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↗ Lab notes · Last reviewed May 2026
Niacinamide, simplified.
INCI · Niacinamide (Vitamin B3)
Niacinamide is the dark-circle workhorse: it inhibits melanin transfer, strengthens the skin barrier, and plays well with every other active in your routine.
What it does
Benefits
- Inhibits melanosome transfer (fades pigmentation over weeks)
- Strengthens skin barrier function
- Reduces redness and inflammation
- Compatible with retinoids, vitamin C, acids — no layering conflicts
What to watch
Cautions
- Excellent tolerance even on sensitive skin
- Concentrations above 10% can cause flushing in rare cases
↗ The evidence
What the science says
Hakozaki et al. (2002) and many subsequent studies show 2-5% niacinamide reduces hyperpigmentation. Consistent daily use over 8-12 weeks is required for visible change.
Niacinamide is the slow-burn ingredient. Unlike caffeine (instant depuff that fades) or PDRN (week-by-week renewal), niacinamide works on melanin over months. If your dark circles are pigmentation-driven — which most are — niacinamide is non-negotiable.
Patches with Niacinamide
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