Niacinamide: What It Does and How to Use It

Niacinamide has quietly become one of the most popular skincare ingredients — and for good reason. Here's what it actually does and how to use it correctly.

What Niacinamide Is

Niacinamide is vitamin B3. It's water-soluble, stable, and works across all skin types including sensitive skin — making it one of the most universally useful skincare ingredients available.

What It Actually Does

• Reduces pore appearance (regulates sebum production)
• Fades dark spots and hyperpigmentation (inhibits melanin transfer)
• Strengthens the skin barrier (increases ceramide production)
• Reduces redness and inflammation
• Improves skin texture over time

The Right Concentration

2-5% for general use and sensitive skin. 10% for more targeted concerns (enlarged pores, hyperpigmentation). Start lower and build up.

Where It Fits in Your Routine

After cleansing and toning, before heavier creams and oils. Can be used AM and PM. Compatible with most other ingredients.

Can You Mix It With Vitamin C?

Old advice said no. Current research says yes — at stable formulations and normal use concentrations, mixing is fine. The 'niacinamide + vitamin C = niacin' concern is a myth at skincare-relevant concentrations.

Results Timeline

4-8 weeks for pore and texture improvements. 8-12 weeks for noticeable dark spot fading. Consistency is required.