Ingredients › NiacinamideBuilt from Airtable · 14 sections
  • Ingredient
  • Vitamin B3 · Over the counter

Niacinamide

The gentle all-rounder. A form of vitamin B3 that strengthens the skin barrier, softens dark spots and calms oil and redness.

Key Facts

Niacinamide at a glance.

B3

A water-soluble form of vitamin B3.

2–5%

The strengths used in most studies.

4–8 wks

To notice less oil and redness.

All skin

Well tolerated by most skin types.

What Is It?

A vitamin your skin already uses.

Your skin cells turn niacinamide into NAD+, which they need for energy and repair. Applied to skin, it helps cells build ceramides — the fats that hold the barrier together.

The molecule

Size

122 Da · very small

Dissolves in

Water

Also called

Nicotinamide

Stable in

Light and air

Often Used For

What it’s good at.

Oily skin & pores

Moderate

2% reduced oil in studies.

Dark spots

Moderate

5% lightened spots over 8 weeks.

Acne

Moderate

4% gel similar to 1% clindamycin.

Dry, weak barrier

Moderate

Boosts ceramides.

Rosacea

Limited

Calming in small studies.

Fine lines

Limited

Modest smoothing at 5%.

How It Works · Interactive

Small enough to slip right in.

  1. A thin layer sits on the surface.

  2. Tiny and water-loving, it passes the outer layer easily.

  3. Cells make more ceramides; water stays in.

    Barrier repair

  4. It slows pigment transfer to skin cells.

    Hyperpigmentation

  5. Inflammation and oil production drop.

How easily it gets inEasily
How deep it reachesSurface
SurfaceBarrierEpidermisDermis

Forms & Strengths

More isn’t always better.

  • 2%Sensitive skin, oil · Moisturizer
  • 4%Acne · Gel
  • 5%Dark spots, aging · Serum
  • 10%Common in serums · Serum

Highlighted: the strength most people start with.

Serum

Most concentrated.

Moisturizer

Easiest way in.

Sunscreen

Daytime bonus.

Cleanser

Rinsed off — least benefit.

Safety & Side Effects

One of the gentlest actives.

  • Redness or stingingMostly at 10%+. Lower the strength.Uncommon
  • Pilling under makeupUse less; let it dry.Uncommon
  • BreakoutsUsually the base formula.Rare
  • Allergic reactionStop and see a doctor.Rare

Tip. Considered safe in pregnancy and breastfeeding.

How to Use It

Four steps, once or twice a day.

  1. 1

    Cleanse

    Gentle cleanser; pat dry.

  2. 2

    Apply 2–3 drops

    Over the whole face.

  3. 3

    Moisturize

    Once the serum has dried.

  4. 4

    SPF in the morning

    Essential for dark spots.

Tip. New to actives? Patch test on your jaw for 3 nights.

Pairing With Other Ingredients

Plays well with almost everything.

Yes

Retinoids

Helps offset retinoid dryness.

Yes

Hyaluronic acid

Hydration plus barrier repair.

Yes

Sunscreen

Protects your results.

Yes

Vitamin C

Fine together; the old myth is outdated.

Yes

Benzoyl peroxide

A solid acne team.

Careful

AHAs & BHAs

May sting; alternate nights.

Results & What to Expect

Patience pays off.

  1. 1

    Week 2

    Skin feels more comfortable.

  2. 2

    Week 4

    Less shine and calmer redness.

  3. 3

    Week 8

    Dark spots start to fade.

  4. 4

    Week 12

    Smoother, more even tone.

Alternatives

Not the right fit? Try this instead.

If…

it stings or feels warm

CeramidesOTC

If…

dark spots are your main goal

Azelaic acidRx

If…

acne isn’t improving

If…

you want anti-aging results

RetinolOTC

Common Questions

What patients ask us.

Can I use niacinamide with vitamin C?

Yes. Modern formulas are fine together.

Is 10% better than 5%?

Not necessarily. Most studies used 2–5%.

Can it shrink pores?

It can make them look smaller by reducing oil.

Morning or night?

Either, or both.

Keep reading

Derma

Pedia

The science-based skin encyclopedia.

IngredientsRetinolVitamin CNiacinamideHyaluronic acidView all →
ConditionsAcneEczemaRosaceaDandruffView all →
MedicationsIsotretinoinDoxycyclineSpironolactoneMinoxidilView all →
CosmeticsBotoxDermal fillersChemical peelMicroneedlingView all →

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Dermapedia is for education only and is not medical advice. It does not create a doctor–patient relationship. Always consult a qualified clinician about your own skin.