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Microneedling for Large Pores: What Changes, What Cannot

Microneedling does not shrink a pore. A pore is an opening with no muscle to close it. What changes, what cannot, and the cited evidence behind each claim.

Microneedling does not shrink a pore. A pore is an opening, not a valve. No muscle closes it. What can change is how visible that opening looks. Pore appearance tracks three things: sebum output, elasticity around the opening, and hair follicle volume. Microneedling addresses one of the three.

That is the whole honest answer. The rest of this page explains where each factor comes from. It also names where our own claims stop.

What makes a pore look large?

Three clinical causes drive enlarged facial pores. High sebum excretion. Decreased elasticity around the pore. Increased hair follicle volume. That is the conclusion of a review by Lee and colleagues in Dermatologic Surgery, 2016. The authors call enlarged pores a cosmetic concern, not a medical one.

Sebum carries the most weight. Roh and colleagues at Yonsei University measured 60 volunteers, 30 male and 30 female. They used a dermoscopic camera and a Sebumeter. Pore size correlated most with sebum output level. Male sex came next, then age (British Journal of Dermatology, 2006).

Two findings from that same study are worth keeping. Pore size increased significantly during the ovulation phase, at P = 0.008. Acne severity was not significantly associated with pore size. Your pores and your breakouts are separate problems with separate drivers.

The third factor is time. A study of 1,204 Indian women aged 18 to 84 tracked skin ageing across four cities. It recorded increased pore size and loss of elasticity. Sebum production dropped after menopause (International Journal of Cosmetic Science, 2018). Pores widen as the wall around them loosens.

Can you close or shrink your pores?

You cannot close a pore. A pore is the surface opening of a pilosebaceous unit. It has no sphincter and no shutter. The only muscle attached to the structure is the arrector pili. Its job runs the other way. It compresses the sebaceous gland and helps push sebum out (StatPearls, Anatomy, Skin (Integument)).

The American Academy of Dermatology frames the goal as making pores less noticeable. Never as shrinking them. Its guidance is worth reading in full at What can treat large facial pores?.

Two of the AAD's points cut against habits people already have. Hot water can irritate skin and make pores look larger, so it recommends warm. Scrubbing, picking and squeezing cause inflammation, and inflamed skin shows its pores more.

So the honest target is appearance. That is not a downgrade. Appearance is the thing you actually see in the mirror. It just means the mechanism differs from the one marketing usually implies. We cover the non-device side in how to minimize pores.

What does microneedling actually change?

Microneedling is described in the dermatology literature as percutaneous collagen induction. Fine needles puncture the skin in a controlled pattern. Singh and Yadav trace the technique and its instruments in Indian Dermatology Online Journal, 2016.

Of the three causes of visible pores, this touches elasticity around the opening. It does not lower sebum output. It does not reduce hair follicle volume. Anyone telling you a needle changes those two is selling past the evidence.

The second thing microneedling changes is temporary. It opens microchannels through the outer layer of skin. That layer normally keeps topical actives out. It is the stratum corneum. It runs 20 to 30 cell layers deep (StatPearls). We break it down in what the stratum corneum is.

Those channels do not stay open. In a hairless rat model, barrier function recovered within 3 to 4 hours. Unoccluded microchannels closed within 15 hours (Kalluri and Banga, Pharmaceutical Research, 2011). Human impedance measurements gave a longer figure. Across 35 subjects, mean closure ran 58.29 to 63.09 hours by body site (Ogunjimi et al., 2021).

Those numbers differ because the models and the measurement methods differ. Both agree on the principle. The road is temporary, so what you apply in that window matters. More on that in transdermal delivery explained.

Microneedling vs other pore approaches

Here is how the common options map onto the three causes. Note how few of them touch more than one.

Approach Cause it targets What the source says Cadence
Non-comedogenic products Clogging AAD: clogged pores expand and look more noticeable Every product, daily
Cleansing twice daily, warm water Sebum, clogging AAD: unclogs pores and reduces oiliness Twice daily
Topical niacinamide Sebum output 2% lowered sebum excretion rate in a Japanese cohort Daily
Topical retinol Firmness, clogging AAD lists it for oily skin, mild acne, less firm skin Nightly, not in pregnancy
Broad-spectrum SPF 30 or higher Elasticity AAD: sun-damaged skin has less firmness Daily
Home microneedling Elasticity, plus a delivery route Percutaneous collagen induction, per Singh and Yadav About once a week
Scrubbing, picking, squeezing None AAD: irritation makes pores look larger Avoid
In-office lasers and devices Multiple Reviewed in Cutis, 2016 Clinician only

Nothing on that list closes a pore. Every honest entry works on sebum, on clogging, or on the wall around the opening.

Does niacinamide help with large pores?

Niacinamide has real published work behind it on the sebum axis. Draelos and colleagues ran two trials of topical 2% niacinamide. In 100 Japanese subjects, the treated group showed significantly lowered sebum excretion rate at 2 and 4 weeks. In 30 Caucasian subjects, casual sebum levels fell at 6 weeks. Excretion rate did not (Journal of Cosmetic and Laser Therapy, 2006).

