Products & Ingredients

Does The Ordinary Niacinamide Work?

Few skincare products have been discussed, defended, and complained about as much as The Ordinary's Niacinamide 10% + Zinc 1%. It is cheap, it is everywhere, and it has a devoted following alongside a vocal minority who found it sticky, pilling, or irritating.

The Ordinary built an empire on the idea that you do not need to pay much for ingredients that work.

Its Niacinamide 10% + Zinc 1% serum is the purest expression of that idea: a high-concentration active for the price of a coffee, reviewed thousands of times by people who either swear by it or cannot stand it.

So does it actually work, or is its reputation mostly the result of price and momentum?

It is a bit like a reliable, inexpensive house brand: unglamorous, occasionally awkward, and often perfectly good at the job.

Quick answerYes, The Ordinary's Niacinamide 10% + Zinc 1% works for its intended purposes, which are oil control, pore appearance, and blemish-prone skin support.

Medically reviewed by Dermatology reviewer · Updated Sep 11, 2026 · 5 min read

Active10% Niacinamide

Secondary1% Zinc PCA

Typical Price~$6-10

Best ForOily, congested skin

EvidenceGood

Key answer

Yes

It works for its intended purposes, but the 10% concentration is not for everyone.

Evidence: Moderate - Works, with caveats
Best for: Oily and combination skin wanting affordable oil control
Limitation: Sensitive skin or those who dislike pilling textures

See what the evidence shows

Short version

Story in brief

The Ordinary's Niacinamide 10% + Zinc 1% is a water-based serum combining a high concentration of niacinamide with zinc PCA, an ingredient often included for oil regulation. It is marketed for blemish-prone skin, visible shine, and enlarged pores.

Niacinamide itself is well studied for barrier support, oil regulation, and reducing inflammation. Zinc PCA is commonly used for its astringent and oil-balancing properties. The combination is sensible on paper, and many users report reduced shine and smoother texture within weeks.

The 10% concentration is the main point of friction. Much of the research on niacinamide for sebum control used 2-5%, and higher concentrations are associated with more irritation, stickiness, and pilling under other products. For many people it works well; for a meaningful minority, a lower-concentration alternative suits them better.

Mental model

Visual explanation

Diagram of niacinamide and zinc effects on oil and pores

Evidence

What the evidence shows

The formula works, but its 10% concentration is above the range most research supports - which means the main question is not whether it works, but whether your skin tolerates that much niacinamide at once.

Strong fit means the advice is central to that goal.Depends means formula, tolerance, or context matters more.Use caution means do not treat it as the main answer.

If your goal is
ActiveUse caution
Fit signal
Limited evidence
10% Niacinamide
If your goal is
SecondaryUse caution
Fit signal
Limited evidence
1% Zinc PCA
If your goal is
Best forUsually relevant
Fit signal
Often useful
Oily, congested
If your goal is
Watch forDepends
Fit signal
Possible fit
Pilling, irritation

Practical use

How to use it

Start slowly
Use every other day for the first week or two to assess tolerance.
Apply to clean, dry skin
A few drops before moisturizer; avoid mixing with vitamin C in the same routine.
Switch if irritated
If pilling or irritation persists, try a 5% niacinamide formula instead.

Safety

Side effects and cautions

Assuming breakouts are purging
Niacinamide does not cause true purging; irritation is more likely.
Layering too many products on top
The formula can pill; apply it before heavier products and wait for absorption.
Using it alongside vitamin C in the same step
The brand recommends separating them into different routines.

Fit

Who should be careful

Sensitive skin or those who dislike pilling textures

Worth noting

Small details that can change the answer

Concentration. At 10%, the niacinamide level is higher than the 2-5% used in much sebum research.
Zinc PCA. Included at 1% for oil-balancing and astringent support.
Texture. It is water-based and can feel sticky or pill under certain products.
Purging. Niacinamide is not an exfoliant and should not cause true purging.

The Ordinary's Niacinamide 10% + Zinc 1% does work for oil control and pore appearance.

Its 10% concentration is above the 2-5% range supported by much research.

Pilling, stickiness, and irritation are the most common complaints.

It suits oily and combination skin best; sensitive skin may prefer lower concentrations.

At its price, it remains a reasonable entry point to niacinamide.

The Ordinary 10% Niacinamide

goodBest for: Oily skin wanting strong oil control

Very affordable · High concentration · Widely available

Limitations: Can irritate · May pill · Sticky texture

5% Niacinamide serum

bestBest for: Most skin types, including sensitive

Evidence-backed range · Better tolerated · Less pilling

Limitations: Milder oil control for some

Niacinamide in a moisturizer

goodBest for: Those wanting niacinamide without an extra step

Convenient · Usually lower % · Gentle

Limitations: Less customizable

1
First few days
Possible change in texture or slight stickiness.
2
1-2 weeks
Oil control may begin to be noticeable for some.
3
4 weeks
Pore appearance and oil balance typically show improvement.
4
8-12 weeks
Full benefit for texture and clarity.

MythIt causes purging.Reality

Niacinamide is not an exfoliant; breakouts are usually irritation, not purging.

MythHigher percentage means better results.Reality

Research supports 2-5%; higher concentrations mostly add irritation risk.

MythIt works for everyone.Reality

Sensitive or very dry skin may find it too much at 10%.

These are aggregated user impressions, not clinical findings.

Review · Anecdotal

Many oily-skin users report reduced shine and smoother texture within weeks.

positive

Review · Anecdotal

Some users report pilling under makeup or other products.

negative

Review · Anecdotal

A minority report irritation or breakouts, often attributed to the 10% concentration.

negative

Questions

Frequently asked questions

Does The Ordinary Niacinamide actually work?

Yes, for oil control and pore appearance, though its 10% concentration is higher than research typically supports.

Why does it pill on my skin?

The formula can pill under certain products; apply it to clean skin and wait for absorption before layering.

Can it cause breakouts?

It can cause irritation-related breakouts in some people, but not true purging, as it is not an exfoliant.

Is 10% niacinamide too strong?

For some skin, yes; 5% is often equally effective and better tolerated.

Understand your skin type, tone, and what your skin is doing.

Start from a skin problem or visible change.

Understand what ingredients do and whether they fit your skin.

Turn skin information into daily decisions.

A small selection of skincare products recommended by OuterDerm for simple, effective everyday routines.

Go deeper into skin science, myths, evidence, and safety.

Does The Ordinary Niacinamide Work?

Yes

Story in brief

Visual explanation

What the evidence shows

Does this advice apply to me?

How to use it

Start slowly

Apply to clean, dry skin

Switch if irritated

Side effects and cautions

Who should be careful

Small details that can change the answer

How it compares to lower-concentration options

The Ordinary 10% Niacinamide

5% Niacinamide serum

Niacinamide in a moisturizer

What to expect and when

Common claims and what's true

What users commonly report

Frequently asked questions