Pores: Why They Enlarge, and How Lasers Reduce Them

What Pores Actually Are

Pores are the surface openings of hair follicles and sebaceous glands — a fixed anatomical feature. What changes is their apparent size, determined by sebum production, the diameter and elasticity of the follicle wall, the quality of surrounding skin, and the presence of oxidised sebum.

Pores cannot be permanently 'closed' by cold water or astringent toners. Genuine reduction requires addressing the structural factors that cause them to appear large.

Why Pores Enlarge

Excess sebum fills the follicular canal and stretches the pore wall. If it oxidises before exiting the pore, it forms a blackhead that physically dilates the opening.

Loss of skin elasticity — driven by collagen degradation from UV exposure and ageing — means the tissue surrounding each pore loses its ability to rebound after stretching. Chronic UV exposure directly damages collagen fibres, accelerating this process.

How Laser Treatment Reduces Pore Appearance

The FSX Laser LCLR protocol and non-ablative laser platforms at IN Eternity address pore appearance through thermal collagen contraction and new collagen stimulation.

Thermal energy causes controlled contraction of surrounding collagen — physically tightening the tissue around each pore. This effect is visible immediately. Over 4–8 weeks, new collagen synthesis continues, progressively improving skin density and elasticity.

Supporting Results at Home

Niacinamide (5–10%) is the most evidence-supported topical agent for reducing sebum production and improving pore appearance. Retinoids accelerate skin cell turnover and prevent sebum oxidation.

Consistent SPF 50+ sunscreen use is essential — UV exposure is one of the primary drivers of the collagen degradation that makes pores appear enlarged. At consultation, Dr. Sin Yong will design a combined treatment and homecare approach.

The Sebum–Pore–UV Cycle: Breaking It With Laser

Enlarged pores and excess sebum production exist in a self-reinforcing cycle. Excess sebum production stretches the follicular opening; UV exposure degrades the collagen surrounding the pore, reducing its rebound capacity; and oxidised sebum (blackheads) physically dilates the pore further by sitting inside the canal like a plug. Breaking one part of this cycle creates improvement across the whole.

Laser treatment addresses two parts of the cycle simultaneously: thermal energy contracts the collagen surrounding each pore (improving rebound capacity) and stimulates new collagen synthesis (improving long-term tissue support). This is why laser-treated skin typically shows improvement in both pore size and overall skin quality — the mechanisms that improve pore appearance also improve the broader structural properties of the skin.

Managing Sebum: What Topicals Actually Do

Several topical agents have meaningful evidence for reducing sebum production and improving pore appearance. Niacinamide (5–10%) is the most consistently effective — it reduces sebum production via inhibition of lipid synthesis in sebocytes, and has anti-inflammatory properties that reduce the redness often associated with large pores in oilier skin types. Retinoids reduce sebum production by their action on retinoid receptors in sebaceous glands, while simultaneously accelerating cell turnover to prevent the accumulation of dead cells at the pore opening.

The combination of regular laser treatment and evidence-based topical management typically produces more durable improvement than either approach alone. At IN Eternity, Dr. Sin Yong designs an integrated treatment-plus-homecare plan that supports and extends the results of each laser session.

Pores cannot be closed permanently — but the tissue supporting them can be significantly improved, and that improvement is visible and lasting.