Shrinks pores, controls oil, fades dark spots, strengthens barrier. One ingredient. No catch.
The complete guide: what concentration to use, what to pair it with, what to never combine it with.
What niacinamide actually does
Niacinamide (vitamin B3) is the closest thing to a miracle ingredient in skincare. At 2-5% concentration, it regulates sebum production, shrinks the appearance of pores, and inhibits melanin transfer to reduce dark spots. At 10%, it's an aggressive brightener — but can cause irritation in sensitive skin.
Proven benefits (clinical studies):
- Reduces sebum production by up to 35% in 4 weeks
- Shrinks pore appearance by 20-30% in 8 weeks
- Fades hyperpigmentation comparable to 4% hydroquinone (but safer)
- Strengthens skin barrier by boosting ceramide production
What to combine with niacinamide
Perfect pairs:
- Hyaluronic acid — hydration + oil control
- Centella asiatica — calming + barrier support
- Zinc PCA — enhanced oil control
- Propolis — healing + brightening (this is why the Beauty of Joseon serum works so well)
What NOT to combine
The old myth about niacinamide + vitamin C causing flushing has been debunked. They're fine together in modern formulations. The real conflict: niacinamide at high concentrations (10%+) combined with low-pH actives like AHA/BHA can reduce effectiveness. Use them at different times of day.
Best niacinamide products
Glow Serum: Propolis + Niacinamide
$17Propolis heals + niacinamide brightens — visible glow in 2 weeks
Galactomyces 95 Tone Balancing Essence
$2495% fermented galactomyces brightens and evens tone from within