In this guide12 sections
- Key Points
- What Are Sebaceous Filaments?
- Sebaceous Filaments vs Blackheads: How to Tell the Difference
- Why Are My Pores So Big? What Causes Large Pores on Your Face
- How to Get Rid of Sebaceous Filaments and Remove Them Safely
- Squeezing Sebaceous Filaments: Do Pore Strips Work?
- How to Shrink Pores on Your Face, and Can You Close Them?
- Large Pores Treatment: The Best Clinic Treatments for Enlarged Pores
- When Large Pores Are Something Else
- Sebaceous Filaments and Large Pores FAQs
- Treatment for Large Pores in London
- References
Key Points
- What are sebaceous filaments? Thin columns of oil (sebum) and skin cells that line the inside of every pore and carry oil to the surface. They are a normal part of the skin, not a form of acne.
- Sebaceous filaments vs blackheads: filaments are grey or pale yellow, flat with the skin and evenly spread across the nose. Blackheads are darker, firmer, often slightly raised and fewer in number.
- Why pores look large: a 2016 review identified three main causes: high oil output, loss of the collagen and elastic support around the pore with age and sun, and a larger hair follicle. Men and people with oily skin tend to have bigger pores.
- You cannot remove sebaceous filaments permanently, because the skin needs them. Salicylic acid, retinoids and niacinamide keep them less visible; squeezing and pore strips only empty them for a few weeks.
- Pores do not open and close. Steam and ice change how they look for minutes, not their size.
- Clinic treatments for large pores include lasers, RF microneedling such as Morpheus8, microtox (intradermal micro-dose anti-wrinkle injections), chemical peels and prescription retinoids. The best choice depends on whether oil, ageing skin or acne scarring is the main cause.
Sebaceous filaments are the tiny grey or yellowish dots that most people notice on their nose, chin and forehead and assume are blackheads. They are one of the most searched skin questions in the UK, and also one of the most misunderstood, because they are a normal part of how the skin works. They sit inside the pores on your face, and when the pores themselves are large, the filaments become much easier to see.
This guide explains what sebaceous filaments are, how to tell them apart from blackheads, why some people have larger pores than others, and what actually helps, from skincare at home to clinic treatments such as laser treatment and Morpheus8. If the bumps on your face are soft, yellow and slightly raised rather than flat dots, they may be something different, such as sebaceous hyperplasia, which we cover further down. For an overview of every skin treatment we offer, see our skin and aesthetics treatments.
What Are Sebaceous Filaments?
Every pore on the face is the opening of a hair follicle, and attached to each follicle is a sebaceous gland that makes sebum, the skin’s natural oil. Sebum helps keep the skin supple and forms part of its protective barrier. To reach the surface, it travels up the follicle, and as it does so it mixes with skin cells shed from the lining of the pore.
A sebaceous filament is that mixture of sebum and skin cells, packed around the fine hair inside the follicle into a thin, column-like shape[1]. Everyone has them. They are most visible where the sebaceous glands are largest and the pores widest, which is why they cluster on the nose, the inner cheeks, the chin and the forehead.
What do sebaceous filaments look like?
On the skin, sebaceous filaments look like small, evenly spaced dots, usually light grey, beige or pale yellow, sitting flat with the surface. The pore is filled to the top, so they can make the pores themselves look bigger than they are. If you squeeze one, a thin white or yellow thread of waxy material comes out, which is why people sometimes describe them as “little worms”. This is simply sebum taking the shape of the pore.
Sebaceous filaments on the nose: why nose pores look so obvious
The nose has some of the largest and most active sebaceous glands on the body, and the pores there are naturally wider. More oil, wider openings and a curved surface that catches the light all make filaments on the nose stand out. Large pores on the nose and sebaceous filaments on the nose are, in practice, usually the same concern seen from two angles. The same filaments appear, less obviously, as sebaceous filaments on the cheeks and chin, and large pores on the cheeks are often more about loss of firmness than oil.
Sebaceous Filaments vs Blackheads: How to Tell the Difference
Sebaceous filaments and blackheads both live in the pore, which is why they are so easily confused. The difference is what fills the pore and what that material does when it meets the air.
