The hard white stuff in pimples, known as pus, is a mix of dead white blood cells, trapped oil (sebum), dead skin cells, and bacteria (like C. acnes) that your immune system sends to fight infection in a clogged pore. This fluid builds up, forming a white or yellowish head on inflamed acne, like a pustule, as your body tries to clear the blockage.
Known also as cystic acne, hard pimples arise when skin pores become clogged with oil, dead skin cells, and bacteria. This blockage, occurring deep within the hair follicle, leads to infection and inflammation, forming a hard lump beneath the skin's surface.
That white, hard material you see when popping pimples is primarily pus—a mixture of dead white blood cells, bacteria, and debris. Pus is essentially your body's response to infection or irritation caused by clogged pores.
How are milia treated?
No, you should not squeeze milia because they are hard, keratin-filled cysts trapped under the skin with no opening, unlike pimples, and attempting to pop them can cause infection, inflammation, and permanent scarring. Professional removal by a dermatologist using a sterile needle or blade to make a tiny incision is the safest way to extract them, but they often disappear on their own over time.
While it is possible for milia to disappear on their own, in adults they very rarely do, and most of the time, once adult skin is prone to forming milia, it continues to do so. In adults, milia often become permanent unless professionally removed, which is generally done for cosmetic reasons.
It is extremely important to NEVER squeeze or try to cut out milia at home. You run the risk of seriously damaging your skin, along with developing an infection or permanent scarring.
You've probably heard that squeezing or picking at a pimple is not a great idea, and the same goes for sebum plugs. By squeezing, you can push the contents deeper into the skin or break the pimple open, which allows the bacteria inside the pimple to spread and any bacteria on your hands to enter the pore.
Warm compresses can help bring a pimple to a head so that the sebum, dead skin cells, and bacteria can exit the skin's surface. Using ice can help relieve inflammation. Other treatments, such as benzoyl peroxide and salicylic acid, may help manage acne and prevent pimples from forming.
Milia (singular: milium) are small keratin-filled cysts that form just beneath the surface of the skin. Unlike acne or whiteheads, they're not caused by clogged pores or bacteria. Instead, milia develop when dead skin cells become trapped instead of naturally exfoliating—creating hard, pearl-like bumps under the skin.
Pimples refill after popping because you often don't remove all the pus and debris, pushing some deeper, while the inflammation continues, and the pore wall itself can be damaged, allowing oil (sebum) and dead cells to collect again, leading to recurrence in the same spot. Popping also creates an opening for bacteria, causing more inflammation and new pimples nearby.
Sometimes, a brownish spot, known as the comedonal core, appears in the middle of the head. It is a plug of debris within the pore. Acne pustules range in size from small to fairly large.
You may be tempted to pop this unwanted guest, but it's not a good idea. Contrary to what pimple popping videos may show, squeezing your skin to extract the contents of a pimple — a mixture of oil, dead skin and bacteria — can cause scarring and infection.
The small, white bumps may be cysts known as milia seeds. People frequently confuse milia seeds with whiteheads. They may also try to squeeze the milia, which results in irritation or scabbing. As a result, you must understand the characteristics of milia to avoid mistaking it for acne and pinching it.
Your body can gradually break down pus and reabsorb its components. That's why small accumulations of pus (like in a pimple) often don't need treatment.
Nodular acne pimples appear as red bumps on the surface of your skin, with a firm lump deeper beneath the skin. Nodular acne is a type of inflammatory acne that occurs when hair follicles in your skin are blocked by excess oil (sebum), dead skin cells and bacteria.
Carbohydrates like sugar and fats are quickly absorbed by the bloodstream, which can lead to a spike in blood sugar levels and an overproduction of sebum, resulting in oily pores. Too many animal-based foods like meat and dairy might boost our bodies' hormone production, also stimulating our skin's oil glands.
Various at-home treatments can help to resolve hard pimples, including topical creams with benzoyl peroxide or salicylic acid, warm compresses to encourage the pimple to surface, and ice packs to reduce swelling and pain.
Sebaceous hyperplasia appears as small, shiny, spongy bumps on the surface of the skin. Usually they appear on the face, but they could develop anywhere on the body. The bumps may be a similar color to the surrounding skin, or slightly pink or yellow. They may also have a small indentation in the middle.
Squeezing also can lead to scabs and might leave you with permanent pits or scars. Because popping isn't the way to go, patience is the key. Your pimple will disappear on its own, and by leaving it alone you're less likely to be left with any reminders that it was there.
Manual extraction: A dermatologist can safely remove milia using a sterile needle or scalpel. This procedure should not be attempted at home to avoid infection or scarring. Chemical peels: Mild chemical peels can help exfoliate the skin and reduce the appearance of milia.
How to care for a blind pimple under the skin? Because of how deep-set pimples under the skin are, it's important to avoid squeezing to try and pop them. This will only irritate them and can cause infection. Instead, use supportive formulas which help to unclog and exfoliate the area.
They'll go away on their own after a few weeks or months. You may be tempted to pick at or pop the milia. This irritation may only make it worse and cause complications. Picking at the skin around the milia can lead to scarring or an infection.