Niacinamide

Also known as: Vitamin B3, nicotinamide

What Is Niacinamide?

Niacinamide, also called nicotinamide, is a water-soluble form of vitamin B3. It is stable in most formulas and comfortable at low to moderate concentrations, which is one reason it has become one of the most popular actives in both Korean and Western skincare.

Its benefits come from several directions. Niacinamide supports the skin's own production of barrier lipids, including ceramides, which helps with hydration and resilience. It is associated with more balanced oil production and a refined look of large pores. It also helps reduce the transfer of pigment to surface skin cells, which over time can soften the look of dark spots and uneven tone.

Because it works across so many concerns, niacinamide is a good all-rounder, especially for combination skin that is oily in some areas and sensitive in others.

Niacinamide Benefits for Skin

• Supports a stronger, better-hydrated skin barrier.
• Helps balance oil and refine the look of pores.
• Helps even out skin tone and fade the look of dark spots over time.
• Calms the look of redness and blotchiness.
• Well tolerated by most skin types, including sensitive skin.

How to Use Niacinamide

Apply a niacinamide serum after cleansing and toning, before moisturizer, morning or night. Many people do well with moderate concentrations, and very high percentages are not necessary for most results. It can be layered with hyaluronic acid and works alongside retinol.

An old worry suggested niacinamide and vitamin C cancel each other out. Modern formulas make this largely a non-issue, as explained in niacinamide vs vitamin C.

Side Effects & Precautions

Niacinamide is gentle for most people, but higher concentrations can cause temporary redness, flushing or a tingling sensation in sensitive skin. If that happens, switch to a lower-strength product or use it every other day. Pilling can occur when layered with certain silicone-heavy products.

Niacinamide is a steady, gradual ingredient. Oil and texture changes may show within a few weeks, while tone changes usually take longer. It will not shrink pores permanently, since pore size is largely genetic, but it can make them look less obvious when skin is less oily and better hydrated. If you are using several products, check how many already contain niacinamide, since stacking multiple high-strength formulas is a common reason people suddenly experience redness. One well-formulated niacinamide product is usually enough for the whole routine.