So what are blackheads? A blackhead, or open comedone, is a mild form of acne. Dead skin cells build up and stick together inside the pore, forming a firm plug that stretches the opening. The top of the plug is exposed to the air, where the oil and pigment in it oxidise and turn dark. A sebaceous filament is not a plug: oil continues to flow through it to the surface.
| Sebaceous filament | Blackhead | |
|---|---|---|
| What it is | Normal lining of the pore | A type of acne (open comedone) |
| Colour | Light grey, beige or pale yellow | Dark brown or black |
| Feel | Flat with the skin | Often slightly raised and firm |
| Pattern | Evenly spread, many at once | Scattered, fewer in number |
| When squeezed | Thin, soft, pale thread; refills within weeks | Firm plug with a dark tip |
| Can it be cleared? | Made less visible, not removed for good | Yes, with acne treatment |
What is the white stuff that comes out of a pore?
When you press the skin around the nose and a soft white or yellow thread appears, that is almost always a sebaceous filament: sebum mixed with skin cells. A hard, white, pearl-like ball that sits just under the skin and will not squeeze out is more likely to be a milium, a tiny keratin cyst, which needs professional milia removal rather than pressure.
How to get rid of blackheads on your nose
Blackheads on the nose respond to the same approach as filaments, with one difference: a blackhead is a true plug, so it can be cleared. The most effective steps are:
- A salicylic acid (BHA) product most days, to loosen the plug from inside the pore.
- A retinoid a few nights a week, to stop new plugs forming.
- No squeezing with nails or tools, which pushes material deeper and causes marks and broken veins.
- Professional extraction or a medical peel if blackheads are stubborn, and treatment for acne if they come with spots. Our laser acne treatment reduces oil production as well as clearing blockages.
Why Are My Pores So Big? What Causes Large Pores on Your Face
Pore size is partly set by your genes, but it is not fixed. A 2016 review in Dermatologic Surgery ↗ identified three main causes of enlarged pores on the face, also called open pores or dilated pores: high sebum output, reduced elasticity of the skin around the pore, and an increase in the volume of the hair follicle. It also noted that recurrent acne, sex hormones and skincare habits play a part[2].
Oil is the strongest single factor. In a study of 60 adults published in the British Journal of Dermatology ↗, pore size was measured under magnification alongside oil output. Larger pores were linked to higher sebum levels, older age and male sex, with sebum showing the strongest link. In women, pores were also measurably larger around ovulation, which suggests that hormonal swings affect how large they look through the month[3].
In summary, what causes enlarged pores and large pores on the face comes down to:
- Oily skin. More sebum moving through the pore stretches the opening and fills it, and clogged pores stretch further, so the pore and its filament are more visible.
- Age and sun damage. Collagen and elastic fibres around each pore act like a supporting ring. As they weaken with age and ultraviolet exposure, the pore loses its shape and sags open, often looking more oval than round.
- Genetics and sex. Pore size runs in families, and men tend to have larger pores than women.
- Acne. Repeated blackheads and spots stretch pores, and inflamed spots can leave small rolling or ice-pick scars that look like enlarged pores.
- Thicker hair. A larger hair follicle has a larger opening.
Do pores get bigger with age?
Yes, they usually look larger with age, even though oil production tends to fall. The reason is loss of support rather than more oil: as collagen and elastin around the pore thin out, the opening stretches and the skin texture becomes more uneven. This is why treatments that rebuild collagen tend to help older skin more than oil-control products do.
How to Get Rid of Sebaceous Filaments and Remove Them Safely
You cannot get rid of sebaceous filaments permanently, and you would not want to: they are how your skin delivers its oil. What you can do is reduce sebaceous filaments: keep them shallow, lighter in colour and less noticeable, and reduce the size of the pores they sit in. Sebaceous filaments removal, whether by squeezing, strips or a facialist’s extraction, only empties them for a few weeks, so the best sebaceous filaments treatment is one that stops them refilling as fast. These are the approaches with the best evidence for how to remove sebaceous filaments and keep them down.
Salicylic acid for sebaceous filaments and pores
Salicylic acid is a beta hydroxy acid that dissolves in oil, so it can get inside the pore and loosen the mixture of sebum and dead cells that makes up a filament. A leave-on BHA product used a few times a week, building up to daily if your skin tolerates it, is the most practical first step for how to get rid of sebaceous filaments on the nose, and salicylic acid for pores works the same way across the forehead and chin.
