't have yet can be prevented by supporting your skin's natural shedding process and choosing moisturizers that hydrate without trapping.

Your skin isn't broken. Its housekeeping just slowed down. Give it the right conditions, and the crew gets back to work.




Frequently Asked Questions

What causes milia in adults? Milia form when keratin (a structural protein from dead skin cells) gets trapped just beneath the skin surface instead of shedding normally. In adults, the primary cause is the age-related slowdown in cell turnover: the shedding cycle stretches from about 28 days to 40-60 days after 50, giving dead cells more time to get trapped. Heavy occlusive products, sun damage, and skin trauma can also contribute.

Can you pop milia? No. Milia are sealed cysts with no pore opening to the surface. Squeezing doesn't express anything because there's no exit route. It just damages the surrounding skin and can cause inflammation or scarring. Professional extraction with a sterile lancet is the safe, effective approach.

Do milia go away on their own? Sometimes. Some milia resolve without treatment over weeks or months, especially with gentle exfoliation and proper skincare. However, many adult milia are persistent and require professional extraction. If a milium has been unchanged for several months, it's unlikely to resolve on its own.

Can moisturizer cause milia? Heavy occlusive moisturizers (petroleum-based, thick wax formulas, mineral oil) can contribute to milia by sealing the skin surface and trapping dead cells that need to shed. Humectant-forward moisturizers (glycerin, hyaluronic acid, ceramides) hydrate without creating this trapping effect. The mechanism matters more than the richness of the product.

How does a dermatologist remove milia? A dermatologist or licensed esthetician makes a tiny incision in the surface skin with a sterile lancet, then lifts or presses out the keratin plug. It takes seconds per milium, heals quickly, and doesn't typically scar when performed professionally. It's the fastest and most reliable method for clearing existing milia.

How do I prevent milia from coming back? Gentle weekly chemical exfoliation (lactic acid is ideal for mature skin), switching from heavy occlusives to humectant-forward moisturizers around the eyes, consistent cleansing to remove daily buildup, daily SPF to prevent UV-related skin thickening, and maintaining a healthy skin barrier that supports normal cell turnover.

 

 

 

 

 

 

 


Sources

StatPearls. "Milia." National Center for Biotechnology Information, National Library of Medicine. 2023. https://pubmed.ncbi.nlm.nih.gov/32809316/

PMC. "The life in a gradient: calcium, the lncRNA SPRR2C and mir542/mir196a meet in the epidermis to regulate the aging process." Aging (Albany NY). 2021. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8386546/

Elias, P.M. "Stratum corneum defensive functions: an integrated view." Journal of Investigative Dermatology. 2005. https://pubmed.ncbi.nlm.nih.gov/16098026/

Rawlings, A.V. & Harding, C.R. "Moisturization and skin barrier function." Dermatologic Therapy. 2004. https://pubmed.ncbi.nlm.nih.gov/14728698/