Milia vs whiteheads: how to tell them apart
Whiteheads are clogged pores and a form of acne. Milia are tiny keratin cysts under the skin. How they differ in feel, place, cause and treatment.
By Nick, Founder of Skinli. Not a doctor. General education only.
Part of the Milia, which puts every step in order.
Milia and whiteheads are both small white bumps, and the names get mixed up all the time. They are different things. A whitehead is a clogged pore and a form of acne. A milium is a tiny cyst of keratin, the skin's tough surface protein, sitting just under the skin. They need different care, so telling them apart helps you choose the right next step. This guide compares them point by point. For the full picture of milia, see the hub guide, what milia are.
Skinli gives general education and is not a doctor. A dermatologist can tell the two apart by looking, sometimes with a skin microscope.
What a whitehead is
The American Academy of Dermatology (AAD) says: "A whitehead forms when excess oil and dead skin cells build up and plug the opening of a pore. This causes a blemish that is raised and white or flesh colored." Its medical name is "Closed comedo, which means 'closed pore.'"
Whiteheads are part of acne. The AAD lists them with blackheads, papules, pustules, nodules and cysts as the forms acne can take. The guides closed comedones and blackheads vs whiteheads cover them in depth.
What a milium is
StatPearls, a medical reference hosted by the U.S. National Library of Medicine, describes milia as "benign and transient subepidermal keratin cysts that present as small, firm, white papules." Subepidermal means under the top layer of skin. Each one is a closed cyst with a wall of skin cells and a core of keratin.
StatPearls says primary milia "arise from the lower infundibular sebaceous collar of the vellus hair follicles," a point near the base of the fine, soft hairs on most of the skin, and that secondary milia come more often "from the eccrine ducts," the ducts of sweat glands. MedlinePlus says milia are not a true form of acne.
Side by side
| Whitehead | Milium | |
|---|---|---|
| What it is | A pore plugged with oil and dead skin (AAD) | A keratin cyst under the top layer of skin (StatPearls) |
| Color | White or flesh colored (AAD) | White to yellow; may look bluish on darker skin (StatPearls) |
| Feel | Raised (AAD) | Firm (StatPearls) |
| Common places | Wherever acne appears | Eyelids, cheeks, nose, forehead (StatPearls) |
| Part of acne? | Yes, one of the forms of acne (AAD) | No, a separate condition (MedlinePlus) |
| Newborns | Neonatal acne appears around 2 weeks (AAD) | Present at birth in up to 40 to 50 percent (StatPearls) |
| First treatment | A retinoid such as adapalene plus benzoyl peroxide (AAD) | None needed in babies; clinician removal in adults (StatPearls) |
Clues you can check at home
These are clues, and a dermatologist makes the diagnosis.
- Other acne around it. Whiteheads are a form of acne. If you also have blackheads, red pimples or pustules on the same area, ask whether the white bumps are part of that acne.
- Place. StatPearls says milia that appear in adults "tend to occur on the eyelids, cheeks, forehead, and genitalia." The StatPearls chapter on eyelid bumps says small cysts of 1 to 2 mm on the lids "are called milia."
- Hardness. StatPearls calls milia "firm" and says they hold solid keratin.
- Time. Milia in adults "may continue without treatment," StatPearls says, so a bump that has looked the same for months fits milia.
- Response to acne treatment. The AAD says to give whitehead treatment "six to eight weeks to work." If a bump is unchanged after that, it may be a milium or something else.
The doctor has a tool you do not. The 2026 Cureus case report below used dermoscopy, a lighted magnifier held on the skin, and found that milia "characteristically appear as well-defined, homogeneous white to yellowish structures without associated vascular patterns," meaning an even white or yellow dot without visible small blood vessels.
Why the treatments differ
Whiteheads. The AAD says: "To unclog pores, dermatologists recommend using a retinoid. You can buy one retinoid, adapalene, without a prescription. You'll also want to use a benzoyl peroxide wash." It says to "Give treatment six to eight weeks to work," and that "A procedure like comedo (medical term for blackheads and whiteheads) extraction may help." The guide how to get rid of whiteheads covers the full routine.
