In this review +
- What is the best UK niacinamide serum overall?
- What is the strongest niacinamide serum percentage?
- Is niacinamide safe for sensitive skin?
- What Is Niacinamide and Why Does Your Skin Need It?
- Medik8 Niacinamide Peptides
- Paula's Choice CLINICAL Niacinamide 20% Treatment
- Paula's Choice 10% Niacinamide Booster
- The INKEY List Niacinamide 20% Serum
- Minimalist 10% Niacinamide Serum
- Revolution Skincare 15% Niacinamide Serum
- The INKEY List 10% Niacinamide Serum
- The Ordinary Niacinamide 10% + Zinc 1%
- How to Use Niacinamide in Your Routine
Enlarged pores, uneven texture, dark spots that linger months after a breakout, that low-level oiliness that makes your makeup slide by lunchtime - niacinamide quietly addresses all of it. It is the one ingredient that dermatologists, beauty editors and your skin-obsessed friend all agree on, and for good reason. Vitamin B3 is backed by decades of clinical research, it plays nicely with almost every other active, and it works across every skin type. It is a cornerstone of anybudget skincare routine, so I have spent the last two years testing every formula I could find to bring you the best niacinamide serum UK shelves have to offer right now.
What is the best UK niacinamide serum overall?
It pairs 10% niacinamide with 4% tranexamic acid for hyperpigmentation, has a lightweight watery texture, and consistently delivers brightness within four to six weeks. It is my most-repurchased serum.
What is the strongest niacinamide serum percentage?
The strongest available niacinamide concentration is 20%, found in Paula's Choice CLINICAL Niacinamide 20% Treatment. Most skin types only need 5-10% for visible results, and percentages above 10% can cause flushing or tingling. I would start at 5% and only step up if your skin tolerates it well.
Is niacinamide safe for sensitive skin?
Niacinamide is one of the most sensitive-skin friendly actives in skincare. It strengthens the barrier rather than disrupting it. Most sensitive types tolerate 5% comfortably; if you experience flushing, drop to a 2% formula or apply every other night. I have not had a reactive episode in five years of daily use.
What Is Niacinamide and Why Does Your Skin Need It?
Niacinamide is a form of vitamin B3 that your skin cannot produce on its own. Applied topically, it strengthens the skin barrier by boosting ceramide production, regulates sebum so pores appear smaller, inhibits melanin transfer to help fade dark spots, and has anti-inflammatory properties that calm redness and breakouts. Unlike retinol or acids, it does not cause purging, peeling or sun sensitivity, which makes it one of the few actives genuinely suitable for every skin type - including sensitive.
Medik8 Niacinamide Peptides
- Size
- 30ml
- Key ingredient
- 10% Niacinamide, 3% Crystallide Peptide, Zinc PCA
- Best for
- Fine lines, enlarged pores
- Texture
- Silky, absorbs instantly
If you want a niacinamide serum that does double duty on pores and early signs of ageing, Medik8 has nailed it. Their Niacinamide Peptides formula pairs 10% niacinamide with a 3% crystallide peptide complex and zinc PCA, targeting enlarged pores, uneven texture and fine lines simultaneously.The texture is silky and absorbs almost instantly - none of that tacky residue you get with cheaper serums. I notice my pores looking tighter within an hour of application, and over a few weeks the overall refinement of my skin is undeniable. It is pricey at £49, but Medik8 formulations are clinical-grade and the results reflect that. This is the one I reach for when my skin needs to look its absolute best.Best for:Late twenties and beyond, when pore size and fine lines start demanding attention. Worth the splurge if you want clinical results.
