Can you permanently shrink pores?

No — pores cannot be permanently reduced in size. They are not like doors that can be opened or closed, and they cannot be made permanently smaller with skincare. Pore size is primarily determined by genetics and skin type. What skincare can do is improve pore appearance temporarily by keeping them clear of congestion (which makes them look larger), improving skin texture around them, and using ingredients like niacinamide that may reduce their visible appearance over time. Skincare manages pore appearance — it cannot change the size of the pore structure itself.

Do pores open and close with hot and cold water?

No — pores do not have muscles and cannot physically open or close. The idea that hot water 'opens' pores and cold water 'closes' them is a persistent myth. Hot water can soften the sebum plugs inside pores, making it easier to remove them, which is why it feels beneficial. Cold water can temporarily make skin appear smoother and more toned. But neither permanently changes pore size or the actual opening of the pore.

What is the most effective ingredient for reducing pore appearance?

Niacinamide (5%) is one of the most-studied ingredients associated with a reduction in visible pore size — it is thought to work through improved sebum regulation and skin texture improvement. Salicylic acid (BHA) is oil-soluble and can penetrate into pores to dissolve the congestion that makes them appear larger. Regular double cleansing also helps keep pores from becoming congested with SPF, makeup and daily sebum. These approaches manage pore appearance — they do not change the underlying pore structure.

Why do pores look larger as you get older?

Several factors contribute. Loss of skin elasticity with age means the skin around pores is less firm, allowing them to appear more visible. Cumulative sun damage also reduces skin firmness and structure. Years of sebum production and potential congestion can stretch pores over time. Slower cell turnover allows dead cells to accumulate and make pores look more pronounced. This is why SPF is often discussed in the context of pore appearance — preventing UV-related elasticity loss helps maintain skin structure around pores.

Is double cleansing necessary for visible pores?

Double cleansing — using an oil cleanser followed by a water-based cleanser — is a well-regarded approach for keeping pores clear, particularly for those who wear SPF daily. An oil cleanser effectively dissolves SPF, sunscreen and excess sebum that a water cleanser may not fully remove on its own. When pores are clear of this buildup, they appear smaller and less prominent. For those with oily skin and visible pores, consistent double cleansing (on evenings when SPF has been worn) is a practical step.

Skin Concern Guide

Enlarged Pores

Pores cannot permanently open, close or shrink

Pore size is primarily determined by genetics and skin type. Pores do not have muscles and cannot physically open or close. Skincare can manage how pores appear — by keeping them clear, improving the texture around them, and reducing sebum — but it cannot permanently alter the size of the pore structure itself.

Visibly large pores are a common concern, particularly for those with oily or combination skin. While pore size cannot be permanently changed, a consistent Korean skincare routine focused on cleansing, gentle exfoliation and the right ingredients can meaningfully improve how pores appear.

This guide explains what actually influences visible pore size, which ingredients may help, and what to realistically expect.

General Information Only. This page provides educational skincare information and is not medical advice. If you have persistent acne, eczema, rosacea, allergies, skin irritation, pigmentation changes or any medical skin condition, please consult a qualified dermatologist or healthcare professional before changing your skincare routine. Individual results vary. Always patch test new products.

What influences visible pore size

Genetics and skin type

The primary determinant of pore size. Oily skin types tend to have larger, more visible pores — this is genetic.

Sebum and congestion

When pores are congested with sebum, dead skin cells and product buildup, they appear larger. Keeping them clear improves appearance.

Age and elasticity

Loss of skin firmness with age reduces the structure around pores, making them appear more visible.

UV damage

Cumulative sun exposure reduces skin elasticity and firmness over years, contributing to more visible pores.

Skin texture

Rough, uneven skin texture around pores makes them appear more prominent. Improved surface texture helps.

What Korean skincare can support

May improve pore appearance

Keeping pores clear of congestion with double cleansing and BHA
Improving skin texture around pores with gentle exfoliation
Sebum regulation with niacinamide (may visibly reduce pore appearance)
Preventing UV-related elasticity loss with daily SPF

Cannot promise

Permanently shrinking pores
Making pores invisible — pores are a normal part of skin
Changing genetically determined pore size
Identical results for everyone

Key ingredients and approaches

Niacinamide (5%)

One of the most studied ingredients for visible pore size — may reduce pore appearance through sebum regulation and texture improvement.

Salicylic acid (BHA)

Oil-soluble; penetrates into pores to dissolve congestion. Use 1-3x per week to keep pores clear.

Double cleansing

Oil cleanser removes the sebum and SPF that block pores; water cleanser follows up. Effective and barrier-friendly.

Gentle AHA (1-2x/week)

Improves skin texture around pores, reducing their visible prominence.

Non-comedogenic SPF

Daily SPF prevents UV damage to skin elasticity — supporting the skin structure that keeps pores looking smaller.

A pore-focused routine approach

Morning

Gentle cleanser → niacinamide toner → lightweight moisturiser → non-comedogenic SPF.

Evening (most nights)

Oil cleanser → gel cleanser → niacinamide toner → lightweight moisturiser.

2-3x per week (evening)

Replace regular toner with a BHA (salicylic acid) toner or pad after cleansing. Do not use on the same night as AHAs or retinoids.

Timeline expectations

With consistent double cleansing and BHA use, pore congestion can clear within 2–4 weeks, which often produces a visible improvement in pore appearance. Niacinamide-related improvements typically develop over 4–8 weeks of daily use. Results vary significantly based on skin type and the primary cause of enlarged-looking pores.