Niacinamide Serum: Benefits, How to Use & Who It's For

22 Jun, 2026
by CurePik

Niacinamide is one of the most popular and versatile actives in skincare — gentle enough for beginners, yet useful for oil control, marks and barrier health. Here's a clear, no-hype guide.

What is niacinamide?

Niacinamide is a form of vitamin B3. It's water-based, well tolerated by most skin types, and works on several concerns at once, which is why it appears in so many serums and moisturisers.

The main benefits

Controls oil & minimises pores: helps regulate sebum, so skin looks less shiny and pores appear smaller.
Fades dark spots: helps reduce the look of post-acne marks and uneven tone over time.
Strengthens the barrier: supports ceramide production, improving hydration and resilience.
Calms redness: soothing for sensitive, reactive and acne-prone skin.

What strength should you use?

Most serums use 5–12% niacinamide. 5% is plenty for sensitive or beginner skin; 10–12% suits oily, acne-prone skin and stubborn marks. Higher isn't always better — very high concentrations can irritate some people.

How to use it

Apply 2–3 drops to clean skin, morning and/or night, before moisturiser.
It layers well with most ingredients — hyaluronic acid, peptides, moisturisers and sunscreen.
Despite the old myth, niacinamide and vitamin C can be used together; if you're sensitive, simply use vitamin C in the morning and niacinamide at night.
Always follow daytime use with sunscreen.

Who it's for

Almost everyone — but it's especially useful for oily, acne-prone skin, those dealing with post-acne marks, and anyone wanting a gentle all-rounder to add to their routine.