Paula's Choice CLINICAL Niacinamide 20% Treatment
- Size
- 20ml
- Key ingredient
- 20% Niacinamide, Vitamin C, Acetyl Glucosamine
- Best for
- Stubborn pigmentation, melasma
- Texture
- Thick, lightweight cream
This is the heavy hitter. Paula's Choice does not mess around with their CLINICAL line, and this 20% niacinamide treatment is formulated for skin that needs serious brightening. Twenty per cent is a high concentration - one of the highest on the market - and they have paired it with vitamin C and acetyl glucosamine for extra pigmentation-fighting power.It is a thicker serum than most niacinamide products, almost a lightweight cream texture, and a little goes a long way. I would recommend building up to this if you have not used high-strength niacinamide before - start every other night. The results on dark spots and overall radiance are genuinely impressive, but the price and small bottle size (20ml) mean it is firmly a targeted treatment rather than a daily all-over serum.Best for:Stubborn hyperpigmentation, melasma, and post-inflammatory marks that lower concentrations have not shifted. The nuclear option, in the best way.
Paula's Choice 10% Niacinamide Booster
- Size
- 20ml
- Key ingredient
- 10% Niacinamide
- Best for
- Flexible layering, pore minimising
- Texture
- Lightweight liquid drops
The more approachable Paula's Choice option. The 10% Niacinamide Booster is designed to be mixed into your existing serum or moisturiser, or used on its own - which gives it a flexibility that standalone serums lack. Two to three drops is all you need.I love this for mornings because it is so lightweight it practically disappears. It visibly tightens pores over a few weeks and takes the edge off any redness. The booster format means you can adjust the strength - one drop for sensitive days, three for when you want full impact. At £49 for 20ml it is not cheap, but the dropper delivery means it lasts longer than you would think.Best for:People who want to add niacinamide to a routine they already love without replacing anything. Smart, flexible formulation.
The INKEY List Niacinamide 20% Serum
- Size
- 30ml
- Key ingredient
- 20% Niacinamide, Hyaluronic Acid
- Best for
- Redness, oil control
- Texture
- Lightweight, matte finish
The INKEY List has quietly built one of the strongest affordable skincare ranges in the UK, and their Supersolutions Niacinamide 20% is the powerhouse of the line. Twenty per cent concentration at £13 is remarkable value - you are getting the same strength as Paula's Choice CLINICAL for a quarter of the price.It is specifically formulated for redness and excess oil, and it delivers. The serum is fragrance-free, lightweight, and leaves a lovely matte-ish finish that oily skin types will appreciate. If you are prone to redness around your nose and cheeks that flares up with every temperature change, this may help visibly calm things down within a couple of weeks.Best for:Redness-prone and oily skin on a budget. Extraordinary concentration for the price.
Minimalist 10% Niacinamide Serum
- Size
- 30ml
- Key ingredient
- 10% Niacinamide, 1% Zinc
- Best for
- Acne, sensitive skin
- Texture
- Water-like, instant absorption
Minimalist is an Indian skincare brand that has been gaining serious traction in the UK, and their 10% niacinamide serum shows why. The formula is clean and straightforward - 10% niacinamide with zinc for oil control and blemish reduction, no unnecessary fragrance or filler ingredients.The texture is truly water-like and absorbs in seconds. It works brilliantly under sunscreen without any stickiness. I particularly rate this for acne-prone skin because the zinc helps regulate sebum production while the niacinamide fades the marks left behind. At around £10, it is an easy recommendation for anyone who wants results without the faff of a complicated formula.Best for:Acne-prone skin that needs both active breakout control and post-acne mark fading. Simple, effective, affordable.
Revolution Skincare 15% Niacinamide Serum
- Size
- 30ml
- Key ingredient
- 15% Niacinamide, Zinc
- Best for
- Blemishes, budget
- Texture
- Slightly thick, absorbs well
Revolution Skincare has come a long way from being dismissed as just a makeup dupe brand. Their 15% Niacinamide Super Strength Serum offers a higher concentration than most budget competitors at under £9, and it does the job. Pore appearance reduces, oil production calms down, and blemishes heal a bit faster.The formula includes zinc for additional oil control. The texture is slightly thicker than The Ordinary's but still absorbs well. It is widely available at Superdrug, Boots and Amazon, which makes it one of the easiest niacinamide serums to get your hands on in the UK. Not the most elegant formula on this list, but for pure value per percentage point it is hard to argue with.Best for:Budget-conscious buyers who want a higher concentration than the standard 10% without paying premium prices.
