A smiling young woman with clear, dewy skin holding a glass dropper and applying a clear serum to her cheek. Next to her, the words 'Niacinamide Serums' are written in a transparent, 3D water-bubble font against a soft pastel gradient background.
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Best Niacinamide Serum: Top 5 Based on User Reviews

Discover the best niacinamide serums of 2026. We rank the top 5 for hydration and barrier care based on real user reviews. Plus, tips on layering with retinol.