As a pimple heals, your body sometimes produces cells with too much melanin in them to replace the damaged skin. This results in post-inflammatory hyperpigmentation, which we sometimes just call a dark spot.
Blackheads are comedones that are open at the surface of the skin. They are filled with excess oil and dead skin cells. It's not dirt that causes the comedone to turn black. The black hue results from the irregular reflection of light coming from clogged hair follicles.
It's tempting, but popping or squeezing a pimple won't necessarily get rid of the problem. Squeezing can push bacteria and pus deeper into the skin, which might cause more swelling and redness. Squeezing also can lead to scabs and might leave you with permanent pits or scars.
If the pore remains clogged once it opens, the blemish turns to a blackhead as it oxidizes. Face exfoliation can speed up the process of opening and unclogging the pores.
Blackheads break the surface of the skin, which is why they are called open comedones. Their black appearance is not because of dirt but because of air reacting to the inside of a pimple. Papules. These form when an infected skin pore or follicle is near the skin surface.
One reason a pimple keeps popping up in the same place is that the pore it developed in is damaged -- usually the result of too much picking. Prodding at a pimple can loosen the cell lining of the pore and cause the clogged oil to slip deeper into the skin, creating an inflammatory reaction.
Blackheads, or open comedos, are clogged pores that are filled with dead skin cells and oil, not dirt or grime as myth may suggest. The blackish portion of a blackhead — aka the sesame seed — is due to the oxidation of the dead skin cells and oil when exposed to air.
Nodules are hard lumps that form deep inside the skin. Cysts are large, soft, and filled with pus.
Hard pimples develop when dead skin cells, sebum, and bacteria enter the skin's surface. Once under the skin, bacteria can multiply quickly. This can cause the skin to become irritated and even infected. Hard pimples appear as raised bumps on or under the skin's surface.
If bacteria living on the skin also become stuck in the follicle, this can cause inflammation and infection. White blood cells flow in to fight infection, and, as a result, dead white blood cells, bacteria, and other debris form pockets of pus. Pus filled pimples do not reflect an individual's cleanliness.
If you're bleeding, she says to “gently blot the area with a clean tissue or cotton pad and clean the area with alcohol.” Once the blood has stopped, she advises applying a spot treatment containing benzoyl peroxide or salicylic acid as mentioned above.
Pimple pus is made from sebum (oil) that gets trapped in your pores, along with a combination of dead skin cells, debris (such as makeup), and bacteria. When you have inflammatory acne lesions (such as pustules, papules, nodules, and cysts), your immune system activates in this area, resulting in noticeable pus.
Blood-filled pimples are a result of picking or popping pimples. They are not serious and will not cause any lasting damage to your skin unless you repeatedly pick at them, which can lead to scarring.
Pimples hurt because the body is trying to get rid of the stuff that doesn't belong there. The redness, swelling, and inflammation cause the pain. The body knows that the dead skin, oil, and bacteria are supposed to be in the hair follicle (which is outside the skin).
Don't pop or squeeze a blood-filled pimple. That can cause: Infection. More pimples.
“If you pop the pimple, it becomes a micro-wound,” explains Kazin. At this point, it's best to apply a little antibiotic ointment like Neosporin ($6, drugstore.com) at night to help speed up healing. Allowing it to “breathe” during the day without anything on it, if possible, will also help it mend faster.
Blind pimples are pimples (zits) that form under your skin. They may stay under your skin's surface, causing pain and inflammation. Or they may erupt through the surface in the form of a whitehead, blackhead or red bump. Treatment includes warm compresses and acne-fighting creams.
While waiting is never fun, it's worth it when it comes to pimple-popping. Basically, what happens if you don't pop a whitehead is that it goes away on its own, usually in 3 to 7 days. It may happen that you wake up one morning and notice the pimple is gone.
Popping pimples releases dopamine
After feeling and hearing that “pop”, some people get an immediate sensation of pleasure and relief. That's because dopamine — the happy-hormone — is released when you feel a sense of accomplishment.
However, multiple sebaceous oil glands can be connected to each pore, so the sebum clogged beneath your initial pimple can lead to nearby pores getting clogged. This, in turn, leads to multiple pimples in one spot.
Also called milium cysts, milk spots, oilseeds, or pearl acne, no matter what you call them, milia are decidedly unattractive, small or moderate-sized, round or dome-shaped, white or yellow bumps that are easily visible beneath the skin.
At the root of all breakouts is a clogged pore. Within each pore is a sebaceous gland, a gland that secretes sebum, an oil that keeps the skin protected. If a pore is blocked - by excess oil, dead skin cells, and/or bacteria, a breakout can develop.
Post-inflammatory erythema (PIE) is the residual red, pink, or purple spots left behind by acne breakouts. PIE goes away on its own, but it can be resolved more speedily when dermatological treatments are used.