What niacinamide percentage do you actually need?
Short answer: the clinical studies we found used 2% niacinamide for oiliness and 5% for spots, blotchiness and fine lines. Serums at 10% to 12% are popular, but we found no trial showing they beat 5%, and higher strengths are more likely to sting reactive skin.
Checked against brand ingredient lists on and against dermatology sources (American Academy of Dermatology, FDA, peer-reviewed studies). How we research · Editorial policy · 9 sources
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How this page was made: we compared what each brand publishes (actives, strengths, full ingredient lists, directions and prices) and checked the claims against dermatology guidance and published studies, all linked at the bottom. We read the main clinical studies on niacinamide and the brand pages for four products. Brand pages checked November 11, 2026; prices checked November 2026. We haven’t tested these products hands-on, we don’t score or rate them, and a commission never decides a pick. Our methodology.
Not medical advice. This page compares cosmetic products. If you have a skin condition, use prescription treatment, or are pregnant or breastfeeding, ask a dermatologist or your doctor before starting something new.
Short answer
the clinical studies we found used 2% niacinamide for oiliness and 5% for spots, blotchiness and fine lines. Serums at 10% to 12% are popular, but we found no trial showing they beat 5%, and higher strengths are more likely to sting reactive skin.
Last updated Ingredient lists checked 2026-11-11Prices checked November 2026
The numbers side by side
| In brief | |
|---|---|
| The rule of thumb | the clinical studies we found used 2% niacinamide for oiliness and 5% for spots, blotchiness and fine lines. |
| Who should skip it | If your moisturizer already lists niacinamide near the top and your skin is happy, a separate niacinamide serum may add little. |
| Spending less | Cheapest stated strength: The Ordinary Niacinamide 10% + Zinc 1% at $6. Cheapest 5%: The Ordinary’s Niacinamide 5% Face and Body Emulsion at about $14 (checked November 11, 2026), which also covers the body. |
Niacinamide labels have crept upward, from 2% in moisturizers to 10%, 12% and beyond in serums. Higher sounds better, but what matters is what was tested.
What’s in each bottle?
Copied from each brand’s own product page (or the sunscreen’s Drug Facts) on November 11, 2026. Brands reformulate, so the carton in your hand is the final word.
The Ordinary Niacinamide 5% Face and Body Emulsion
- Key actives
- Niacinamide 5% (brand-stated)
- Base
- Water-based emulsion for face and body
- Brand price
- $14.00
Full ingredient list
Aqua (Water), Ethyl Macadamiate, Niacinamide, Propanediol, Glycerin, Sphingomonas Ferment Extract, Pentylene Glycol, Ethylhexyl Olivate, Polyglyceryl-4 Oleate, Sodium Acrylates Copolymer, Isoceteth-20, Sodium Citrate, Citric Acid, Malic Acid, Trisodium Ethylenediamine Disuccinate, Tocopherol, Ethylhexylglycerin, Phenoxyethanol, Chlorphenesin.
The Ordinary product page · Check price on Amazon (opens in a new tab)
The Ordinary Niacinamide 10% + Zinc 1%
- Key actives
- Niacinamide 10%, zinc PCA 1% (brand-stated)
- Base
- Water-based serum
- Brand price
- $6.00 · 30 ml (60 ml also sold)
- Brand notes
- Brand compatibility tool says not to use it in the same routine as its direct or indirect vitamin C products; patch test advised.
Full ingredient list
Aqua (Water), Niacinamide, Pentylene Glycol, Zinc PCA, Dimethyl Isosorbide, Tamarindus Indica Seed Gum, Xanthan Gum, Isoceteth-20, Ethoxydiglycol, Phenoxyethanol, Chlorphenesin.
The Ordinary product page · Check price on Amazon (opens in a new tab)
Naturium Niacinamide Serum 12% Plus Zinc 2%
- Key actives
- Niacinamide 12%, zinc PCA 2% (brand-stated)
- Base
- Water-based serum with hyaluronic acid
- Brand price
- $17.00 · 1.0 fl oz
- Brand notes
- Brand lists it as fragrance-free; says it can be used morning and evening.
Full ingredient list
Water, Niacinamide, Propanediol, Glycerin, Zinc PCA, Polyacrylate Crosspolymer-11, Sodium Hyaluronate, Dimethicone, Caprylyl Glycol, Phenoxyethanol, Xanthan Gum, Potassium Sorbate, Glyceryl Polyacrylate, Tocopheryl Acetate, Hexylene Glycol, Citric Acid.
Naturium product page · Check price on Amazon (opens in a new tab)
What was each strength tested for?
| Strength | Study | Who and how long | What changed |
|---|---|---|---|
| 2% | Draelos[1] et al. 2006 | 100 Japanese adults, 4 weeks; 30 white adults, 6 weeks | Lower oil output (Japanese group); lower surface oil (white group) |
| 2% + sunscreen | Hakozaki[2] et al. 2002 | 120 people with facial tanning | Part of a trial on skin lightness |
| 5% | Hakozaki et al. 2002 | 18 people with hyperpigmentation, 4 weeks | Less visible hyperpigmentation than the base cream |
| 5% | Bissett[3] et al. 2005 | 50 women, 12 weeks, split-face | Fewer visible fine lines, spots, red blotchiness and sallowness; better elasticity |
Which strength suits your skin?
- Oily, shiny T-zone: 2% and up. A moisturizer that lists niacinamide high in the ingredients may be enough.
