You noticed a cluster of tiny white bumps under your eyes or across your cheeks, and now you are wondering if you broke out, did something wrong, or need to start scrubbing harder. Take a breath. What you are most likely seeing is milia, and they are harmless.
Milia are small, firm, white or yellowish cysts filled with trapped keratin. They are not acne, they are not contagious, and in most cases they are not a sign that anything is wrong with your health or your skincare. Here is what they actually are, why they show up, and what you can safely do about them.
What are milia, exactly?
Milia (a single one is called a milium) are benign, keratin-filled cysts that sit just beneath the surface of your skin. Each one measures roughly 1 to 2 millimeters and appears as a small, firm, white or yellowish bump, most often on the face. They form when keratin, a protein your skin naturally makes, gets trapped instead of shedding away.
Under a microscope, a milium is essentially a tiny version of an epidermoid cyst. It has a complete lining of skin cells surrounding a core of trapped keratin. That is why milia feel firm and do not pop like a whitehead. They are not infected, not inflamed, and they only affect appearance, not your health.
Milia commonly show up around the eyes, on the cheeks, nose, and eyelids, anywhere keratin can become trapped near the surface.
What causes milia?
Dermatologists divide milia into two broad groups based on what causes them. Both types look identical under the microscope, but they arise for different reasons.
Primary milia form on their own when keratin builds up in the hair follicle near an oil gland. They are most familiar as the white spots seen on newborns. Secondary milia develop after the skin has been damaged or disrupted in some way.
- Primary milia: arise spontaneously, including congenital (newborn) milia, the common type in older children and adults, milia en plaque, and eruptive milia.
- Secondary milia: develop after skin injury or disease, such as burns, blisters, rashes, or trauma, and can also follow certain medications.
- Neonatal milia: extremely common, affecting roughly 40% to 50% of U.S. newborns, most often on or around the nose.
How long do milia last?
It depends on the type. In newborns, milia are temporary and almost always clear on their own within a few weeks, no treatment needed. This is why doctors rarely do anything for neonatal milia beyond reassurance.
In older children and adults, milia can be more persistent. Some resolve over weeks to months as the skin naturally turns over, while others linger and may need a professional to remove them. If a cluster of bumps has not budged after several weeks, that is a reasonable point to have a clinician take a look.
Milia vs. whiteheads: how to tell them apart
Milia are frequently mistaken for whiteheads, but they are not the same thing, and the difference matters for how you treat them.
A whitehead is a clogged pore filled with oil and dead skin, sitting at the opening of a follicle, and it is part of acne. A milium is a fully enclosed cyst of keratin with no opening to the surface, which is exactly why squeezing does not work and only risks damaging your skin.
- Milia: small, firm, white, dome-shaped, no visible opening, not inflamed, do not respond to popping.
- Whiteheads: softer, have a clogged pore opening, part of acne, and can become red or inflamed.
- Key tell: if it will not pop and feels like a tiny hard pearl under the skin, it is most likely a milium.
How are milia treated and removed?
For newborns and many mild cases, the best treatment is no treatment, because the bumps clear on their own. For persistent milia in older children and adults, a dermatologist or trained clinician has several safe options.
The most important rule: do not try to dig out, squeeze, or pop milia at home. Because they are enclosed cysts, squeezing rarely removes them and can cause inflammation, infection, or scarring, especially in the delicate skin around the eyes.
- In-office extraction with a sterile needle or comedone extractor.
- Topical retinoids such as tretinoin to encourage skin turnover.
- Electrodesiccation, curettage, or ablative laser for stubborn cases.
- Professional evaluation for any bumps near the eye rather than at-home removal.
When should you see a doctor?
Milia themselves are harmless, so most do not require medical care. That said, it is worth seeing a clinician in a few specific situations: when bumps near your eyes bother you and you want them safely removed, when milia persist beyond several weeks and are not clearing, or when you are simply not sure whether the bumps are milia or something else.
A clinician can confirm the diagnosis, rule out other conditions, and remove persistent milia safely without the scarring risk of home removal. If you want a personalized read on your skin, a dermatology-overseen tool like Nolla can help you figure out what your bumps are and whether they need attention.
Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before starting any new skincare treatment, especially if you have underlying health conditions, are pregnant, or are taking medications.
