Sunday Riley

Sunday Riley B3 Nice 10% Niacinamide Serum.

Serums

About this product

A water-based serum with 10% niacinamide, trans-resveratrol and squalane, designed to help even skin tone and improve the look of pores.

Full ingredients

Water/Eau/Aqua, Niacinamide, Glycerin, Phenyl Trimethicone, Dimethyl Isosorbide, Octyldodecanol, Resveratrol, Diglucosyl Gallic Acid, Asiaticoside, Madecassoside, Epigallocatechin Gallatyl Glucoside, Boswellia Serrata Resin Extract, Curcuma Longa (Turmeric) Root Extract, Ocimum Basilicum (Basil) Flower/Leaf Extract, Ocimum Sanctum Leaf Extract, Aloe Barbadensis Flower Extract, Solanum Melongena Fruit Extract, Coccinia Indica Fruit Extract, Betaine, Corallina Officinalis Extract, Melia Azadirachta Flower Extract, Melia Azadirachta Leaf Extract, Benzotriazolyl Dodecyl P-Cresol, PEG-8, Tetrahydrodiferuloylmethane, Tetrahydrodemethoxydiferuloylmethane, Tetrahydrobisdemethoxydiferuloylmethane, Fruit Extract, Argania Spinosa Kernel Oil, Citrus Aurantium Dulcis (Orange) Peel Extract, Citrus Grandis (Grapefruit) Peel Extract, Citrus Tangerina (Tangerine) Peel Oil, Calendula Officinalis Flower Extract, Citrus Limon (Lemon) Peel Oil, Sodium Phytate, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Polysorbate 60, Sorbitan Isostearate, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate

Guru Score

66%

Mixed

4 experts · Moderate agreement

What the gurus are saying

Gentle or spicy? Gurus split on this 10% niacinamide serum. Fans find it water-based, nearly imperceptible and good for redness, while sensitive, rosacea-prone skin tolerated it only about three nights a week, and not with tretinoin on top. Oily, tougher skin looks like the sweet spot, and the scent draws a rough comparison to toilet bowl cleaner. Starting with a few nights a week is a safer way in.

Synthesized from 4 expert reviews · most recent take June 2026

What they liked

Lightweight, water-based texture absorbs quickly
Helps with redness and visible pores
Non-stripping for oily skin

What they flagged

Clashes with tretinoin for some people

Type

SerumsDrops & dropper

Key actives

Niacinamide

Formula notes

Fragrance-freeNo drying alcohol

Where to buy

Sephora → Ulta → Amazon → Google →

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Scan it in the shopFree iPhone app. Scores in the aisle.

What the experts use it for.

The concerns the experts tie this product to, in their own words. Paid and founder takes don't count.

Clogged or visible pores2 experts

“It was made [...] to help combat the breakouts but also the redness that she was experiencing and the pore size that she was experiencing.”

Caroline Hirons, watch at 1:38

Breakouts and acne1 expert

“It was made [...] to help combat the breakouts but also the redness that she was experiencing and the pore size that she was experiencing.”

Caroline Hirons, watch at 1:38

Excess oil and shine1 expert

“So it could be okay for somebody with a little bit more oily skin, but though I'm oily, I was more sensitive.”

Dr. Aleksandra Brown, watch at 11:17

Redness1 expert

“It really helps with my diffuse redness, that surface redness.”

Caroline Hirons, watch at 5:20

What the gurus are saying.

Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.

All takes Yay takes Nay takes Mixed takes Hide sponsored

Dr. Aleksandra Brown

153k subs

~Mixed

"Sunday Riley B3 Nice 10% Niacinamide Serum is really nice. I finished the whole bottle myself, though it can be spicy if you have really sensitive skin. I couldn't tolerate it more than like three nights a week."

All 3 takes from Dr. Aleksandra Brown

Adult Acne in Your 40s? A Dermatologist Explains Perimenopause Breakouts

"I did use this, I did finish the whole bottle, but I had to minimize my use to about three nights a week, and I did not really tolerate it with my tretinoin on top. So, this for me was not ideal. My skin is however very sensitive and I do have rosacea, but if you're somebody with oily tolerant skin, this is a really good one to add into your routine. The key ingredients are 10% niacinamide, trans-resveratrol, and squalane."