- Dark spots or blotchiness: 5% has the trial data. Pair it with daily SPF 30+, which the AAD[5][6] calls the starting point for fading dark spots.
- Sensitive or dry: start with 5% in an emulsion, such as The Ordinary’s Niacinamide 5% Face and Body Emulsion, rather than a 10% serum.
- You already have a 10% serum and it feels fine: no reason to stop. Just don’t assume moving to 15% or 20% will help more.
Does niacinamide help the skin barrier?
Tanno[4] et al. (2000) found niacinamide increased ceramide production in human skin cells and reduced water loss through the skin in a follow-up test. That is why you’ll see it in barrier-focused moisturizers such as CeraVe PM and La Roche-Posay Toleriane Double Repair. Those brands don’t state the percentage.
Who should skip it?
If your moisturizer already lists niacinamide near the top and your skin is happy, a separate niacinamide serum may add little.
- Serums above 10% for reactive skin: No study we found used more than 5%, and higher strengths are more likely to sting. Consider instead: a 5% emulsion.
- Anyone expecting niacinamide to clear acne: The studies measured oil and appearance, not acne. See a dermatologist for persistent breakouts.
How can you spend less?
Cheapest stated strength: The Ordinary Niacinamide 10% + Zinc 1% at $6. Cheapest 5%: The Ordinary’s Niacinamide 5% Face and Body Emulsion at about $14 (checked November 11, 2026), which also covers the body.
What should you know before you start?
- Patch test first. The American Academy of Dermatology suggests applying a new product to a quarter-sized area twice a day for 7 to 10 days and stopping if you react. AAD: how to test skin care products.
- Add one new product at a time, and give it time: the AAD says many anti-aging products take 6 weeks to 3 months to show results. AAD: get the most from anti-aging products.
What do people ask most?
Is 10% niacinamide too strong?
What percentage is best for dark spots?
What percentage reduces oiliness?
How long until niacinamide works?
Where this comes from
We opened and read every source below for this page. Ingredient lists, strengths, directions and prices come from each brand’s own product page; health and usage guidance comes from the American Academy of Dermatology, the FDA, the National Eczema Association and peer-reviewed studies (via PubMed). Prices checked: November 2026; confirm on the seller’s site before you buy.
- Draelos et al. 2006, Journal of Cosmetic and Laser Therapy: 2% niacinamide and facial sebum (pubmed.ncbi.nlm.nih.gov)
- Hakozaki et al. 2002, British Journal of Dermatology: Niacinamide and cutaneous pigmentation (pubmed.ncbi.nlm.nih.gov)
- Bissett et al. 2005, Dermatologic Surgery: Niacinamide improves aging facial skin appearance (pubmed.ncbi.nlm.nih.gov)
- Tanno et al. 2000, British Journal of Dermatology: Nicotinamide increases ceramide biosynthesis (pubmed.ncbi.nlm.nih.gov)
- AAD: How to fade dark spots in darker skin tones (aad.org)
- AAD: How to test skin care products (aad.org)
- The Ordinary (brand page): The Ordinary Niacinamide 5% Face and Body Emulsion (theordinary.com)
- The Ordinary (brand page): The Ordinary Niacinamide 10% + Zinc 1% (theordinary.com)
- Naturium (brand page): Naturium Niacinamide Serum 12% Plus Zinc 2% (naturium.com)
Related
The Ordinary Niacinamide 10% + Zinc 1% vs Naturium Niacinamide 12% + Zinc 2%
Both are high-strength niacinamide serums with zinc PCA, used morning and night. The Ordinary’s is 10%; Naturium’s is 12% with hyaluronic acid. Published trials used far less niacinamide than either: 2% to 5%.
guideNiacinamide vs vitamin C for dark spots: which should you try first?
Short answer: start with daily sunscreen (tinted, if you have a darker skin tone), then add one product. Niacinamide is the gentler first try with clearer clinical data on spots; L-ascorbic acid vitamin C is the stronger antioxidant but can sting.
guideCan you use niacinamide with vitamin C or retinol?
Short answer: niacinamide with retinol is widely accepted; even Paula’s Choice says they pair well. Niacinamide with vitamin C is where brands disagree, so the simple default is vitamin C in the morning and niacinamide or retinol at night.
comparisonCeraVe PM Facial Moisturizing Lotion vs La Roche-Posay Toleriane Double Repair
These two read alike on the shelf: glycerin, niacinamide, ceramide, fragrance-free. Underneath, CeraVe has three ceramides, cholesterol and hyaluronic acid in a light lotion labeled for night; La Roche-Posay has one ceramide and squalane in a lightweight cream for day or night.
comparisonCeraVe Resurfacing Retinol Serum vs RoC Retinol Correxion Capsules
Neither brand states how much retinol is inside. CeraVe surrounds encapsulated retinol with niacinamide, three ceramides and licorice-derived dipotassium glycyrrhizate; RoC seals retinol in an eight-ingredient silicone serum, one capsule per night.
comparisonEltaMD UV Clear SPF 46 vs EltaMD UV Daily SPF 40
Both use zinc oxide 9% and octinoxate 7.5%. The difference is the base: UV Clear is oil-free with 5% niacinamide and is aimed at sensitive, rosacea- and acne-prone skin; UV Daily adds petrolatum and hyaluronic acid and is aimed at dehydrated and mature skin.