Retinol and retinoids for pores
Retinoids speed up the turnover of the cells lining the pore, so less material builds up, and over months they encourage the skin to make new collagen. A 2016 review of treatments for enlarged facial pores described topical retinoids as a first-line option alongside chemical peels, antiandrogen tablets for some women, and lasers[4]. In a large trial, 568 adults with sun-damaged skin used the prescription retinoid tazarotene or a placebo cream once a day for 24 weeks; the retinoid improved apparent pore size along with fine lines and pigmentation[5]. A published case also reports striking sebaceous filaments on the face clearing with topical tretinoin[1]. Over-the-counter retinol is gentler and slower. Start two or three nights a week, and avoid retinoids if you are pregnant or trying to conceive.
Niacinamide for pores
Niacinamide (vitamin B3) can reduce how much oil sits on the skin. In a placebo-controlled study, 2% niacinamide lowered the rate of sebum production in Japanese volunteers after two and four weeks, and reduced the amount of oil sitting on the skin in a separate group of white volunteers after six weeks[6]. The effect is modest, but it pairs well with a BHA or retinoid.
Oil cleansers and clay masks for sebaceous filaments
Washing twice a day with a gentle, non-comedogenic cleanser removes surface oil. Many people find an oil cleanser for sebaceous filaments loosens them on the nose, because oil dissolves oil. Kaolin or bentonite clay masks absorb surface sebum and can make pores look tighter for a day or two. None of these change pore size, but they help filaments look less obvious between other treatments.
Sun protection
Daily broad-spectrum sunscreen protects the collagen around each pore. Ultraviolet damage is one of the main reasons pores widen with age, so SPF is a long-term pore treatment, even if you will not see a change in the mirror for years.
How long do sebaceous filaments take to come back?
Usually within a few weeks of being emptied, because the gland keeps producing oil. This is the main reason home extraction and pore strips feel like a constant job.
Squeezing Sebaceous Filaments: Do Pore Strips Work?
It is tempting, but squeezing or popping sebaceous filaments, even large sebaceous filaments, brings only short-term satisfaction. The pore refills, and repeated pressure can stretch the opening, break small blood vessels, push bacteria deeper and, over time, leave marks or scarring. Squeezing with nails or metal extractors on the nose is a common cause of broken veins and inflamed spots.
Pore strips pull the top of the filaments out and can make the nose look smoother for a few days, but they also pull at the skin surface and do nothing to stop the pores filling again. Used occasionally on healthy skin they are unlikely to cause harm, but they are not a treatment for large pores. If you want filaments removed, a professional extraction as part of a facial is gentler than doing it yourself, and it should be combined with a routine that stops them building up again.
How to Shrink Pores on Your Face, and Can You Close Them?
The most searched pore questions, how to shrink pores on your face, how to reduce pores on the face, how to minimise pores and how to close pores on the face, all come with a common myth: that pores open with heat and close with cold. Pores have no muscles to open or close. Steam softens the sebum inside them, which can make extraction easier, and ice or cold water briefly tightens the surface and reduces redness, but neither changes the size of the opening for more than a few minutes.
What does change how large pores look is learning how to unclog pores, by reducing the oil and debris that fill and stretch them, and strengthening the collagen support around them. That is the real answer to how to get rid of pores looking large. In practice, how to get rid of large pores, or at least make them far less visible, means:
- a daily routine of gentle cleansing, a BHA or retinoid, niacinamide if you are oily, and SPF
- non-comedogenic moisturiser and make-up, so pores are not clogged further
- treating active acne early, before it stretches pores or leaves scars
- clinic treatments that rebuild collagen, when skincare alone has reached its limit
Expect skincare to take eight to twelve weeks to show a difference. Pores can be made noticeably smaller in appearance, but no treatment closes them altogether, and nothing will shrink pores permanently without upkeep, because oil production and ageing carry on.
Large Pores Treatment: The Best Clinic Treatments for Enlarged Pores
When large pores or sebaceous filaments still bother you after a consistent routine, the best treatment for large pores, open pores treatment and sebaceous filaments treatment all work at a deeper level, either reducing oil production or rebuilding the collagen that holds pores in shape. The evidence for most of them comes from small studies, so results vary and a course of treatment is usually needed.
Laser treatment for large pores
Laser treatment for large pores, including large pores on the nose, can reduce both pore size and oil production. In a split-face study of 40 adults, five sessions of a 1064 nm Nd:YAG laser, three weeks apart, reduced pore size and sebum levels on the treated side compared with the untreated side[7]. The Fotona 4D laser combines Nd:YAG with an erbium laser and is used for skin texture as well as tightening, while erbium laser resurfacing removes a fine layer of skin to smooth texture and scarring, with more recovery. Our comparison of Fotona 4D and Morpheus8 explains how the two differ.