Milia. StatPearls says newborn milia need no treatment. For adult milia that do not clear, it describes "evacuation with a tiny incision and tangential pressure applied with a comedone extractor or curette," and for many milia, "topical retinoids and electrodesiccation or electrocautery." See milia removal.
So a retinoid appears on both lists. For whiteheads, the AAD recommends it as first-line treatment. For milia, the support is a handful of case reports, set out in retinoids for milia. Benzoyl peroxide and salicylic acid, standard acne treatments, are absent from the medical milia treatment lists. The adapalene label says to "Avoid product contact with eyes," which matters because so many milia sit near the eyes.
Why squeezing works differently
A whitehead sits in a pore, so a dermatologist can extract it with sterile tools. The AAD says "When performed by a dermatologist, acne extraction is a safe way to get rid of blackheads and whiteheads," and warns that squeezing at home can cause scars and infection.
A milium has no pore opening. StatPearls says doctors make "a tiny incision" before pressing, or, on the eyelids, use a needle "to remove the epidermis directly above the cyst." Squeezing a milium without that step presses a hard core against closed skin. The guide can you pop milia explains the risks.
On brown and black skin
Color clues shift with skin tone. StatPearls says milia "in darker skin, they may show a subtle blue tint." The NHS says milia on babies "may appear white or yellow, depending on your child's skin colour." The AAD says whiteheads can be "white or flesh colored," so on darker skin a whitehead may look like a small bump the same color as the skin around it. Texture and place help more than color here: milia are firm and often sit near the eyes, while whiteheads appear where the rest of the acne is.
A simple plan if you are not sure
- Take a clear photo of the bumps in daylight, so you can compare later.
- Leave them alone. Do not squeeze either kind at home.
- If you have acne around them, start the AAD's whitehead routine on the acne areas: a retinoid such as adapalene once a day, plus a benzoyl peroxide wash. Keep the retinoid away from your eyes, lips and mouth, as the adapalene label says.
- Wait six to eight weeks, the time the AAD gives whitehead treatment to work.
- Compare your photos. Check which bumps have changed. Bumps that look the same are worth showing to a dermatologist, who can confirm what they are and remove milia if you want.
If the bumps are only on your eyelids, skip steps 3 to 5 and see a dermatologist, because the adapalene label says to avoid the eyes, and the eyelids are one of the places StatPearls names for adult milia.
Milia and acne together
You can have both. A 2026 case report in the journal Cureus describes a 17-year-old treated with isotretinoin for acne who developed 15 to 20 milia under his eyes. The authors write that the milia's "uniform size, pearly-white appearance, and lack of inflammatory features distinguished them from comedonal or inflammatory acne lesions." Comedonal acne is acne made of blackheads and whiteheads. The doctors removed the milia and continued the acne treatment. If you have acne as well as milia, Skinli's free photo plan at /analyze builds an acne routine; show the milia to a dermatologist.
In babies
Newborns can have both milia and acne, at different times. MedlinePlus says irritated milia are sometimes wrongly called "baby acne." The AAD says neonatal acne usually appears at 2 weeks of age and can develop any time before 6 weeks. The guide milia in babies compares them.
Other white bumps
Not every white bump is one of these two. StatPearls lists sebaceous hyperplasia, flat warts and small calcium deposits among the conditions doctors must tell apart from milia. The guides white bumps that are not milia and sebaceous filaments cover other lookalikes.
When to see a doctor
See a dermatologist if a white bump has not changed after six to eight weeks of acne treatment, if bumps sit on your eyelids, or if you cannot tell what they are. See a doctor promptly for any bump that grows, bleeds, changes or spreads.
Frequently asked questions
Do i have milia or whiteheads?
Milia are firm, white keratin cysts that StatPearls says often sit on the eyelids, cheeks and forehead, and may last for months in adults. Whiteheads are a form of acne: the American Academy of Dermatology says they form when oil and dead skin plug a pore. StatPearls lists comedonal acne, made of whiteheads and blackheads, among the conditions to tell apart from milia. A dermatologist can confirm which you have.
How to know if it's milia or whitehead?
Milia and whiteheads differ in where they sit and what they are made of. StatPearls, the NIH-hosted reference, describes milia as small, firm, white keratin cysts under the top layer of skin, common on the eyelids and cheeks. The American Academy of Dermatology describes a whitehead as a raised white or flesh-colored bump where oil and dead skin plug a pore opening.
