Milia: Why Those Hard White Bumps Aren't Whiteheads (and You Can't Squeeze Them Out)

Why are there hard white bumps under my eyes that won't pop?

Short answer: They're probably milia — tiny, sealed cysts of trapped keratin, not clogged-pore whiteheads. Squeezing won't empty them, many fade on their own, and a dermatologist can safely remove the stubborn ones in minutes.

What milia actually are (and why they're not whiteheads)

A milium is a true cyst: a sealed pocket of keratin sitting just beneath the skin's surface, usually 1 to 2 millimeters across [2][3]. That's a different thing from a whitehead. Whiteheads are comedones — a hair follicle gets blocked with a mix of sebum (oil) and keratin, and because there's an actual plugged opening, oil- and bacteria-targeting acne treatment can reach it [3]. Milia are different: primary milia originate from the sebaceous collar around a fine vellus hair follicle, but the resulting cyst seals itself off completely — it has no opening to the surface the way a comedo does [2]. That's the whole reason typical acne treatment doesn't touch them: there's no open plug to dissolve, no oil to control, no bacteria to clear out.

Primary vs. secondary milia — why they show up

Primary milia form spontaneously and are extremely common on the eyelids, cheeks, and nose in both children and adults [2]. Newborns get a version of this too — up to 40 to 50% of full-term babies have tiny milia, usually on the nose, at birth, and these almost always clear on their own within the first weeks of life [1][2].

Secondary milia are different: they show up after something disrupts the skin. Documented triggers include physical trauma such as dermabrasion or radiotherapy, blistering skin conditions, and chronic use of topical steroid creams [2]; they can also form at the site of an injury as skin heals, or after certain topical medications [1]. In plain terms, secondary milia are a side effect of skin repair — as a damaged follicle or duct regenerates, a bit of keratin gets sealed off instead of shedding normally, and a new milium is the result [1][2].

Why squeezing doesn't work — and what actually helps

It's tempting to treat a milium like a pimple, but that backfires. A pimple has an opening that pressure can push contents through; a sealed cyst doesn't. Cleveland Clinic's patient guide is blunt about it: "You shouldn't try to squeeze or scrape off milia on your own, as you might do with a pimple. This can scar your skin or cause an infection" [4].

The professional version looks similar but is genuinely different: a clinician de-roofs the cyst with a sterile needle or blade tip, then applies gentle pressure — often with a comedone extractor or curette — to lift the contents out [1][2][4]. For recurrent milia, some dermatologists may consider topical retinoids, but that is not a proven prevention strategy for every person [5]. A cream should not be expected to dissolve an existing sealed cyst [1][2][4].

If you're not sure whether something already in your routine is a retinoid, or a heavier product that could be irritating healing skin, Scan can read the ingredient label for you.

FAQ

Do milia go away on their own?

Sometimes, yes — especially in babies, where they typically clear within the first few weeks of life without treatment or scarring [1][2]. In older kids and adults, primary milia can also fade untreated over a few months, but they don't always, and secondary milia (tied to an injury, a rash, or steroid cream) are more likely to stick around until they're professionally removed [1][2].

Will a retinol or retinoid cream get rid of a milium I already have?

Probably not the one that's already there — a sealed cyst is usually physically opened and emptied by a clinician [1][2][4]. Retinoids may be considered for recurrent milia, but the cited material does not establish a universal prevention effect [5].

Is it safe to use an at-home extraction tool or needle on milia?

Medical guidance is consistent that self-extraction risks scarring and infection, since it's hard to replicate a clinician's sterile technique at home [4]. If a milium bothers you, an in-office extraction is the lower-risk path compared to a DIY attempt.

Are milia caused by poor hygiene or dirty skin?

No. Milia aren't comedones and aren't caused by oil, dirt, or clogged pores the way acne is [3]. They're sealed keratin cysts that form for structural reasons, or after skin trauma — not because of anything left unwashed.