Pore size is largely genetic and cannot be permanently shrunk — but the appearance of pores can be improved substantially. Most enlarged-looking pores are stretched by trapped sebum and dead skin, and clearing that congestion makes a visible difference. Pores do not open and close with temperature.
What Pores Actually Are
A pore is the surface opening of a hair follicle with its associated sebaceous gland. Its baseline diameter is set by genetics and influenced by sebum production, which is hormonally driven. Oilier skin types genuinely have larger pore openings — this is structural, not a hygiene failure, and no amount of cleansing changes the underlying anatomy.
The Temperature Myth
Pores have no muscles and cannot open or close. Steam softens the sebum and keratin plug inside, making extraction easier, and cold can cause slight temporary tissue contraction that marginally reduces visibility. Neither is 'opening' or 'closing' a pore. Understanding this matters because it explains why hot-then-cold routines produce so little lasting change.
Blackheads vs Sebaceous Filaments
This distinction saves a lot of futile squeezing. Blackheads are genuine blockages — sebum and dead skin oxidised dark at the surface, raised and irregularly distributed. Sebaceous filaments are the normal lining of the pore, appearing as uniform grey-tan dots particularly on the nose. They are supposed to be there, they refill within days of extraction, and trying to eliminate them permanently damages the skin.
What Genuinely Refines Pores
Consistent chemical exfoliation with salicylic acid, which is oil-soluble and works inside the pore, reduces congestion over weeks. Retinoids improve follicular keratinisation and skin thickness around the pore. Professional extraction clears established plugs without the trauma of squeezing. And collagen-supporting treatments improve the skin's structural support around each opening, which softens their appearance.
What to Avoid
Squeezing at home ruptures follicle walls and causes inflammation, post-inflammatory marks and sometimes permanent scarring. Pore strips remove the top of superficial plugs and sebaceous filaments but do nothing about deeper congestion, and repeated use irritates the skin. Harsh scrubs and over-cleansing strip the barrier, often triggering more oil production.
If this describes what you are dealing with, our HydraFacial Syndeo protocol is the relevant option to discuss — our Aesthetic Specialist will confirm whether it suits you, or tell you honestly if it does not.
Frequently Asked Questions
No — pore size is genetically determined and cannot be permanently changed. What can be improved substantially is their appearance, by clearing the trapped sebum that stretches them and supporting the collagen around each opening.
A deep-cleansing facial with professional extraction clears established plugs without the trauma of squeezing. Our HydraFacial Syndeo uses vacuum-based extraction rather than manual pressure, which clears congestion with far less inflammation and no downtime.
They remove the surface portion of plugs and normal sebaceous filaments but do not clear deeper congestion, and repeated use irritates and can damage the skin barrier. They give a satisfying immediate result with little lasting benefit.