7 Best Korean Niacinamide Serums for Smaller Pores and Real Glow in 2026

Korean skincare brands have been formulating with niacinamide longer than most Western brands have even marketed it. In 2026, the K-beauty niacinamide game has leveled up — think higher concentrations, smarter ingredient pairings, and textures that actually layer well under sunscreen. This guide breaks down the seven best Korean niacinamide serums for pore refinement and glow, with real ingredient analysis and pricing you can act on.

ProductBest ForPriceBuy COSRX Niacinamide 15 SerumOily, acne-prone skin$14–$19Amazon → Anua Niacinamide 10% + TXA 4%Hyperpigmentation + pores$16–$22Amazon → Beauty of Joseon Glow Deep SerumDry, dull skin$10–$16Amazon → Some By Mi Yuja Niacin SerumUneven tone, dullness$14–$20Amazon → Numbuzin No.3 Skin Softening SerumSensitive, textured skin$15–$22Amazon → Skin1004 Centella Tone Brightening AmpouleRedness + brightening$16–$24Amazon → Medicube Zero Pore Serum 2.0Enlarged pores, oily T-zone$20–$28Amazon →

COSRX Niacinamide 15 Blemish & Pore Tightening Serum — High-Dose Pore Control

Best for: Oily, acne-prone skin
Key ingredients: 15% Niacinamide, Zinc PCA, Birch Sap
Price range: $14–$19 on Amazon

COSRX pushed the concentration to 15% niacinamide here — well above the 5% threshold most dermatologists cite for visible sebum regulation. Zinc PCA works alongside niacinamide to control oil production at the follicle level, while birch sap keeps the formula from feeling stripping. The result is noticeably tighter-looking pores within two to three weeks of consistent use, particularly on the nose and inner cheeks. If your T-zone gets shiny by noon even with primer, this is the serum to start with.

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Anua Niacinamide 10% + TXA 4% Serum — Dual-Action Brightening

Best for: Post-acne marks and hyperpigmentation
Key ingredients: 10% Niacinamide, 4% Tranexamic Acid, Panthenol
Price range: $16–$22 on Amazon

Anua's pairing of 10% niacinamide with 4% tranexamic acid targets melanin transfer through two distinct pathways, which is why this formula hits harder on dark spots than niacinamide alone. Tranexamic acid inhibits plasmin activity that triggers melanocyte stimulation — the same mechanism dermatologists use in melasma treatments. The panthenol base keeps irritation low even at these active concentrations. Best suited for anyone dealing with post-inflammatory hyperpigmentation who also wants pore refinement without layering multiple products.

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Beauty of Joseon Glow Deep Serum — Rice Bran Radiance on a Budget

Best for: Dry, dull skin that needs hydration and glow
Key ingredients: Rice Bran Extract, Alpha-Arbutin 2%, Niacinamide
Price range: $10–$16 on Amazon

This serum became a cult favorite because it delivers visible luminosity for under $15 — and the ingredient list actually justifies the hype. Rice bran extract provides ferulic acid and vitamin E naturally, while 2% alpha-arbutin suppresses tyrosinase activity for gradual brightening over four to six weeks. The niacinamide strengthens the skin barrier while complementing the brightening actives. It has a slightly viscous, honey-like texture that absorbs cleanly, making it ideal for dry skin types who find most niacinamide serums too matte.

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Some By Mi Yuja Niacin Blemish Care Serum — Vitamin C + Niacinamide Combo

Best for: Uneven skin tone and seasonal dullness
Key ingredients: Yuja Extract (citrus junos), Niacinamide, Tranexamic Acid
Price range: $14–$20 on Amazon

Some By Mi formulates with yuja (Korean citron) extract, which packs a natural concentration of vitamin C alongside niacinamide — two ingredients that research confirms work synergistically for tone correction. The serum targets dullness aggressively without the pH sensitivity issues you get from pure L-ascorbic acid formulas. Users with combination skin report visible brightening within three weeks, particularly on sun-damaged areas. The lightweight gel texture layers well under sunscreen, which matters because any brightening serum is wasted without SPF.

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Numbuzin No.3 Skin Softening Serum — Gentle Texture Refinement

Best for: Sensitive skin with rough texture
Key ingredients: Niacinamide, Galactomyces Ferment Filtrate, Hyaluronic Acid
Price range: $15–$22 on Amazon

Numbuzin's No.3 is the pick for anyone whose skin reacts to high-concentration niacinamide serums. It uses a moderate niacinamide level cushioned by galactomyces ferment filtrate — the same yeast-derived ingredient that made SK-II famous — to improve skin texture without triggering redness. The galactomyces adds amino acids and peptides that support cell turnover naturally. The effect is smoother, more refined skin that looks poreless under makeup rather than just oil-controlled.

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Skin1004 Madagascar Centella Tone Brightening Capsule Ampoule — Calm + Brighten

Best for: Redness-prone skin that also needs brightening
Key ingredients: Centella Asiatica, Niacinamide, Glutathione
Price range: $16–$24 on Amazon

Skin1004 sources its centella asiatica from Madagascar, where the plant's asiaticoside concentration tends to be higher due to growing conditions. Combined with niacinamide and glutathione, this ampoule addresses both redness and dullness simultaneously — something most serums force you to choose between. The centella calms inflammation while niacinamide and glutathione work on melanin regulation. Ideal for sensitive or rosacea-adjacent skin types who need brightening but can't tolerate vitamin C or AHA-based alternatives.

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Medicube Zero Pore Serum 2.0 — Clinical-Grade Pore Minimizing

Best for: Visibly enlarged pores and oily T-zone
Key ingredients: Niacinamide, AHA/BHA/PHA Complex, Houttuynia Cordata
Price range: $20–$28 on Amazon

Medicube built its brand on pore-focused dermatology, and the Zero Pore Serum 2.0 is their most refined formula yet. The triple-acid complex (AHA, BHA, PHA) provides chemical exfoliation at three different molecular sizes, clearing pore congestion from the surface down. Niacinamide regulates the sebum production that stretches pores in the first place, while houttuynia cordata — a Korean herbal anti-inflammatory — prevents the irritation that multi-acid formulas can cause. It's the priciest pick on this list, but if enlarged pores are your primary concern, the combination approach justifies the premium.

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Every serum on this list delivers on niacinamide's core promises — pore refinement, oil control, and brightening — but the best pick depends on what else your skin needs alongside it. Start with the product that matches your primary concern, give it a full four-week cycle, and let your pores do the talking.