Newer lasers aimed directly at the sebaceous glands are being studied: a 2026 case report described visible improvement of sebaceous filaments on the nose after a 1726 nm laser, which heats sebum selectively[8]. It is a single case, so this is one to watch rather than a proven treatment.
Microneedling for large pores (Morpheus8)
RF microneedling places fine insulated needles into the skin and releases radiofrequency heat at the tips, which tightens the dermis and stimulates new collagen around the pores. In a 2024 study of 22 patients with enlarged pores on the cheeks ↗, three sessions of fractional microneedling radiofrequency lowered the average score on a six-point pore scale from 3.55 to 2.59, as rated by two independent dermatologists, with an average pain score of about 6 out of 10[9]. At Centre for Surgery this is Morpheus8, usually as a course of three sessions, and it also improves acne scarring, which often sits alongside enlarged pores. Our guide to radiofrequency skin tightening explains how RF works in more detail.
Microtox (micro-dose anti-wrinkle injections)
Microtox uses tiny doses of botulinum toxin injected into the skin rather than the muscle, where it reduces the activity of the oil glands and can make the skin look smoother and less shiny. A 2024 systematic review in Plastic and Reconstructive Surgery Global Open found improvements in sebum production, pore size, skin texture and redness across ten small studies, but none of the analyses had enough participants to be conclusive[10]. A 2026 critical review rated the evidence specifically for enlarged pores as low to very low[11]. It tends to suit people whose main problem is oiliness, and the effect lasts a few months. Our guide to microtox covers what to expect.
Chemical peels and prescription retinoids
Medical-grade peels, such as salicylic acid peels for oily skin or deeper TCA peels for texture, exfoliate the lining of the pores and, with repeated treatment, encourage new collagen. They are often combined with a prescription retinoid at home.
Skin boosters and polynucleotides
Injectable treatments such as skin boosters and polynucleotides aim to improve hydration and skin quality. In a 2024 survey of 407 cosmetic doctors in Korea, most of those who used polynucleotides for enlarged pores rated them effective, often combined with RF microneedling or microtox[12]. That reflects clinical experience rather than trial data, so these are best seen as supporting treatments.
Which treatment suits which cause?
| Main cause of large pores | Treatments most likely to help |
|---|---|
| Oily skin, prominent filaments | BHA, niacinamide, retinoid; microtox; Nd:YAG laser |
| Ageing, sun damage, loss of firmness | Retinoid and SPF; Morpheus8; Fotona 4D; skin boosters |
| Acne and acne scarring | Acne treatment first; then Morpheus8, laser resurfacing or peels |
| A mix of the above | A combined plan, set out at consultation |
When Large Pores Are Something Else
Not every dot or dip on the face is a pore or a filament. A few conditions are often mistaken for them and need a different approach:
- Sebaceous hyperplasia. Soft, yellowish, slightly raised bumps, often with a central dip, caused by overgrown oil glands. They are common from middle age and are treated with sebaceous hyperplasia removal rather than pore treatments.
- Acne scars. Small ice-pick or rolling scars can look like large pores. Our guide on how to get rid of acne scars and our acne scar removal page explain the options.
- Active acne. If blackheads come with spots and inflammation, treating the acne comes first. See our guide to the most effective treatments for acne.
- Milia. Hard, white, pinhead cysts that do not squeeze out.
- A single very large pore. One wide pore with a blackhead-like plug, usually on the face or upper body, may be a dilated pore of Winer, a benign growth of the hair follicle that is removed with a minor procedure rather than skincare.
If a spot is changing, bleeding, crusting or not healing, see your GP or a doctor rather than treating it as a pore. Our skin lesion removal service includes assessment and, where needed, laboratory testing.
Sebaceous Filaments and Large Pores FAQs
Can you get rid of sebaceous filaments permanently?
No. They are a normal part of every pore and refill as long as your oil glands are working. Treatments that reduce oil production or tighten the pore can make them much less visible for as long as you keep them up.
Is it okay to pluck out sebaceous filaments?
It is not dangerous once in a while on healthy skin, but it does not help. They refill within weeks, and regular squeezing or picking stretches pores and can cause broken veins, infection and marks.
How do Koreans get rid of sebaceous filaments?
Popular Korean routines use the same principles described above: oil cleansing followed by a gentle foam cleanser, a BHA or AHA toner, niacinamide and daily sunscreen. In clinics, RF microneedling, lasers, microtox and polynucleotides are widely used for pores, and much of the published pore research comes from Korea.
