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Ever find yourself spiraling down a skincare rabbit hole at 11:47 p.m., tabs open, credit card in hand, trying to figure out which is actually the best niacinamide serum? Same.

I’ve been testing, rotating, and re-testing niacinamide formulas for more than 5 years — smoothing them on right after cleansing, pairing them with retinol, layering them under SPF and stress-testing them through breakouts, dry spells and chaotic travel skin.

As a beauty tester, I don’t just sample products — I live with them in my bathroom. There are only so many that can fit in my serums stockpile, so you know if it made the cut here, it’s worth buying.

The hype, to be fair, is deserved. Niacinamide serum benefits read like a greatest-hits list: minimizes the look of pores, reins in excess oil, brightens uneven tone, softens fine lines, strengthens the skin barrier. It’s vitamin B3 doing the absolute most — and dermatologists recommend it.

“Niacinamide is sort of a do-it-all type of ingredient, which makes it a great addition to most skincare products,” Adarsh Vijay Mudgil, MD, a dual board-certified dermatologist and founder of NYC’s Mudgil Dermatology PC, told Post Wanted.

What makes it a staple is the range of niacinamide serum uses. Oily T-zone by noon? It helps balance things out. Post-acne marks lingering for months? It can visibly even the playing field. Skin feeling irritated after you got a little too confident with exfoliating acids? Niacinamide steps in as the peacekeeper.

I’ve used it as a buffer before stronger actives, as a daily brightener and as a back-to-basics reset when my barrier needed a break. Few ingredients play this well with others, and ahead you’ll find the crème de la crème.

What’s more, a few expert-backed FAQs simply explain how to use niacinamide serums, what benefits you can confer with the superstar B ingredient, when to use niacinamide serum and more.

I’ll be honest — when a serum earns permanent residency on my bathroom shelf, that’s not a casual decision. I only have room for two brands at a time in my primary bathroom, and Alpyn sits there comfortably next to Anua like it paid rent.

The Alpyn Niacinamide & Nettle Firming Serum has become that reliable middle step my dry, sensitive skin genuinely craves. It glides on silky and light but somehow still feels nourishing, sinking in quickly and leaving behind that subtle bounce that makes you double-take in the mirror. It’s not flashy. It’s not trendy. It just works.

Ingredient-wise, this serum hits that sweet spot between gentle and effective. Niacinamide helps smooth texture and even tone without irritating my reactive skin. Wild nettle brings soothing hydration and a sort of comforting softness that feels tailor-made for dryness. Rambutan extract adds that subtle firming, slightly plumped look that makes your skin appear more awake. The formula feels thoughtful — hydrating but never heavy, active but never aggressive.

After years of consistent use, my skin looks calmer, more even and just generally healthier — which, to me, is the ultimate goal.

What keeps me loyal, though, goes beyond the texture. Founder Kendra Kolb Butler built Alpyn around a philosophy that feels refreshingly intentional: she wild-crafts ingredients in Jackson Hole, harvesting hardy mountain plants that have learned to survive (and thrive) in extreme alpine conditions. Then she pairs those resilient botanicals with clinical actives that dermatologists respect. I love that balance.

It’s not “all natural” for the sake of marketing, and it’s not cold, lab-only skincare either. It’s plants and science in conversation with each other — formulated specifically so dry, sensitive skin can flourish the way those alpine plants do in tough environments.

I will say that the dispenser can be a little temperamental. Occasionally, it needs a few pumps to get going, almost like it’s waking up slowly in the morning. Once it starts flowing, it’s perfectly fine, so it’s hardly a dealbreaker — just a tiny quirk worth mentioning. In the grand scheme of things, it’s a small trade-off for a serum that consistently makes my skin feel supported, balanced and resilient.

Size: 1 ounce | Key ingredients: Niacinamide, Nettle Extract, Rambutan | Skin type: Sensitive, Dry, Mature

Known for its no-frills, ingredients-and-that ‘s-it approach, The Ordinary has phenomenal budget serums that do the job of improving your skin in whatever benefit you’re seeking. For an accessible price point, it’s a no-frills (yet effective) product I love to layer atop my skin for much-needed suppleness following my cleanser.

“I’m a big fan of the brand The Ordinary and was eager to try its Niacinamide 10% + Zinc 1% serum,” Holly J Coley, commerce deputy editor, shared after testing the product. “The active ingredient is already in my favorite SPF, but I was curious if using an actual serum would bring any improvements. I found this product had a silky texture and absorbed quickly, though not as quickly as some of my other water-based products. If I applied too much, it slightly foamed.”

The upside is that it didn’t leave a film or residue or cause her next layer of products to pill. “It had no icky fragrance — a characteristic in some skincare I absolutely hate,” Coley added. “I didn’t see a huge difference, but I do love how affordable the serum is and the simple ingredient list.”

