In Focus: Niacinamide

Ask most facialists which single active earns its place in nearly every routine, and niacinamide tends to come up fast. This form of vitamin B3 is well tolerated, plays nicely with almost everything else on your shelf, and tackles a handful of concerns at once: oiliness, the look of enlarged pores, uneven tone, a stressed barrier. It suits nearly every skin type too, sensitive and reactive complexions included.

We build niacinamide into formulations right across our medical-grade ranges, and there's a simple reason for that. It earns its keep. Here's what the ingredient actually does, and which products put it to work best.

Not sure which products are right for your skin? Take our personalised skincare quiz for recommendations matched to your specific concerns.

What Is Niacinamide?

Niacinamide, sometimes labelled nicotinamide, is the active form of vitamin B3. It's worth separating from niacin itself, which can cause flushing. Niacinamide doesn't, which is exactly why it works so well applied topically, even on skin that reacts to most things.

In the skin, it acts as a precursor to two coenzymes, NAD+ and NADP+, that sit at the heart of how cells make energy and keep themselves ticking over. In plain terms, it supports the skin's everyday ability to function normally.

What are the key benefits of niacinamide?

Sebum Regulation

Niacinamide helps keep oil production in check, which makes it a genuine asset for oily and combination skin. With steady use over a few weeks, most people notice less shine through the T-zone and fewer congestion-related bumps.

Pore Refinement

Pores don't physically shrink, whatever the marketing says. What niacinamide does is keep them clearer and smooth the skin around them, so they're far less noticeable. The overall effect is a more even, refined-looking surface.

Barrier Strengthening

Niacinamide supports the skin's production of ceramides, the lipids that hold the protective barrier together. A better-functioning barrier holds onto moisture, feels less reactive, and copes better with cold wind, central heating and the rest. Handy for sensitive skin or anyone whose barrier has taken a battering.

Pigmentation Reduction

Niacinamide slows the way pigment travels between skin cells, which over time helps soften the look of hyperpigmentation, dark spots and the marks left behind after a breakout. It's gentler than a lot of brightening actives, so reactive skin usually gets on well with it.

Anti-Inflammatory Action

It calms things down. Redness settles, irritation eases, and that makes niacinamide a sensible pick for rosacea-prone skin, breakout-related flare-ups and generally short-tempered complexions.

Fine Line Reduction

By supporting the skin's own firmness and elasticity, niacinamide helps skin look smoother over time. It won't match a retinoid on established lines, but it's a strong supporting player in an anti-ageing routine.

What is the ideal niacinamide concentration?

Niacinamide does its job across a fairly wide range:

• 2-5% – A gentle starting point for sensitive skin, barrier support and general upkeep
• 5-10% – The sweet spot in most professional formulas, good for oil control and evening out tone
• 10%+ – Reserved for more stubborn concerns, though higher isn't automatically better for everyone

We lean towards the 5-10% band because it delivers reliably without the irritation some people hit at very high percentages.

Best Professional Niacinamide Products

Plenty of medical-grade formulas build niacinamide in as a key active. A few we rate, from brands we stock.

For Oily and Acne-Prone Skin

For Brightening and Even Tone

For Sensitive and Reactive Skin

How do you use niacinamide?

When to Apply

Morning, evening, or both. Niacinamide is stable in light and doesn't make skin more sensitive to the sun, so daytime use is completely fine.

Application Order

Cleanse, tone, then apply your niacinamide serum before heavier moisturisers and oils. Running several serums? Go thinnest to thickest.

Combining with Other Actives

This is one of the easier actives to slot in. It gets on with almost everything:

• Vitamin C – The old advice about keeping them apart is out of date. Modern formulas sit together happily. Vitamin C first, then niacinamide.
• Retinoids – A great pairing. Niacinamide can take the edge off retinoid irritation while adding its own benefits.
• AHAs/BHAs – Fine together. If your skin grumbles, space them out morning and evening.
• Hyaluronic Acid – A natural match for hydration and barrier support.

Who should use niacinamide?

Almost everyone, honestly. It's especially worth it for:

• Oily skin – Keeps oil in check without stripping
• Combination skin – Balances the oily and dry patches
• Sensitive skin – Supports the barrier and calms redness
• Acne-prone skin – Manages oil and softens the marks left after breakouts
• Mature skin – Supports firmness and a more even tone
• Pigmentation concerns – Gradually fades the look of dark spots

The only people who need to tread carefully are the rare few who flush at higher strengths, and the fix there is easy: use a lower percentage or buffer it.

How does niacinamide compare to other brightening ingredients?

So how does it stack up against the other tone-evening options?

Niacinamide vs Vitamin C: Vitamin C is the punchier antioxidant. Niacinamide is gentler and does more jobs. Plenty of routines happily run both.

Niacinamide vs Alpha Arbutin: Alpha arbutin is more single-mindedly focused on pigment. Niacinamide covers more ground. You can pair them.

Niacinamide vs Hydroquinone: Hydroquinone hits harder on stubborn pigment but comes with usage limits. Niacinamide is the safer bet for the long haul.

Add Niacinamide to Your Routine

Few actives are this flexible. Whatever your skin type or main concern, there's usually a sensible way to work niacinamide in, either on its own or as one piece of a fuller routine. We're happy to help you find it.

Related reading: Understanding Skincare Ingredients | Decoding Peptides

Ready to add it in? Browse our niacinamide serums and moisturisers.