Does ice water shrink pores?
Only for a few minutes. Cold briefly tightens the skin surface and calms redness, which can make pores look smaller, but it does not change their size.
Does vitamin C help pores?
Vitamin C is an antioxidant that supports collagen and protects against sun damage, so it may help in the long term as part of a routine with sunscreen. It has much less direct effect on oil and filaments than a BHA, retinoid or niacinamide.
What causes an enlarged pore that looks like a hole?
Usually loss of collagen support around the pore with age and sun damage, which lets it stretch into an oval or slit shape, or a small acne scar. A single, unusually large pore with a dark plug can be a dilated pore of Winer.
Are large pores more common in men?
Yes. Men tend to have higher sebum output and thicker facial hair, and studies of pore size consistently find larger pores in men than in women[3].
Do sebaceous filaments mean my skin is dirty?
No. They are not dirt, and scrubbing harder will not remove them. Harsh scrubs and drying products can irritate the skin and make it look oilier.
Treatment for Large Pores in London
If sebaceous filaments or large pores are still bothering you after a few months of good skincare, a consultation will establish what is driving them, whether that is oil, ageing skin, acne or a combination, and which treatment, if any, is likely to help. Prices for skin treatments are on our Skin & Aesthetics price list.
Phone: 020 7993 4849 | Address: 95–97 Baker Street, Marylebone, London W1U 6RN
Contact us to schedule a consultation
References
- Mineroff JP, Hyde JT, Hsu S. A case report of sebaceous filaments. Cureus 2023;15(11):e48656. doi:10.7759/cureus.48656
- Lee SJ, Seok J, Jeong SY, et al. Facial pores: definition, causes, and treatment options. Dermatologic Surgery 2016;42(3):277–285. doi:10.1097/DSS.0000000000000657
- Roh M, Han M, Kim D, Chung K. Sebum output as a factor contributing to the size of facial pores. British Journal of Dermatology 2006;155(5):890–894. doi:10.1111/j.1365-2133.2006.07465.x
- Dong J, Lanoue J, Goldenberg G. Enlarged facial pores: an update on treatments. Cutis 2016;98(1):33–36. PMID: 27529707
- Kang S, Krueger GG, Tanghetti EA, et al. A multicenter, randomized, double-blind trial of tazarotene 0.1% cream in the treatment of photodamage. Journal of the American Academy of Dermatology 2005;52(2):268–274. doi:10.1016/j.jaad.2004.06.021
- Draelos ZD, Matsubara A, Smiles K. The effect of 2% niacinamide on facial sebum production. Journal of Cosmetic and Laser Therapy 2006;8(2):96–101. doi:10.1080/14764170600717704
- Roh MR, Chung HJ, Chung KY. Effects of various parameters of the 1064 nm Nd:YAG laser for the treatment of enlarged facial pores. Journal of Dermatological Treatment 2009;20(4):223–228. doi:10.1080/09546630802647244
- Almufadhi A, Alosaimi M. Sebaceous filaments of the nose treated with a 1726-nm diode laser: a case report and description of the “Lunar crater sign”. JAAD Case Reports 2026;69:85–87. doi:10.1016/j.jdcr.2026.01.001
- Huang Y, Zheng H, Wu Q, Zhang M. Efficacy and safety of fractional micro-needling radiofrequency for the treatment of enlarged pores on the cheeks of a Chinese cohort: a retrospective study. Lasers in Medical Science 2024;39(1):100. doi:10.1007/s10103-024-04043-w
- Rahman E, Rao P, Philipp-Dormston W, et al. Intradermal botulinum toxin A on skin quality and facial rejuvenation: a systematic review and meta-analysis. Plastic and Reconstructive Surgery Global Open 2024;12(8):e6084. doi:10.1097/GOX.0000000000006084
- Liao X, Wu J, Cheng H, et al. Exploring the therapeutic potential of botulinum toxin in treating post-acne sequelae: a critical review. Clinical, Cosmetic and Investigational Dermatology 2026;19:628704. doi:10.2147/CCID.S628704
- Lee D, Choi H, Yoo K, et al. Assessment of current practices and perceived effectiveness of injectable polynucleotide for enlarged facial pores among cosmetic physicians: a survey-based evaluation. Skin Research and Technology 2024;30(9):e13738. doi:10.1111/srt.13738
