That hard, black thing coming out of a pimple is an oxidized sebum plug, made of hardened oil (sebum), dead skin cells, and sometimes keratin, forming a blockage in the pore that turns dark from air exposure, not dirt. It's essentially a blackhead's core material, and extracting it can sometimes reveal a waxy, thread-like sebaceous filament beneath, which is a normal part of your skin's oil production.
A blackhead is just an open pimple where the sebum plug has been exposed to air. It appears as a small dark or black bump on the skin's surface. The dark colour or black dot is not due to dirt but rather the oxidisation of the sebum and dead skin cells within the pore.
You should avoid squeezing your sebaceous filaments. Sebaceous filaments are natural, and if you manage to squeeze out sebum, your pores will fill up again within 30 days. Your skin is sensitive, and your nails are much stronger than your skin.
Symptoms of keratin plugs include small bumps, usually on the upper arms, butt, thighs or cheeks. You might mistake a keratin plug for acne. But they aren't the same as pimples. They often develop in clusters or groups and feel rough (like sandpaper) when you touch them.
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.
Regular cleansing with non-comedogenic skin care products usually resolves clogged pores. Some people need special skin ointments that contain retinol or salicylic acid.
A sebum plug is due to excess sebum or an accumulation of dead skin cells. They commonly appear on the chin or forehead and stick out of your skin. They may seem harmless at first glance, but sebum plugs on the skin's surface can lead to bacteria buildup, redness, inflammation, acne, and breakouts.
Milia are small white seed looking bumps. They are different than blind pimples because you can see the hard rice looking “seed” of packed keratin inside them. This is because they are closer to the skin's surface than an inflammatory acne papule is.
Don't pop or squeeze a blood-filled pimple. That can cause: Infection. More pimples.
On the other hand, bumps caused by STDs, like herpes sores or genital warts, are often accompanied by pain, itching, or changes in appearance, and they tend to appear near the vulva, vagina, and anus.
Additionally, popping a pimple can lead to a nodule (hard, red, painful blemish deep within the skin) or a cyst. The most serious form of a blemish, cysts are large and painfully inflamed lesions.
In the case of pimples, the production of pus is a normal part of the body's immune response. However, repeated pus refilling in a pimple may suggest that the infection has not been fully resolved.
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.
As more of this detritus collects and the pore remains clogged, it can dilate in size due to its packed contents. Prolonged exposure to the air causes the blockage to oxidize and darken. Because the pore gets stretched out of shape, it will fill back up again even after it is emptied.
It's common for the pores on your face to become blocked. Start by cleansing twice daily with a foaming cleanser. Look for ingredients like salicylic acid and lactic acid, which are gentle exfoliants that help sweep away any dead cells clinging to your epidermis. You shouldn't cleanse your skin more than twice daily.
While Vaseline doesn't directly dissolve blackheads, it does soften keratin and sebum inside the pores, allowing them to be removed more easily — a gentler alternative to forceful squeezing.
The best skincare for black heads are the ones that can dissolve the buildup in the pores and regulate oil production. Salicylic acid is a great ingredient to combat blackheads because it can penetrate into the pores to work to break down the plugs of oil and dead skin.
Some untreated blackheads are a bit more stubborn than others and can become inflamed or infiltrated by bacteria. What happens if you don't remove blackheads like these? They'll likely turn into deep blackheads and, eventually, pimples.
It is possible to help shrink a cystic pimple at home by following some basic self-care tips. Using a warm compress can help draw the pimple to the surface of the skin, which can promote healing. Using topical products and cleansing the face regularly can also help clear pimples and prevent them from coming back.
Tunnel Formation in Hidradenitis Suppurativa
HS is an inflammatory skin condition that causes lumps or nodules to form underneath the skin. These nodules can look like acne, pimples, blackheads, or cysts (fluid-filled bumps). Sometimes, the lumps go away on their own. Over time, HS nodules can grow and join together.