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Niacinamide is one of the most-researched skincare actives, typically formulated at 2% to 10%. Isntree's Hyper Niacinamide 20 Serum pushes to 20%, which is an aggressive concentration designed for users with persistent pigmentation, enlarged pores, or texture concerns that haven't responded to lower-dose niacinamide. It's not a beginner product.
At $16.79 for 20ml, the per-ml price is reasonable given the concentration. The small bottle size suggests use as a targeted treatment rather than whole-face daily spread.
20% niacinamide addresses pigmentation, oil regulation, pore appearance, and barrier support. At this concentration, results are faster and more dramatic than 5 to 10% formulations, but irritation risk is higher. Use as targeted treatment or buffered with moisturizer.
After toner. Apply 2 to 3 drops across face or target areas. Buffer with moisturizer if irritation. Use AM or PM. Always SPF in AM.
For sensitive skin, probably. For niacinamide-experienced users, 20% delivers faster results.
Some users experience temporary flushing at high doses. Reduce if persistent.
Yes, modern formulations layer without issue. Apply separately, not mixed in hand.
Oil control: 1 to 2 weeks. Pigmentation: 4 to 8 weeks.
Niacinamide is pregnancy-compatible.
Browse the full Isntree collection or Korean serums.
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