Are milia acne?
Milia are a separate condition from acne. MedlinePlus, from the U.S. National Library of Medicine, says calling irritated milia baby acne is incorrect because milia are not a true form of acne. The American Academy of Dermatology lists whiteheads, blackheads, pimples, nodules and cysts as forms of acne, each starting in a pore. Milia are keratin cysts that StatPearls says arise near fine hair follicles or sweat ducts.
Can milia pop like a pimple?
Milia cannot pop like a pimple. A pimple with pus holds a yellowish fluid, the American Academy of Dermatology says, while StatPearls describes milia as closed cysts with a hard keratin core. Doctors remove milia by making a tiny incision and pressing, or lifting the skin on top with a needle. Squeezing a milium at home presses on closed skin and can cause scars.
How to get rid of milia or whiteheads?
Milia and whiteheads need different treatment. For whiteheads, the American Academy of Dermatology recommends a retinoid such as adapalene with a benzoyl peroxide wash, given six to eight weeks. For milia, StatPearls describes removal by a clinician with a tiny incision and pressure, and lists topical retinoids for many milia. Newborn milia need no treatment and clear on their own.
Are milia hard?
Milia are hard to the touch. StatPearls describes them as small, firm, white papules, and says each one holds keratin, the tough protein of the skin surface, inside a wall of skin cells. That solid core is why milia do not squeeze out like whiteheads or pimples. The American Academy of Dermatology describes a whitehead as a raised bump in a plugged pore.
Are milia in pores?
Milia are cysts next to hair follicles or sweat ducts, and whiteheads are plugs inside pores. StatPearls says primary milia arise from the lower part of the fine vellus hair follicle near the oil gland, and secondary milia more often from sweat ducts. The American Academy of Dermatology says a whitehead forms when oil and dead skin cells plug the opening of a pore.
Are milia always white?
Milia are usually white, and can be yellowish or look bluish on darker skin. StatPearls describes them as white-to-yellow, smooth, dome-shaped bumps under 3 millimeters that may show a subtle blue tint in darker skin. The NHS says milia on babies may look white or yellow depending on skin color. Whiteheads can be white or flesh colored, the American Academy of Dermatology says.
Does whitehead treatment work on milia?
Whitehead treatments have not been tested on milia, with one partial exception. StatPearls lists topical retinoids, the first choice for whiteheads, among the options for multiple milia, supported by case reports. Benzoyl peroxide and salicylic acid, other whitehead treatments, do not appear in the StatPearls list of milia treatments. A clinician can remove milia that acne products leave behind.
Can you have milia and acne at the same time?
You can have milia and acne at the same time. A 2026 case report in Cureus described a 17-year-old with acne who developed 15 to 20 milia under his eyes during isotretinoin treatment, and doctors removed the milia while continuing the acne treatment. The authors used a skin microscope, called a dermoscope, to tell the milia apart from acne whiteheads.
Sources
- Acne: Signs and symptoms (American Academy of Dermatology)
- How to treat different types of acne (American Academy of Dermatology)
- Milia (StatPearls, NCBI Bookshelf, U.S. National Library of Medicine)
- Milia (MedlinePlus Medical Encyclopedia, U.S. National Library of Medicine)
- Isotretinoin-Associated Eruptive Milia: A Rare Adverse Effect (Cureus (PubMed Central))
- Rashes in babies and children (NHS)
- Differin (adapalene) gel 0.1%, Drug Facts label (DailyMed, U.S. National Library of Medicine)
- Pimple popping: Why only a dermatologist should do it (American Academy of Dermatology)
- Benign Eyelid Lesions (StatPearls, NCBI Bookshelf, U.S. National Library of Medicine)
Opens LinkedIn with a link to this guide.
A doctor can tell you what this is.
Skin that hurts, spreads, bleeds, weeps or does not get better needs a doctor or a dermatologist. They can confirm what it is and offer treatment that needs a prescription.
Skinli gives general education about milia and is not a doctor. Never pick, pop or cut milia near your eyes. See a doctor for a new bump that grows, bleeds, changes or spreads, for spots on a baby who also has a fever or seems unwell, and for any bump you cannot tell apart from other bumps.