What Causes Milia? Those Tiny White Bumps Decoded

If you’ve ever squinted at your reflection and noticed those teeny-tiny, un-poppable white pearls under your skin, you’ve met milia. They aren't whiteheads, they aren't undergrounders, and no amount of squeezing will make them go away. 

While they’re totally harmless, milia can be a major source of frustration when you're aiming for that smooth-skin finish. They require a bit more of an attentive skin care solution than your average breakout, as you’ll see next. 

3 Key Takeaways 

1. Keratin, Not Clogs: Milia are tiny cysts of hardened protein (keratin), not oil. Because they live under the skin rather than in a pore, they have no exit, which is why they can't be popped. 
2. The Occlusion Effect: Heavy, buttery eye creams can smother thin skin, trapping dead cells and forming those signature white pearls. 
3. Chemical Exfoliation is Best: You can’t scrub milia away. Targeted chemical exfoliants like lactic acid are the best way to nudge these bumps toward the surface. 

What is Milia, Anyway? 

Milia are tiny keratin-filled cysts. Keratin is the protein that makes up your hair, nails and the outer layer of your skin. Usually, dead skin cells slough off naturally, but sometimes they get lazy. When those cells get trapped under the surface of the skin instead of shedding, they harden into a miniature pearl. 

Because they aren’t connected to a pore (unlike a pimple), they don't have an opening to escape from. This is why they feel like little grains of sand stuck under your skin. 

Why Can't I Just "Pop" Them? 

Because milia are sub-epidermal, meaning they live under a layer of healthy skin, there’s nothing to reach onto. If you try to squeeze them like a blackhead, you’re just damaging the surrounding tissue and the surface skin layer, which leads to redness, scarring and potentially a permanent mark. To get them out, the skin’s "roof" has to be professionally lifted, something best left to a sterile lancet and a licensed esthetician. 

The Main Culprits: Why They Form 

So, why is your skin hoarding keratin? It usually boils down to a few lifestyle and biological factors: 

• The "Heavy Hitter" Products: Using rich, occlusive moisturizers or oil-based eye creams can create a film that traps dead skin cells. If you're prone to milia, your skin might be telling you it's time to swap the thick balms for a water-based gel. 
• Sluggish Cell Turnover: As we get older (or just during high-stress periods), our skin’s natural exfoliation process slows down. If you aren't helping it along with gentle acids, those cells are more likely to get trapped. 
• Sun Damage: Long-term sun exposure can actually thicken the skin's outer layer, making it harder for cells to reach the surface and flake off. 
• Skin Trauma: Sometimes milia appears as a side effect of a blister, a burn or even a heavy-duty chemical peel that didn't heal correctly. 

The Eye Area: Milia's Favorite Hangout 

You’ll most often see milia around your eyes and on the cheekbones. This isn't a coincidence. The skin around your eyes is significantly thinner and lacks the oil glands found elsewhere on your face. This makes it easier for keratin to get stuck and harder for your skin to push it out naturally. 

How to Smooth Things Over 

Since milia lives under the radar, you can’t scrub them away. Here’s the game plan:  

• Switch to a Liquid Exfoliant: Look for lactic acid or salicylic acid. They help dissolve the glue between dead cells without irritating the surface. 
• Lighten Your Layers: Swap your heavy nightly creams for lightweight formulas. 
• See a Professional: If they’re really bothering you, an esthetician or dermatologist can use a sterile lancet to nick the skin and extract them. Whatever you do: Do not try this with a safety pin in your bathroom. 

Milia: All Your Questions Answered 

1. Is milia just another word for whiteheads? Not quite. Whiteheads are pores clogged with oil and bacteria (sebum). Milia are tiny cysts filled with keratin, a hard protein. Because milia aren't inside a pore, they don't have an opening to the surface, which is why they feel hard and won't pop. 

2. Can I use a scrub to get rid of them? Surprisingly, no. Since the keratin is trapped underneath a layer of healthy skin, you're better off using chemical exfoliants (like lactic or salicylic acid) that dissolve the bonds of dead skin more deeply. 

3. Is my eye cream causing this? It might be. The skin around the eyes is very thin and doesn't have the oil glands needed to process heavy, occlusive creams (think petroleum or thick waxes). If your cream is too rich, it can smother the skin and trap cells. Swapping to a lightweight eye cream often stops new milia from forming. 

4. Why do they suddenly appear after a sunburn? This is known as secondary milia. When the skin is damaged by UV rays or blistering, the healing process can sometimes trap skin fragments in the new layer of tissue that forms. It’s essentially your skin's way of healing a little too quickly and locking the door before all the debris is out. 

5. Will milia eventually go away on its own? Sometimes, but it’s a slow game. Because the skin naturally sheds, the milia will eventually work its way to the surface, but this can take weeks or even months. If you’re looking for a faster fix, a professional extraction is the only "instant" solution. 

6. Can I lance them at home if I’m careful? We strongly advise against it. Because milia sits under the epidermis, you must break the skin to get them out. Doing this at home, even with a needle, usually leads to scarring, infection or permanent pitting that’s much harder to fix than a tiny white bump. 

Are you struggling with milia? Check out the rest of our milia guides below.

• What Prevents Milia?
• How To Get Rid of Milia Around the Eyes
• On Using a Scrub for Milia
• Ultimate Guide To Milia

Visit your nearest Eminence Organics Spa to learn more about milia and the most suitable skin care treatments to remove them.