Ingredient guide

What is niacinamide?

Niacinamide (vitamin B3) is one of the most versatile and well-documented ingredients in modern skincare — and one of the gentlest. Here's an honest look at what it actually does, who it's for, and how to use it right.

In short: Niacinamide calms redness, strengthens the skin barrier, regulates oil and evens out skin tone. It's gentle enough for most people, plays well with other ingredients, and suits oily, dry and sensitive skin alike.

What does niacinamide do to the skin?

Niacinamide is a form of vitamin B3 that the skin can use directly. It works in several ways at once, which is exactly why it's so popular:

Strengthens the skin barrier: It boosts the skin's own production of ceramides — the lipids that hold moisture in and keep irritants out. A stronger barrier means less dryness and less reactivity.
Calms redness and inflammation: Niacinamide has a soothing effect that makes it great for redness, blemishes and generally reactive skin.
Regulates oil: For oily and combination skin it can help balance oil production, which over time can mean less shine and fewer clogged pores.
Evens out skin tone: It can fade dark spots and pigmentation by slowing the transfer of pigment to skin cells.

Niacinamide boosts the skin's own ceramide production — the "mortar" that keeps the barrier sealed.

Who is niacinamide for?

Short answer: almost everyone. Because it's so gentle and versatile, niacinamide is one of the safest steps to add to a routine.

Especially good if you have:

Oily or combination skin that gets shiny through the day
Redness or reactive, easily-irritated skin
Uneven skin tone or dark spots after blemishes
A weakened skin barrier (tight, dry, sore skin)

How do you use niacinamide?

Niacinamide is uncomplicated — one reason it's so loved:

When: Morning, evening, or both. It isn't broken down by sunlight, so it's safe during the day.
Concentration: Most serums are 5–10%. Higher isn't necessarily better — very high concentrations can cause slight irritation in some people without extra benefit.
Order: After cleansing and any toner, before your heavier moisturizer.

Can niacinamide be combined with other ingredients?

Yes — this is one of niacinamide's strengths. It's a "team player" that works well with most, including retinol, hyaluronic acid and acids. The old myth that niacinamide and vitamin C "cancel each other out" has effectively been debunked for modern, stable formulations — they can safely be used together.

What does the research say? Niacinamide is among the best-documented skincare ingredients. Studies show effects on the skin barrier, oil production and pigmentation. It's also considered safe to use during pregnancy — but always consult a doctor if unsure.

Source: research review published in the National Library of Medicine (PMC8389214).

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Sources

National Library of Medicine (PMC8389214): review of niacinamide's effects on the skin barrier, pigmentation and oil production.

This guide provides general information about skincare ingredients, not medical advice. For skin conditions, pregnancy or uncertainty: consult a doctor or dermatologist. Always introduce one new product at a time and do a patch test first.