Sunday Riley

B3 Nice 10% Niacinamide Serum.

Serums

About this product

A lightweight, water-based niacinamide serum containing 10% niacinamide alongside trans-resveratrol and squalane, designed to balance oil, reduce visible pores, and even skin tone.

Best for

Oily skin Acne-prone skin

Type

SerumsDrops & dropper

Key actives

Niacinamide

Formula notes

Fragrance-freeNo drying alcohol

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

75%

Approved

Early verdict · Few reviews so far

2Gurus

1Approved

1Mixed

0Skip

What the gurus are saying

This serum's high niacinamide concentration means it works quickly on oily skin and redness, sinking in without heaviness, but people with sensitive skin or those already using tretinoin may need to dial back to just a few nights a week to avoid irritation. Those with tolerant, oily complexions will likely find it a strong addition to a morning or evening routine, best applied before moisturizer so it absorbs properly.

Synthesized from 2 expert reviews · most recent take June 2026

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How it works Independent by design. Every take comes from a creator we have no relationship with. We do not ask anyone to review, and affiliate links never move a score.

Every take, in full

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.

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Dr. Aleksandra Brown

131k 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 2 takes from Dr. Aleksandra Brown

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

"This is a really lightweight, water-based serum designed to target excess oil, visible pores, and uneven skin tone. It helps balance your complexion without stripping or irritating. It's pretty good for daily use, but due to really high concentration, not everyone's going to be able to tolerate it. 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."

Best Anti-Aging Ingredients Ranked by a Dermatologist

Caroline Hirons

251k subs

✓Approved

"What I like about this one is it's a water-based serum, so it goes into the skin quickly and if you have oily skin absolutely not a problem. It doesn't kind of weigh your skin down so you can keep adding on the other stuff. It's basically imperceptible, it disappears, and great for the summer. I have very fair skin so I always get diffuse redness, and it's my go-to. 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 are reaching for it for redness, pore size, and because they've heard of niacinamide and want to try it. I'd put it at the beginning of the routine simply because it's a water-based serum. If you put it on after your moisturizer it's just not going to get in as easily."

Common questions

Frequently asked.

What is Sunday Riley B3 Nice 10% Niacinamide Serum?

A lightweight, water-based niacinamide serum containing 10% niacinamide alongside trans-resveratrol and squalane, designed to balance oil, reduce visible pores, and even skin tone.

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

Mostly yes. 1 of the 2 gurus who reviewed it give it their stamp of approval, for a Guru Score of 75%.

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

Sunday Riley B3 Nice 10% Niacinamide Serum holds a Guru Score of 75%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 independent expert reviewers we have collected.