Best Niacinamide Products in K-Beauty: Concentration Compared
By Dr. Soo-Jin Kim · Seoul Cosmetic Chemist & Senior Editor, K-Ingredient
Updated Aug 2026- Best balanced formula: Beauty of Joseon Glow Serum — 2% niacinamide + 60% propolis
Disclosure: this article contains affiliate links — we may earn a commission on qualifying purchases at no extra cost to you.
Quick Answer:
- Best balanced formula: Beauty of Joseon Glow Serum — 2% niacinamide + 60% propolis
- Best high-concentration: COSRX Niacinamide 15 Serum — 15% niacinamide for under ₩15,000
- Best triple-brightening combo: Some By Mi Galactomyces Pure Vitamin C Glow Serum — 2% niacinamide + vitamin C
- Best convenient format: Numbuzin No.5 Vitamin-Niacinamide Concentrated Pad — 5% niacinamide, pre-soaked pads
Niacinamide (나이아신아마이드) is Korea's most versatile skincare ingredient. It brightens, controls oil, minimizes pores, strengthens the barrier, and reduces hyperpigmentation — all without the irritation risk of retinol or vitamin C. Korean brands have been formulating with niacinamide for decades, and peer-reviewed clinical research on niacinamide backs the hype: a 2006 controlled study found 2% niacinamide significantly lowered facial sebum production (Draelos et al., Journal of Cosmetic and Laser Therapy), while a separate trial found 5% niacinamide measurably reduced hyperpigmentation after 4 weeks (Hakozaki et al., British Journal of Dermatology, 2002).
But concentration isn't everything. The delivery system, supporting ingredients, and formulation pH all affect how well niacinamide works. We compared six real, currently-sold K-beauty niacinamide products by verified concentration, supporting ingredients, and price.
K-Beauty Niacinamide Products by Concentration
1. Beauty of Joseon Glow Serum — 2% Niacinamide
Source: Olive Young
Best For: Gentle brightening with anti-inflammatory propolis
The Glow Serum pairs 2% niacinamide with 60% propolis extract — combining niacinamide's brightening with propolis's antibacterial and anti-inflammatory properties. The 2% concentration is low enough to avoid the flushing that higher concentrations can cause, and it's the same concentration a 2006 controlled study found effective at reducing facial sebum production within 2-6 weeks (Draelos et al.).
The honey-like texture absorbs without stickiness. Every ingredient in the formula carries an EWG Skin Deep "Green" (low-hazard) rating.
- Price: ₩15,000 (~$11 USD)
- Concentration: 2% niacinamide
- Size: 30ml
Pros:
- 60% propolis adds anti-inflammatory + antibacterial benefits
- 2% concentration minimizes flushing risk
- Every ingredient rated "Green" (low-hazard) on EWG Skin Deep
Cons:
- 2% may be too low for users wanting aggressive brightening
- 30ml is small for the price
2. COSRX Niacinamide 15 Serum — 15% Niacinamide
Source: Olive Young
Best For: Maximum potency niacinamide seekers
COSRX's 15% niacinamide serum is the highest-concentration K-beauty niacinamide product widely available. That said, published research doesn't show a clear dose-response above 5% — the controlled studies backing niacinamide's sebum-control and brightening effects used 2% and 5%, with no strong evidence that higher percentages work faster or more dramatically. COSRX's 15% mainly appeals to users who've already built tolerance and want a stronger daily dose, or who use it a few times a week rather than daily.
The lightweight, watery serum absorbs quickly. COSRX added zinc PCA for additional sebum control. However, 15% niacinamide can cause temporary flushing (redness, warmth) in some users — start with every other day and build up.