The INKEY List 10% Niacinamide Serum
- Size
- 30ml
- Key ingredient
- 10% Niacinamide, Hyaluronic Acid
- Best for
- Everyday use, all skin types
- Texture
- Lightweight watery serum
The gentler sibling of the 20% Supersolutions version. The INKEY List 10% Niacinamide is a no-frills, effective daily serum that does exactly what it says - reduces oil, minimises pore appearance, and helps even out your skin tone over time.If you are new to niacinamide and the idea of 15-20% concentrations makes you nervous, this is a beautiful starting point. It is vegan, cruelty-free, and the price means you can use it generously without wincing. I think of this as the reliable everyday basic - not the most exciting product on the list, but one that quietly does brilliant work without any drama.Best for:Niacinamide beginners and anyone who wants a solid, fuss-free daily serum at a friendly price.
The Ordinary Niacinamide 10% + Zinc 1%
- Size
- 30ml
- Key ingredient
- 10% Niacinamide, 1% Zinc
- Best for
- Oily skin, beginners
- Texture
- Lightweight, slightly viscous
The one that started the niacinamide craze. The Ordinary's Niacinamide 10% + Zinc 1% has been the best-selling serum in the UK for years and it is still a perfectly solid product at an astonishing £5. The zinc helps regulate oil production, making it particularly good for oily and combination skin types.I will be honest though - the formula can pill under certain moisturisers and sunscreens if you are not careful with layering. Let it fully absorb for a good 60 seconds before applying anything on top. Some people also find 10% niacinamide combined with zinc a touch drying, so if your skin leans dry you might prefer the INKEY List or Beauty of Joseon instead. But for the price? It is hard to beat as a gateway into niacinamide.Best for:Oily skin on a tight budget. The gateway drug to proper skincare - cheap enough to try without any commitment.
How to Use Niacinamide in Your Routine
When should I apply niacinamide?
Apply niacinamide after cleansing and toning, before heavier serums and moisturiser. It works in both morning and evening routines. In the morning, layer it under SPF. In the evening, apply before retinol if you use one.
Which concentration should I start with?
If you have never used niacinamide before, start with a 5-10% formula like The Ordinary 10% + Zinc or the INKEY List 10%. Once your skin tolerates that well after two to three weeks, you can move up to 15-20% if your concerns warrant it.
How much should I use?
Two to three drops is enough for the full face. More is not better with niacinamide - using too much can cause temporary flushing in some people. Pat gently into the skin rather than rubbing.
Can I layer it with other actives?
Niacinamide plays well with almost everything. It pairs brilliantly with retinol, hyaluronic acid, peptides, and ceramides. The only combination to be cautious with is pure L-ascorbic acid vitamin C - use them at different times of day if possible.
Frequently asked questions
What does niacinamide do for your skin?+
Niacinamide (vitamin B3) may help minimise pore appearance, regulate oil production, fade dark spots and post-acne marks, strengthen the skin barrier, and reduce redness. It is one of the most versatile and well-researched actives in skincare.
Can I use niacinamide every day?+
Yes - niacinamide is gentle enough for twice-daily use at concentrations up to 10%. For higher concentrations (15-20%), start every other day and build up. It does not cause sun sensitivity, so it is safe for both morning and evening routines.
What concentration of niacinamide is best?+
Five to ten per cent is the sweet spot for most people. Studies show significant benefits at 5%, and 10% is the most common effective concentration. Higher strengths (15-20%) target stubborn pigmentation but may cause mild irritation if you are not used to them.
Can I use niacinamide with retinol?+
Absolutely. Niacinamide and retinol are actually a brilliant pairing - niacinamide may help reduce the irritation that retinol can cause while both work on texture and tone. Apply niacinamide first, let it absorb, then follow with retinol.
Can I use niacinamide with vitamin C?+
How long does niacinamide take to work?+
Most people notice reduced oiliness and smaller-looking pores within two to four weeks. For pigmentation fading and overall skin tone improvement, give it six to twelve weeks of consistent use. Patience genuinely pays off with this ingredient.
