Niacinamide (Vitamin B3)

INCI NAME: Niacinamide

Niacinamide (nicaninamide) is the active form of vitamin B3 used in skincare as a barrier‑supporting, tone‑refining ingredient. Brand and retailer education describe it as a “cell‑communicating” vitamin: it helps skin function more normally, including supporting the production of key barrier lipids (ceramides and fatty acids). That’s why consistent use is often linked to skin that feels less dry, more resilient, and less easily irritated.

Niacinamide is also used for visible refinement—helping reduce the look of enlarged pores, uneven tone, and blotchiness. It can suit oil‑prone skin by balancing the appearance of surface oil and shine without the sting some acids cause. Because it’s water‑soluble and generally well‑tolerated, it appears in many formats (serums, moisturizers, toners, and SPFs).

Results are typically gradual. Many formulas use ~2–5% for daily benefits; higher percentages may target oil/texture, but aren’t automatically better if they trigger sensitivity. With consistent use (and sunscreen), niacinamide supports a smoother, more even‑looking complexion and a stronger‑feeling barrier over time.

Niacinamide (Vitamin B3) benefits:

  • Strengthens the skin barrier
  • Helps reduce the look of enlarged pores
  • Balances visible oil and shine
  • Improves the look of uneven tone and blotchiness
  • Supports smoother texture
  • Antioxidant support for stressed skin

Niacinamide (Vitamin B3) is best for:

  • All skin types
  • Oily and combination skin
  • Enlarged pores and shine
  • Uneven tone/discoloration
  • Compromised barrier and dryness
  • Sensitive or redness‑prone skin

Aliased with:

  • Niacinamide
  • Nicotinamide
  • Vitamin B3

Cautions:

Niacinamide is generally well tolerated, but very sensitive skin can react to high percentages or to formulas with multiple actives. Introduce gradually and patch test if you’re reactive. A brief warm or flushed feeling can happen for some people, especially if a product’s formula isn’t well balanced—stop use if stinging persists. It pairs well with most ingredients; if you’re using strong acids or pure L‑ascorbic acid and your skin is easily irritated, alternate applications to keep the routine comfortable.