- Price: ₩14,000 (~$10 USD)
- Concentration: 15% niacinamide
- Size: 20ml
Pros:
- 15% concentration — clinical-strength potency
- Added zinc PCA for synergistic oil control
- COSRX quality and reliability
Cons:
- 15% can cause flushing in sensitive individuals
- 20ml is very small — lasts 3-4 weeks with daily use
3. Some By Mi Galactomyces Pure Vitamin C Glow Serum — 2% Niacinamide
Source: Olive Young
Best For: Combined vitamin C + niacinamide brightening
Some By Mi combines 2% niacinamide (20,000ppm) with 3% pure ascorbic acid (vitamin C) and 75% galactomyces ferment filtrate — a triple-brightening formula that attacks hyperpigmentation through three different mechanisms. The galactomyces ferment adds vitamins, amino acids, and minerals through fermentation.
The 2% niacinamide concentration matches the dose used in the controlled sebum-production study cited above — enough to be effective, low enough to keep flushing risk minimal even when layered with ascorbic acid.
- Price: ₩18,000 (~$13 USD)
- Concentration: 2% niacinamide
- Size: 30ml
Pros:
- Triple brightening: niacinamide + ascorbic acid + galactomyces
- 2% niacinamide keeps irritation risk low even combined with vitamin C
- 75% galactomyces ferment for additional skin benefits
Cons:
- Ascorbic acid (pure vitamin C) can still cause temporary flushing or tingling on its own
- 30ml is standard but not generous
4. Numbuzin No.5 Vitamin-Niacinamide Concentrated Pad — 5% Niacinamide
Source: Olive Young
Best For: Convenient pad-format application at a moderate-high concentration
Numbuzin's pad format makes niacinamide application effortless — grab a pad, swipe across your face, done. Each pad is pre-soaked with 5% niacinamide (50,000ppm), plus tranexamic acid, vitamin C, and glutathione for a comprehensive brightening treatment.
The textured side provides gentle physical exfoliation while the smooth side deposits the essence. 70 pads per jar lasts 2+ months. Because 5% sits above the 2% dose most studied for sensitivity, first-time users may want to start every other day.
- Price: ₩23,000 (~$17 USD)
- Concentration: 5% niacinamide
- Size: 70 pads
Pros:
- Pad format for effortless daily application
- Multi-brightening: niacinamide + tranexamic acid + vitamin C + glutathione
- 70 pads — lasts 2+ months
Cons:
- 5% concentration carries more flushing risk than 2% formulas for sensitive skin
- Pad format creates more waste than bottled serums
5. Goodal Green Tangerine Vita C Dark Spot Serum — 4% Niacinamide
Source: Olive Young
Best For: Korean vitamin C + niacinamide combination
Goodal's Vita C serum uses 70% fresh green tangerine extract — which the brand markets as containing 10x more vitamin C than lemons — combined with 4% niacinamide and arbutin. This Jeju Island-sourced ingredient is uniquely Korean, and the brand's marketing claims visible dark-spot improvement within about two weeks of consistent twice-daily use (a marketing/user-reported claim, not a published peer-reviewed clinical trial).
The lightweight gel-serum absorbs fast and layers well. One of Olive Young's perennial bestsellers.
- Price: ₩22,000 (~$16 USD)
- Concentration: 4% niacinamide
- Size: 30ml
Pros:
- Jeju green tangerine — uniquely Korean vitamin C source
- 4% niacinamide plus arbutin for layered brightening
- Olive Young perennial bestseller
Cons:
- 30ml runs out in 4-5 weeks
- Citrus-derived actives may sensitize some skin types
6. Torriden Balanceful Cica Control Serum — 4% Niacinamide
Source: Olive Young Global / Torriden Official
Best For: Sensitive, oily, or acne-prone skin wanting sebum control + soothing
Note: Torriden's original (non-"Control") Balanceful Cica Serum does not contain niacinamide — its formula is centella asiatica, hyaluronic acid, and panthenol only. The niacinamide + cica pairing is the Balanceful Cica Control Serum, which combines 4% niacinamide with a "5D Cica Complex" (five centella asiatica-derived ingredients) and zinc hyaluronate to regulate sebum and calm skin.
