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Niacinamide Benefits: What This Ingredient Actually Does

Few skincare ingredients are as universally useful — or as gentle — as niacinamide. This form of vitamin B3 shows up in serums, moisturizers, and treatments for good reason: it addresses oil, pores, tone, and barrier health all at once, and almost every skin type tolerates it. Here's what niacinamide actually does and how to use it. What is niacinamide? Niacinamide is a water-soluble form of vitamin B3. In skincare it acts as a multitasker: it supports the skin's natural repair processes, reinforces the barrier, and calms inflammation — all without the irritation that stronger actives can bring. That combination...