Read that split carefully. The response differed between the two populations. One measure moved and the other did not. This is a real ingredient with an uneven evidence base, not a solved problem.

Our 01 re:vive-B3 Pore Tightening ampoule is formulated at Niacinamide 21%, which is 210,000 ppm. That is a specification, not a promise. The Draelos work studied 2% niacinamide in a moisturizer, not our formula. A higher label figure is not evidence of a larger effect. We have not run that comparison, so we do not claim it. Ingredient background sits in our niacinamide guide.

How deep should you go for pore texture?

Start shallow. Always. The re:tones Tap Pen has a continuous depth collar, 0.5 mm to 1.5 mm, with no clicks. The shallow end is a real setting, not a rounding error. Begin at 0.5 mm on the PRO-R Nano cartridge, the 15 micron tip, which is the forgiving one.

Deeper is not better and it is not faster. Tip geometry changes recovery time. One split-face study of 16 subjects compared nanotips against straight-blade microneedles at matched lengths. Barrier function recovered within 4 to 8 hours after the nanotips. The traditional needles took 48 to 72 hours (Tao et al., 2017).

Cadence is once a week, roughly five minutes. Our full breakdown of settings sits in the microneedling depth guide. Timing is in how often to microneedle. To have the settings picked for you, run the ampoule finder.

Who should not microneedle

Singh and Yadav list the contraindications directly. Do not microneedle if any of these apply to you.

  • Active acne
  • Herpes labialis, warts, or any other local infection
  • Moderate to severe eczema or psoriasis
  • Blood dyscrasias, or anticoagulant therapy
  • Extreme keloidal tendency
  • Current chemotherapy or radiotherapy

Reported adverse effects include erythema, irritation, post-inflammatory hyperpigmentation, and aggravation of acne. Others are herpes reactivation and local infection from a non-sterile instrument. Cartridges are single use for that last reason. Use one, then bin it.

The re:tones Tap Pen is a cosmetic device. It does not diagnose, treat, cure or prevent any disease. Talk to a board-certified dermatologist about your own skin first. More detail sits in who should not microneedle and microneedling side effects.

What we do not claim

We make no promise about your pores. We have not run a clinical trial on pore area, so we publish no figure for one. We do not tell you your pores will get smaller. A pore has no mechanism for getting smaller.

What we describe is the mechanism and the spec. The needle is 8 micron on the PRO-5D Nano cartridge and 15 micron on the PRO-R Nano. Depth runs 0.5 to 1.5 mm. The ampoule releases at the moment the tip meets skin. That is what the device does. What it does for you is not ours to state.

Frequently asked questions

Does cold water close your pores?

No. A pore has no muscle that closes it, so temperature has nothing to contract. The arrector pili muscle attaches to the follicle. It compresses the sebaceous gland and helps push sebum out. The AAD recommends warm water for cleansing, since hot water irritates skin and makes pores look larger.

Do men have larger pores than women?

On average, yes. In the Yonsei study of 60 volunteers, male sex was the second strongest correlate. Sebum output level ranked first. Men also showed a tighter sebum to pore relationship, r = 0.47 against r = 0.38 in women. The authors concluded that other factors influence female pore size.

Does your menstrual cycle change pore size?

The same study found pore size significantly increased during the ovulation phase, at P = 0.008. That is one measured cohort of 30 women, not a universal rule. It does suggest that comparing your skin week to week can mislead you. Judge a routine over months, not over one photo.

Do pores get bigger with age?

Pore size increases with age in measured cohorts. Age was a significant factor in the Yonsei regression. The study of 1,204 Indian women recorded larger pores alongside lost elasticity. The wall around the opening loosens, so the opening reads wider. Sebum output can fall over the same period.

How long do microneedling channels stay open?

Not long, and the figure depends on the method. Unoccluded rat skin closed its microchannels within 15 hours, with barrier function back in 3 to 4. Human impedance across 35 subjects put mean closure between 58 and 63 hours. Treat the window as short and apply your ampoule immediately.

Is nano-needling different from microneedling for pores?

Tip geometry differs, and so does recovery. In a split-face study of 16 subjects, nanotips regained barrier function in 4 to 8 hours. Matched-length traditional microneedles took 48 to 72. Neither approach removes sebum or shrinks a follicle. Both work on the wall around the opening and on delivery.

Will treating acne fix my large pores?

Not directly. Acne severity was not significantly associated with pore size in the Yonsei measurements. Clogging is a separate matter, and the AAD notes that clogged pores expand and read as more noticeable. Treat both, but do not expect one to solve the other. See how to get rid of blackheads.

Can pore strips or scrubs make pores smaller?

No. A strip lifts surface debris from an opening that stays the same size underneath. The AAD is explicit that scrubbing, picking and squeezing irritate skin, and inflamed skin shows its pores more. Gentle handling is the recommendation. Texture questions beyond pores sit in uneven skin texture.

Sources

Last updated: August 19, 2026

This article is general information about skin, not medical advice. The re:tones Tap Pen is a cosmetic device and does not diagnose, treat, cure or prevent any disease. Speak with a board-certified dermatologist about your own skin.

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