Quick answer: Pores can look more prominent due to a combination of sebum production, clogging inside the pore, follicle size, and reduced elasticity in surrounding skin. Since pores don’t open and close like a door, a more realistic goal than “permanent shrinking” is making them look less noticeable by reducing clogging and irritation and protecting elasticity from UV exposure.
The same person’s pores can look different by the afternoon when skin is shiny, right after cleansing when skin is flushed, or when dryness makes texture rougher. Lighting and makeup play a role too. So instead of fixating on size in the mirror and reaching for stronger astringents and scrubs, it helps to separate out the different causes.
Three common reasons pores look larger
A 2016 literature review identified high sebum production, reduced elasticity around pores, and larger follicle volume as the main clinical factors behind visibly enlarged facial pores. It also noted that recurring acne, sex hormones, and skincare habits can play a role, and that a cause-specific approach is needed.
In a 2006 study of 60 healthy adults (30 men, 30 women), pore size was linked with sebum output, sex, and age. Women’s pores were significantly larger around ovulation (p=0.008), and acne severity wasn’t related to pore size — one reason pores can look bigger on some days, even without breakouts.
A 2013 study of Korean adults also observed a correlation — higher sebum output and lower skin elasticity tracked with larger pore measurements. That said, both are small correlational studies, so they shouldn’t be read as saying one single cause determines everyone’s pore size.
1. Sebum and clogging inside pores
Excess sebum or a buildup of comedones can make a pore opening look more prominent. Since not every small dot on the nose is a blackhead, tell sebaceous filaments and comedones apart, and avoid repeated extraction and harsh scrubbing.
2. Reduced elasticity around the pore
As skin loses firmness over time and with UV exposure, the outline of a pore can become more visible. Sun protection won’t change how pores look overnight, but it’s a basic step for reducing additional photodamage and elasticity loss.
3. Irritation and rough skin texture
Hot water, over-cleansing, and harsh scrubs that leave skin red and rough can make pores stand out more because of shadowing and surface unevenness. Ironically, scrubbing daily because you’re worried about pores can make the visual concern worse.
What you can do about pores at home
Cleanse gently
Use lukewarm water and your fingertips, no more than twice a day. Washing repeatedly to get rid of afternoon shine, or scrubbing just the nose, can end up irritating skin.
Start clog-management ingredients one at a time
Salicylic acid can be used to help manage clogged pores, but don’t start it alongside several other acids, pads, and retinol at once. If it’s drying or stinging, adjust frequency and add moisturizer. If you’re pregnant or breastfeeding, talk to a healthcare provider before using a retinoid.
Check for non-comedogenic labeling
If your skin clogs easily, labels like non-comedogenic, oil-free, and won't clog pores on moisturizer, sunscreen, and makeup can be a useful reference point. No product can guarantee that nobody will get a comedone.
Protect skin from UV exposure every day
Use a broad-spectrum sunscreen with SPF 30 or higher, and reapply outdoors. This isn’t a quick fix for how pores look — it’s long-term care that reduces the cumulative UV damage that can affect elasticity.
How to read pore claims on product labels
- Smoother-looking texture: a cosmetic-level description of skin’s surface temporarily looking smoother
- Managing oil and clogging: check the specific ingredients involved and how the product is meant to be used
- Elasticity care: distinguish whether a claim is backed by finished-product clinical testing or only ingredient-level research
- Pores look less noticeable: a clear description that this is a change in appearance driven by lighting, oil, and texture
SKIN9HARI doesn’t use language that claims to change the size or shape of pores.
If you’re managing pores with SKIN9HARI products
- A.C Cleanser: A rinse-off product formulated with 0.5% salicylic acid and AHA/PHA, low-irritation tested (24-hour patch test, 30 participants). It isn’t positioned as a pore-size product — adjust frequency so it doesn’t sting when layered with other exfoliating steps.
- N.F Toner: Contains 0.02% salicylic acid, and the finished product went through a non-comedogenic human study (4 weeks, 12 occluded patch applications, 21 participants completed). The accurate description is “tested suitable for acne-prone skin” — that shouldn’t be recast as a study about pore size.
- N.F Cream: A fragrance-free moisturizing product formulated with 4 ceramides, 5 types of hyaluronic acid, and plant-derived squalane, low-irritation tested (24-hour patch test, 30 participants). It isn’t described as reducing pores — it’s positioned as a moisturizing step that eases dryness and irritation after cleansing.
FAQ
Does cold water close pores?
Pores don’t open and close like a door in response to temperature. Water that’s too hot or too cold can be irritating, so use lukewarm water.
If I remove all the oil, will my pores get smaller?
Less oil and clogging can make pores look less noticeable, but sebum is a normal part of skin. Removing too much of it can lead to dryness and irritation.
Can I use a pore mask every day?
Peel-off products or strong masks used daily can cause irritation. Keep the difference between an immediate smoothing effect and long-term pore appearance in mind.
Can dry skin have visible pores too?
Yes. Dry, rough texture doesn’t reflect light evenly, which can make pore shadows more visible. Moisturizing helps keep skin texture comfortable.
How long should I use a pore-focused product before judging results?
Don’t judge based on an immediate tightening feeling alone — check the product’s suggested usage period and how your skin actually responds. If irritation continues, stop rather than pushing through to “finish” a routine.
Why do my pores suddenly look bigger?
More oil, skin that’s red or rough from irritation, and harsh lighting can all make pores look bigger on a given day. In a 60-person study, women’s pores were significantly larger around ovulation. If painful breakouts are increasing at the same time, see a dermatologist.
Can enlarged pores go back to how they were?
When clogging, shine, and rough texture settle down, pores can look less noticeable, but there isn’t solid evidence that a stretched pore returns to its original size. If pore size itself is the concern, a dermatologist can go over options and risks.
What ingredients are good for pores?
Salicylic acid is an ingredient that can be used to help manage clogged pores. Don’t start several acids, pads, and retinol all at once — begin with one. If skin gets dry or stings, cut back on frequency and add moisture.
How should I care for visible pores on my nose?
Not every dot on the nose is a blackhead, so start by telling sebaceous filaments apart from comedones. Scrubbing only your nose or squeezing repeatedly can irritate skin, so skip that and cleanse with lukewarm water and your fingertips no more than twice a day.
Do I need an in-office dermatology treatment?
Options vary depending on the cause and your skin condition. If at-home care isn’t enough for your concern, a dermatologist can walk you through diagnosis and the benefits and risks of in-office treatments.
The bottom line
Pores aren’t something to eliminate or close — they’re a skin structure where sebum, clogging, texture, and elasticity are separate factors that call for separate care, aimed at making them look less noticeable.
Sources
- Lee SJ, et al. Facial Pores: Definition, Causes, and Treatment Options. Dermatol Surg. 2016.
- Kim BY, et al. Sebum, acne, skin elasticity, and gender difference — which is the major influencing factor for facial pores?. Skin Res Technol. 2013.
- American Academy of Dermatology. What can treat large facial pores?.
- Roh M, et al. Sebum output as a factor contributing to the size of facial pores. Br J Dermatol. 2006.
This guide provides general skincare information and does not diagnose or replace treatment for any condition.