Pori
- Blackheads are clogged pores (a mild form of acne) with a dark plug; sebaceous filaments are normal oil-gland linings that look like flat gray or tan dots.
- Filaments can't be removed and refill within about 30 days if squeezed; you can only make them less visible.
- For blackheads, use a salicylic acid product daily plus a retinoid such as adapalene at night, and give it six to eight weeks.
- Don't squeeze: it can push the plug deeper, inflame the skin and scar. Deep blackheads need professional extraction.
Blackheads are clogged pores, a mild form of acne, with a dark plug that sits in a small bump. Sebaceous filaments are normal structures that line every oil gland and carry oil to the surface: they look like flatter, smaller, gray, tan or yellowish dots, mostly on the nose. Blackheads can be cleared and prevented; filaments can only be made less noticeable.
The rest of this guide shows how to tell the two apart in the mirror, why blackheads turn dark, what actually clears them (with concentrations and timelines), whether squeezing is ever a good idea, and how to keep filaments in check without irritating your nose.
What is the difference between blackheads and sebaceous filaments?
A blackhead is a blocked follicle; a sebaceous filament is an open one doing its job. Cleveland Clinic describes blackheads as open, dark bumps filled with excess oil and dead skin, with a plug of sebum at the surface. Filaments are thin, threadlike linings of the oil glands that move sebum to the skin, have no plug, and help keep skin hydrated. Everyone has them.
| Blackhead | Sebaceous filament | |
|---|---|---|
| What it is | Clogged pore, a type of acne (open comedone) | Normal lining of an oil gland |
| Color | Dark, close to black | Gray, light brown or yellowish |
| Look and feel | A dark dot in a slightly raised bump | Smaller, flatter dots that sit evenly in the skin |
| Where | Nose and chin most often; also cheeks, neck, back and chest | Nose most noticeably; also forehead, chin and cheeks |
| If squeezed | A dark, waxy plug may come out | A pale, waxy thread may come out |
| Comes back | Can return unless the routine keeps pores clear | Refills within about 30 days |
| What helps | Salicylic acid, retinoids, professional extraction | Gentle cleansing, salicylic acid, retinoids; only reduce visibility |
The comparisons come from Cleveland Clinic's pages on sebaceous filaments and blackheads.
What are sebaceous filaments?
Sebaceous filaments are a normal, healthy part of your skin that channel oil from the glands to the surface. They become more visible when glands make more oil. Cleveland Clinic lists the factors that make them stand out: puberty, when oil glands enlarge; skin loosening in your 40s and 50s; drying the skin with sun or excessive washing, which can push glands to overproduce oil; and thicker hair follicles. They aren't acne, aren't contagious and don't hurt.
Because they're structural, you can't get rid of them. If you squeeze them out, the pores may refill within 30 days, which is why the dots on your nose seem to come back no matter what you do.
Why are blackheads black?
Blackheads are dark because of the pigment and light at the opening of the pore, not dirt. DermNet says open comedones are black because of surface pigment (melanin), rather than dirt. Cleveland Clinic adds that irregular light reflection off the clogged follicle contributes to the dark look. Either way, scrubbing harder won't wash them out, and over-washing tends to backfire.
Blackheads form when a follicle clogs with oil and dead skin. The contributing factors Cleveland Clinic lists are increased sebum, abnormal keratin buildup, higher androgen hormones and more acne-causing bacteria.
How do I get rid of blackheads on my nose?
Use a salicylic acid product daily and add a retinoid, then give it six to eight weeks. That combination keeps dead skin from collecting in the pore and clears existing plugs gradually. A simple plan:
- Cleanse once or twice a day with a mild cleanser and warm water. Choose non-comedogenic makeup and skin care and remove makeup every night.
- Add salicylic acid. A Cleveland Clinic dermatologist's go-to is a salicylic acid wash once a day, starting with a 2% to 4% product and dropping the strength if it dries your skin. Pads and toners work too.
- Use a retinoid at night. The AAD says dermatologists recommend a retinoid for blackheads and whiteheads, and adapalene is sold without a prescription. One easy split is salicylic acid in the morning and a retinoid at night. Retinoids can cause peeling, which using them every other day or with a moisturizer can reduce. Start with our retinol for beginners guide, and check skincare ingredients not to mix before stacking actives.
- Exfoliate only a couple of times a week. Over-exfoliating dries the skin, which can increase oil and blackheads.
- Wait six to eight weeks. That is how long the AAD says to give treatment to work before deciding it hasn't. DermNet notes improvement can take several weeks to months and that treatment often needs to continue long term.
Other ingredients worth knowing
- Azelaic acid is milder and suits sensitive skin, though Cleveland Clinic calls it less potent than salicylic acid or retinoids for blackheads.
- Glycolic acid at about 10% is suggested as an exfoliating alternative.
- Benzoyl peroxide reduces acne bacteria but doesn't directly clear blackheads. It earns its place if you also get red, inflamed pimples.
If your nose is oily overall, our oily skin routine fits these steps into a full morning and evening order.
Why do blackheads keep coming back on my nose?
