Discover the 10 best dermatologist-recommended niacinamide serums for brighter, calmer, and smoother skin. All were rigorously tested, and these are our top picks to combat dullness, oiliness, and ...

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Testing this year’s crop of skin care winners made us feel like we’d accidentally taken The Substance — in a good way. Looking in the mirror after slathering on the myriad of lotions and potions, we ...