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Niacinamide is the vibrant ingredient of the moment—and with good reason. But it doesn’t have to be in literally every single product. Niacinamide in concealer? Uh, you can pass. But in a leave-on skin serum? Yes, please! Say hello to Sunday Riley B3 Nice 10% Niacinamide Serum. The brand new product from the iconic brand has just hit Sephora shelves and is already making waves.
Before we dive into how the B3 Nice 10% Niacinamide Serum stands out from the crowd of niacinamide-fortified products, let’s first remind you what makes the ingredient so great. It’s a form of vitamin B3 that can work wonders for all skin types, even sensitive ones. It does So many things, it’s hard to choose a favorite. Those with oily and/or acne-prone skin love the way it reduces the appearance of pores, controls excess oil, and reduces inflammation and redness. That makes it especially good for people with skin conditions like eczema and rosacea.

Sunday Riley.
And that’s not all. Fans of niacinamide swear by its lightening properties that reduce hyperpigmentation and acne spots. It’s even an anti-aging powerhouse, helping diminish the look of fine lines, wrinkles and age spots and boosting collagen production. Okay, what can’t it?!
According to the brand, Sunday actually created this product for her 14-year-old daughter India, who struggles with acne. Her skin issues hurt her self-esteem, so she created a serum that anyone could use, including India. The name B3 Nice was inspired by the negative things people say to people with skin conditions.

Sunday Riley.
The most common percentage for Niacinimade is 4-6 percent, but Sunday Riley’s new serum clocks in at a whopping 10 percent. To be honest, I was afraid of the higher percentage at first because it can be irritating on sensitive skin. Luckily, Sunday Riley also added what they call “Brightenyl,” a “bioengineered molecule” that’s activated by the skin’s microbiome to brighten the skin’s overall appearance and reduce signs of sensitivity like redness. There’s also trans-resveratrol, a powerful antioxidant, and boswellia serrata (Indian frankincense), curcuminoids, madecassosides, and asiaticosides to calm breakouts and support natural collagen production.
I have fairly sensitive skin so I started with a small amount every other day. After about a month I noticed fewer hormonal flare-ups and less fatigue in general. I will be asking for help everyday to reduce some of those dark spots around 30 I’m suddenly having. I waited until I knew for sure, but I’m happy to say I didn’t notice any increased sensitivity or redness. Success! The brand says you can use it every day, especially if your skin isn’t as dry and sensitive as mine.
Don’t forget to use a good moisturizer on the days you use B3 Nice 10% Niacinamide Serum, especially if you add other active ingredients to the mix. (But no more niacinamide, please!) And grab your Sephora now for what’s sure to be a new favorite.