“The combination of zinc with niacinamide makes this a true skin-calming agent.” Dr. Mariwalla chimes in. “It’s great for people with redness or skin sensitivity who are also looking to make their pores smaller but can’t tolerate a retinoid.”

Size: 1 ounce | Key ingredients: Niacinamide, Zinc | Skin Type: Oily

The TIRTIR Niacinamide 20% Serum is a godsend for acne-prone skin. Even if you don’t experience regular blemishes, it works wonders for the occasional red spots and pesky pimples that rear their ugly heads. It’s also the best Korean niacinamide serum I’ve tested.

For one, this serum contains retinol which is excellent at helping to absorb excess oil. It leaves my skin refreshed, well-balanced and even brighter than before. A catalyst for doing so is the 2% Alpha Arbutin and Glutathione in its ingredient list, the dynamic duo that inhibits melanin production, helps fade blemishes and enhance that radiance we all love and crave.

This Korean beauty brand has been one of my favorites for a while, and it is fairly priced. Seriously, for only $25, it measures up to some high-end serums I’ve been dispensing onto my skin.

Size: 1.01 ounces | Key ingredients: Niacinamide, Retinol, Glutathione | Skin Type: Oily, Mature

After trying Glow Recipe’s Niacinamide Dew Drops, I’m not at all surprised this TikTok favorite made the cut as far as niacinamide serums go. It’s a lovely product for helping treat dark spots as watermelon, the star of the show, contains vitamins A and C to help visibly brighten the skin.

“Glow Recipe has some ardent fans and I like this formulation as a great hydrator but also a skin brightener,” Mariwalla adds. “It has a wonderful fragrance which a lot of people love.” What’s more, Mudgil gives his stamp of approval to this formula because it contains hyaluronic acid for a “powerful punch.”

The Glow Recipe Watermelon Glow Niacinamide Dew Drops is a fairly priced serum that comes encased in beautiful packaging — though its formulation is just as much of a beaut. It’s the best niacinamide serum for brightening, and it feels like jelly (though it isn’t sticky), making it a top choice for those with dry skin.

Size: 1.35 ounces | Key ingredients: Niacinamide, Hyaluronic Acid, Watermelon | Skin Type: Dry

Glass skin, unlocked. The working power of the Anua Niacinamide 10 + TXA 4 Serum is unparalleled for redness. When trying to reverse the look of an unwanted flush, ceramides are great to look for. Niacinamide aside, this serum contains ceramides — as well as hyaluronic acid — to help cancel out redness and nourish the skin at the same time.

I love how this serum feels on the skin. It’s fast-absorbing, doesn’t feel greasy and is wholly elegant once dispensed onto my skin. It’s fairly priced as well and helps achieve that “glass skin” look that Korean beauty brands are best known for. That said, I’d rank it as the best Korean niacinamide serum money can buy.

I feel replenished each time I reach for this serum. Pretty pink bottle aside, it’s excellent for a myriad of concerns: redness, brightening, dull skin and excess sebum.

Size: 1.01 ounces | Key ingredients: Niacinamide, Hyaluronic Acid, Arbutin | Skin Type: Sensitive, Dry

“I’m no skincare expert, and this was my first experience using a niacinamide serum,” Miska Salemann, commerce writer/reporter, shared. “I have somewhat problematic, acne-prone skin and truly had no clue what to expect with adding another product. But I wanted to give niacinamide a shot as I’ve heard it works wonders for dry skin and is suitable for most skin types.”

She said that the formula is “very easy to use,” as it only requires a few drops before moisturizing. It takes about 30 seconds to absorb into the skin, too.

“The texture feels just a touch thicker than water, but it’s not gooey and completely clear, which buys a few points in my book,” Salemann added. “I could hardly remember it was on after a few minutes. It also did not affect how my makeup went on — more points. In terms of instant effects, I did notice my skin looking smoother and some minimization of the pores around my nose and forehead. The improvement in texture was most noticeable, but I also saw a bit more brightness in my skin tone after the first week.”

Additionally, it’s budget-friendly, has that invisible finish, and is deeply hydrating. The ultimate trifecta, basically.

Size: 1 ounce | Key ingredients: Niacinamide, Glycerin | Skin Type: Sensitive, Dry

OK, I reviewed the lion’s share of Glossier, and I must say — the Futuredew Facial Oil-Serum Hybrid is one of my favorites. It applies beautifully to my skin, is cruelty free and vegan (so especially apt for my sensitive skin and all the sensitive skin girlies out there) and is ultra-hydrating. What more can you ask for?

It’s packed with nourishing oils and powerful extracts, what the brand considers “your shortcut to a moisturized, dewy, glowing look that lasts.” Yes, this is true, and it’s also travel-friendly to stash into your bag when you need it.