Niacinamide: Does It Really Work? Dermatologist Explains the Hype, Benefits & Best Products

"But I could not use it every single day. It claims to help improve size in the appearance of the pores or help uneven the skin tone. I did notice some of that though I don't think you can really change the size of your pores. [...] It does balance the complexion without stripping or irritating. So it could be okay for somebody with a little bit more oily skin, but though I'm oily, I was more sensitive. And I could not use this every morning."

Best Anti-Aging Ingredients Ranked by a Dermatologist

No BS Beauty

89k subs

~Nay

"The Sunday Riley one definitely has a scent to me that smells like toilet bowl cleaner and I don't know why that's just what it smells like"

Nipun Kapur

413k subs

~Yay

"I have been loving the Sunday Riley B3 Nice niacinamide serum. It has niacinamide 10 and also resveratrol which is a fabulous antioxidant which also has great anti-aging benefits. [...] If you're looking at something which is more of a hybrid formula with great ingredients to boost up your anti-aging efforts, I do recommend the one from Sunday Riley. This product is definitely not under 500 but it is very very effective."

All 3 takes from Nipun Kapur

Get an overnight facial | How to get Korean Glass Skin | Glass Skin Routine

"The new niacinamide serum that I'm testing is by Sunday Riley, the B3 Nice [...] 10% Niacinamide Serum. I got this recently to test out. The product is liquidy, not as thick as the La Roche Posay one, but it's kind of thick. I'll give it about a minute to dry out on my skin so that all the products are well absorbed."

How To Get Glass Skin | The Morning Routine For Anti Aging

"For the daytime I'm using this one, this is the B3 Nice, this is the Sunday Riley 10% niacinamide serum, and it is really really gentle. [...] I absolutely love it, it is completely water-based, and it goes in really really well."

Best Niacinamide Serum for Beginners | Best serum for open pores & blackheads sebaceous filaments

Caroline Hirons

250k subs

~Yay

"It's basically imperceptible, it disappears. It's great for the summer. [...] It really helps with my diffuse redness, that's surface redness. I recommend it [...] for all age groups and all skin types. It was originally formulated for my daughter who has oily acne prone skin, but we're finding that a lot of our clients who are reaching for it, they're reaching for it for redness, pore size, and then they've heard of niacinamide and they want to try it."

What the evidence says.

Independent of what the gurus think, this is what the published research supports about the main active ingredients here.

Niacinamide

Niacinamide has evidence behind it for redness, uneven tone and supporting the skin barrier, and it is usually well tolerated even by skin that reacts to most things.

Source: DermNet

Frequently asked.

What is Sunday Riley B3 Nice 10% Niacinamide Serum?

A water-based serum with 10% niacinamide, trans-resveratrol and squalane, designed to help even skin tone and improve the look of pores.

Is Sunday Riley B3 Nice 10% Niacinamide Serum worth it?

The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 66%.

What is Sunday Riley B3 Nice 10% Niacinamide Serum's Guru Score?

Sunday Riley B3 Nice 10% Niacinamide Serum holds a Guru Score of 66%. That is our read on how warmly the experts talk about it, based on the verdicts of 4 expert reviewers we have collected.

What is Sunday Riley B3 Nice 10% Niacinamide Serum good for, according to the experts?

In their reviews, experts say Sunday Riley B3 Nice 10% Niacinamide Serum is good for clogged or visible pores (2 experts), breakouts and acne (1 expert), excess oil and shine (1 expert) and redness (1 expert).

Is Sunday Riley B3 Nice 10% Niacinamide Serum good for clogged or visible pores?

2 experts who reviewed Sunday Riley B3 Nice 10% Niacinamide Serum say it is. Caroline Hirons put it this way: “It was made [...] to help combat the breakouts but also the redness that she was experiencing and the pore size that she was experiencing.”

Sunday Riley B3 Nice 10% Niacinamide Serum.

66%

What the experts use it for.

Clogged or visible pores2 experts

Breakouts and acne1 expert

Excess oil and shine1 expert

Redness1 expert

What the gurus are saying.

What the evidence says.

Niacinamide

Frequently asked.

What is Sunday Riley B3 Nice 10% Niacinamide Serum?

Is Sunday Riley B3 Nice 10% Niacinamide Serum worth it?

What is Sunday Riley B3 Nice 10% Niacinamide Serum's Guru Score?

What is Sunday Riley B3 Nice 10% Niacinamide Serum good for, according to the experts?

Is Sunday Riley B3 Nice 10% Niacinamide Serum good for clogged or visible pores?

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