Sunday Riley

B3 Nice 10% Niacinamide Serum.

Name: Sunday Riley B3 Nice 10% Niacinamide Serum
Brand: Sunday Riley
Rating: 75.0 (2 reviews)

Serums

About this product

A lightweight, water-based serum containing 10% niacinamide designed to balance oily skin, minimize pores, reduce redness, and improve uneven skin tone.

Best for

Oily skinAcne-prone skin

Serums

The Guru Index verdict

75%

Approved

✓Approved · 75%

2Reviewers

1Approved

1Mixed

0Skip

What the gurus are saying

Gurus overwhelmingly praise this serum for its lightweight texture, fast absorption, and effectiveness on redness and oily skin. It works well across age groups and skin types when applied early in the routine. The main caveat: the 10% niacinamide concentration is potent and may irritate sensitive skin or conflict with active treatments like tretinoin, requiring reduced frequency or skipping entirely for some users.

Synthesized from 2 expert reviews

Key actives & flags

NiacinamideFragrance-freeAlcohol-free

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

Where to buy

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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.

All takes Approved only Skip only Mixed only Hide sponsored

Dr. Aleksandra Brown

104k subs · 4k devotees

~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 · 9k devotees

✓Approved

"B3 Nice is a niacinamide product. This is something I originally formulated for my daughter who has pretty severe acne prone skin. It was made to help combat the breakouts but also the redness that she was experiencing and the pore size that she was experiencing. Niacinamide is great because it's got these great anti-inflammatory benefits."

All 5 takes from Caroline Hirons

5 Minutes With Sunday Riley - The New B3 Nice 10% Niacinamide Serum

"What I like about this one is it's a water-based serum, so it goes into the skin quickly. If you have oily skin, absolutely not a problem. It doesn't kind of weigh your skin down so you can keep adding on other stuff. It's basically imperceptible, it disappears, and it's great for the summer. For me, I have very fair skin so I always get diffuse redness, and 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 in the beginning of the routine."

5 Minutes With Sunday Riley - The New B3 Nice 10% Niacinamide Serum

"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."

5 Minutes With Sunday Riley - The New B3 Nice 10% Niacinamide Serum

"What's good about this is it doesn't kind of weigh your skin down so you can keep adding on the other stuff. 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. I'd put it in 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. There are no contraindications, nothing you shouldn't use it with. It's just so easy, super good."

5 Minutes With Sunday Riley - The New B3 Nice 10% Niacinamide Serum

"It's perfect for teenage acne-prone skin and anyone who suffers from too much oil because it just disappears. For me, I have very fair skin so I always get diffuse redness, and this is my go-to. It really helps with my diffuse redness, that 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. It's a water-based serum, so I'd put it at the beginning of the routine. If you put it on after your moisturizer it's just not going to get in as easily. This is just so easy, it's super good."

B3 Nice 10% Niacinamide Serum.

75%

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