Only two pumps is your ticket to more nourished skin. Each time I apply this product, specifically, I feel a difference — and, it’s less than $30.

Size: 1 ounce | Key ingredients: Niacinamide, Jojoba Oil, Squalane | Skin Type: Oily, Sensitive

Paula’s Choice isn’t just known for its top-of-the-line toners. The brand’s Clinical Niacinamide Treatment has a whopping 20% niacinamide count, which is approved by both of our dermatologists. Not only that, but it’s one of my favorites to use at night as it’s (1) more potent and (2) feels nourishing before catching those ZZZs.

“This is a highly concentrated niacinamide product which also contains vitamin C,” Mudgil highlights. “This combo is good for evening out skin tone, texture and pore size.”

Plus, Mariwalla says the serum itself has a “pretty silky feeling.” Just half of the dropper will be enough to coat the face and the neck daily, she advises.

For more sensitive options that are keen on anti-aging, check out my review of the best bakuchiol serums.

Size: 0.67 ounce | Key ingredients: Niacinamide, Vitamin C | Skin Type: Combination, Mature

Sunday Riley’s brand-new B3 Nice 10% Niacinamide Serum is the real deal, namely because it helps target redness, large pores and dark spots. What’s more, it’s cruelty free and is supercharged with trans-resveratrol to help soothe the skin and target the above problem areas.

Not only is the brand one of my all-time favorites for eye creams but this serum feels extremely high-end and helps balance my complexion well. I love how it easily absorbs as well and helps cancel out redness and blur pores. The results are near-instantaneous.

Size: 1 ounce | Key ingredients: Niacinamide, Trans-Resveratrol (for dark spots) | Skin Type: Mature, Oily

The Naturium Niacinamide Serum 12% Plus Zinc 2% is widely considered one of the best serums for improving skin texture due to its potent combination of niacinamide and zinc. This serum is one of the best I’ve tried for hydration, and it helped diminish the appearance of pores and smooth out rough patches of my skin.

This serum delivers a high concentration of niacinamide as well, which helps to brighten the complexion and even out skin tone, giving the skin a smoother and more refined appearance. It also aids in repairing the skin barrier, which is crucial for maintaining soft and healthy skin texture.

The addition of zinc enhances the formula’s ability to improve skin texture by balancing oil production and reducing inflammation, too. Zinc is known for its anti-inflammatory properties, which help to calm irritated or acne-prone skin. When skin is inflamed, it can lead to an uneven texture, with bumps and rough patches. That said, zinc helps prevent these breakouts and reduces redness, and I’ve noticed my skin having better texture and reduced redness. For less than $20, it’s a rockstar product.

Size: 1 ounce | Key ingredients: Niacinamide, Zinc Skin Type: Mature, Dry

In reviewing the best niacinamide serums for 5 years, here are the following testing criteria I kept in mind for each formulation:

Niacinamide — easily a skincare ingredient you’ve heard of in commercials and all over the web: one that’s good for you, one that dermatologists recommend. But, what is it, exactly?

“In a nutshell, niacinamide is a form of vitamin B3,” Mariwalla explains. “In serums and creams, it can be a stand-alone ingredient.”

Because niacinamide is a B vitamin, niacinamide serum uses come down to personal preference. It’s a multi-purpose ingredient that’ll help provide a litany of benefits to the skin and is recommended for every skin type.

The golden question of these nutrient-filled jellied serums. Niacinamide serum benefits are multi-layered (just like the formulation).

“It kind of does it all: reduces redness and inflammation in the skin, helps those who are acne/rosacea-prone and can even help with pore size and hyperpigmentation,” Mudgil notes.

Mariwalla echoes Mudgil, also adding that niacinamide helps to brighten the skin, decreases oiliness and can help in skin barrier repair for irritated skin.

According to Mariwalla, niacinamide can be applied daily and right after your cleanser and before your moisturizer and SPF. Since niacinamide takes root in creams as well, you can use a niacinamide serum and a niacinamide cream in your AM or PM routine.

This article was written by Victoria McDonnell, New York Post Commerce Journalist & Content Strategist, who has spent countless hours researching, testing hundreds of products and comparing the latest makeup, skincare, hair and beauty items and trends to determine what’s truly worth your hard-earned cash. She evaluates formulas, textures, ingredients and more, in addition to consulting medical and industry experts. Some of Victoria’s latest conquests include testing the best sheet masks on the market, and a rinse-and-repeat review of the best shampoos for all hair types and budgets. Victoria, who received a beauty industry essentials certification from the Fashion Institute of Technology, has been creating shopping guides for the New York Post since 2021 and previously held positions at Insider Reviews and CNN Underscored.