Blackheads come back because the conditions that clog the pore are still there: oil, dead skin and the follicle itself don't change when one plug is gone. The AAD notes that blackheads and whiteheads can return, so you need an ongoing skin care plan to prevent new ones, and DermNet says comedonal acne treatment often has to continue long term, sometimes for many years. The good news from Cleveland Clinic is that blackheads often go away in early adulthood, though some people have them for life.
Several everyday factors make new clogs more likely. DermNet lists overhydrated skin from heavy moisturizers or humidity, oily hair pomades and some cosmetic ingredients, follicle damage from squeezing, abrasive washing, peels or lasers, smoking, and diets high in milk products and high glycemic-index foods among the contributors. A few practical checks follow from that:
- Audit your products. Hair products that touch the forehead and heavy face creams are common suspects; switch to non-comedogenic versions.
- Stop scrubbing. Abrasive washing damages follicles, and drying the skin through sun or excessive washing can push oil glands to overproduce.
- Wear SPF 30 daily. A Cleveland Clinic dermatologist recommends a moisturizer with SPF 30 or higher, noting that sun exposure can increase oil production.
- Keep your hands off your face. Touching and picking moves oil and bacteria into pores and is on every prevention list, including Cleveland Clinic's.
Does salicylic acid work on sebaceous filaments?
Yes, to a point: it makes them less visible but won't remove them. Cleveland Clinic lists salicylic acid, retinoids and gentle exfoliation among the ways to make filaments less noticeable, because salicylic acid dissolves dead skin cells and helps prevent clogged follicles. Expect a softer, less dotted look rather than a clear nose, and expect it only while you keep using it. Because the same steps also make pores look smaller, our guide on how to minimize pores covers the overlap.
Should you squeeze blackheads?
No. Squeezing often pushes material deeper, increases inflammation and can scar. The AAD warns that popping at home can cause permanent acne scars, more noticeable acne and more pain, that bacteria from your hands can infect the spot, and that trying to squeeze out a blackhead can delay clearing. Cleveland Clinic adds that picking can cause hyperpigmentation and permanent scarring, and it warns that fingernails can irritate or seriously damage the skin when you squeeze filaments.
Deep blackheads are a different case. Shallow ones may clear on their own, but deeply embedded blackheads usually don't; a dermatologist or medical aesthetician can remove them with a comedo extractor. The AAD says dermatologists use sterile instruments to remove blackheads and whiteheads, usually after other treatment has failed.
Do pore strips work?
Pore strips work briefly and only on what's in the pore at that moment. A Cleveland Clinic dermatologist says strips can temporarily clear pores, which can be handy before an event, but they don't fix the cause and can irritate and dry the skin. They pull out filaments along with blackheads, and Cleveland Clinic cautions that they can dry out skin and may let bacteria in. Use them sparingly, if at all, and don't count on them for lasting change.
When should you see a dermatologist for blackheads?
See a dermatologist if blackheads come with more severe acne, if they're deep and don't clear, or if six to eight weeks of over-the-counter treatment hasn't helped. Cleveland Clinic recommends a dermatologist when blackheads occur with more severe acne and suggests talking to a provider if they cause anxiety or depression. Options beyond the drugstore include prescription-strength retinoids, oral antibiotics, microdermabrasion, chemical peels and laser resurfacing. For filaments, a provider can prescribe medication that reduces oil production if over-the-counter products don't help.
How can you track whether blackheads are clearing?
Blackheads clear slowly and unevenly, so photos beat memory. Pori gives each selfie a Pores & Texture score as part of its skin breakdown, and its progress charts and before/after comparison show whether your nose and chin look clearer over six to eight weeks. Take scans in the same light and at the same distance each time. For breakouts beyond blackheads, see how to track acne progress.
An app can't tell a blackhead from a filament with medical certainty or diagnose acne. If you're unsure what you're looking at, or bumps are painful or spreading, a dermatologist can tell you.
Frequently asked questions
How do I know if it's a blackhead or a sebaceous filament?
Blackheads are darker, often close to black, and sit in a small raised bump. Sebaceous filaments are smaller, flatter and gray, tan or yellowish, and they're most noticeable on the nose.
Can you get rid of sebaceous filaments permanently?
No. They are a normal part of every oil gland and refill within about 30 days if squeezed out. Gentle cleansing, salicylic acid and retinoids can make them less noticeable.
Is salicylic acid good for blackheads?
Yes. Salicylic acid dissolves the dead skin cells that clog pores, and a Cleveland Clinic dermatologist suggests a daily salicylic acid wash. The same source suggests pairing it with a retinoid at night.
Should I squeeze blackheads on my nose?
No. Squeezing can push the plug deeper, inflame the skin, let bacteria in and leave scars or dark marks. A dermatologist can remove stubborn blackheads with sterile tools.
Are blackheads caused by dirt?
No. DermNet says blackheads are dark because of melanin at the surface, not dirt. Scrubbing harder won't clear them and can irritate your skin.
How long does it take to get rid of blackheads?
Give a consistent routine six to eight weeks before judging it, as the AAD advises. Blackheads often return if you stop, so most people need ongoing treatment.
Sources
Pori is a wellness and skincare education app, not a medical device. This article is for general information and isn't medical advice. For anything that worries you, see a dermatologist.
