Niacinamide
烟酰胺
Also known as: Vitamin B3, Nicotinamide
What it does
- Brightening and evening skin tone
- Reducing sebum production and pore appearance
- Strengthening skin barrier function
- Anti-inflammatory effects
- Improving skin texture
Effective concentration
Minimum 2% Optimal 4-5% Maximum Beneficial 10%
Higher concentrations (>10%) may cause flushing without additional benefit. 5% is optimal for most people.
Evidence
Strong evidenceExtensively studied with multiple RCTs supporting efficacy for hyperpigmentation, oil control, and barrier repair.
Skin types
Well suited for: Oily Combination Normal Dry
Well-tolerated by most skin types including sensitive skin.
Helps with
Dark Spots & Hyperpigmentation Acne & Breakouts Aging & Fine Lines Dullness Large Pores
Interactions
Note L-Ascorbic Acid
Old myth they cancel out. Modern research shows they can be used together safely.
Irritation potential
Low
Comedogenic rating
0 / 5
Pregnancy
Generally considered safe during pregnancy
Considered safe during pregnancy.
Good to know
One of the most versatile and well-researched skincare actives. Great for beginners.
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Analyze a productEducational information only — not medical advice. Always patch test and consult a dermatologist for skin concerns.