Torriden markets this as a daily sebum-control serum for sensitive and acne-prone skin, positioned as gentler than straight niacinamide serums because of the added cica and zinc hyaluronate.
- Price: $25 USD (Torriden official store)
- Concentration: 4% niacinamide
- Size: 50ml
Pros:
- Niacinamide + 5D cica complex for brightening without irritation
- Zinc hyaluronate adds sebum control without drying
- 50ml — more generous than most competitor serums
Cons:
- 4% niacinamide is a moderate dose — some sensitive skin may still see flushing
- Easy to confuse with Torriden's other Balanceful serums (Cica Serum, Cica Calming Serum), which don't contain niacinamide — check the label for "Control"
Niacinamide Concentration Comparison
| Product | Niacinamide % | Supporting Actives | Price | Size |
|---|---|---|---|---|
| Beauty of Joseon Glow | 2% | 60% propolis | ₩15,000 (~$11) | 30ml |
| Some By Mi Galactomyces | 2% | Ascorbic acid, galactomyces | ₩18,000 (~$13) | 30ml |
| Goodal Vita C | 4% | Green tangerine extract, arbutin | ₩22,000 (~$16) | 30ml |
| Torriden Balanceful Control | 4% | 5D cica complex, zinc hyaluronate | $25 | 50ml |
| Numbuzin No.5 Pad | 5% | Tranexamic acid, vitamin C, glutathione | ₩23,000 (~$17) | 70 pads |
| COSRX Niacinamide 15 | 15% | Zinc PCA | ₩14,000 (~$10) | 20ml |
FAQ
What concentration of niacinamide actually works?
The controlled research is specific about dose: a 2006 study found 2% niacinamide significantly reduced facial sebum production within 2-6 weeks (Draelos et al.), while a 2002 study found 5% niacinamide significantly reduced hyperpigmentation after 4 weeks (Hakozaki et al.). There isn't strong published evidence that concentrations above 5% work faster or better — but they do carry more flushing risk. See our niacinamide clinical research review.
Can niacinamide cause skin flushing?
Yes, especially at concentrations above 5%. Niacinamide can trigger histamine release in some individuals, causing temporary redness and warmth. This is not an allergy — it's a normal pharmacological response that usually diminishes with continued use. Start with lower concentrations and build up.
Can I use niacinamide with vitamin C?
The old myth that niacinamide + vitamin C cancel each other out has been debunked. Multiple Korean products (Some By Mi, Goodal, Numbuzin) successfully combine both. However, the combination may cause temporary flushing in some users. If this happens, use vitamin C in the morning and niacinamide at night.
How long does niacinamide take to show results?
Based on the controlled studies above: oil/sebum reduction showed up at 2-6 weeks with 2% niacinamide, and hyperpigmentation improvement showed up at 4 weeks with 5% niacinamide. Barrier and texture benefits are generally reported in the 4-8 week range in the wider niacinamide literature. Individual timelines vary, and there's no solid evidence that going above 5% speeds this up.
Is niacinamide or vitamin C better for brightening?
They work through different mechanisms. Niacinamide inhibits melanin transfer from melanocytes to keratinocytes. Vitamin C inhibits tyrosinase, the enzyme that produces melanin. Using both targets hyperpigmentation at two different stages, which is why Korean brands increasingly combine them. See our Korean brightening ingredients comparison.
Related Reading
- Niacinamide in Korean Skincare: What Korean Clinical Trials Actually Found
- Korean Brightening Ingredients: Vitamin C vs. Arbutin vs. Tranexamic Acid
- Korean Glass Skin: The Ingredient Stack Behind the Trend
Affiliate disclosure: Some links in this article may earn us a small commission at no extra cost to you. Concentrations, ingredients, and pricing in this article are verified against brand/retailer product pages and, where noted, peer-reviewed research.
— The Korean Skincare Trends Team