What Is Niacinamide?
Niacinamide is a form of vitamin B3 — a water-soluble nutrient your body needs for healthy cell function. In skincare, it's used topically because of the wide range of benefits it offers across nearly every skin type and concern.
The Benefits
Niacinamide has been studied for its ability to:
- Help regulate sebum (oil) production, which is especially useful for oily and combination skin
- Support the skin's barrier by encouraging ceramide production
- Even out the look of skin tone over time, including the appearance of dark spots
- Minimize the look of enlarged pores
- Calm redness and irritation — it's generally well-tolerated even by sensitive skin
- Provide antioxidant support against environmental stressors
How Much Do You Need?
Most niacinamide products are formulated between 2% and 10%, with 5% being a common sweet spot that balances effectiveness with tolerability. Higher concentrations (10%+) can occasionally cause temporary flushing in more reactive skin, so if you're new to niacinamide, starting around 5% is a safe bet.
Common Myth: "Niacinamide and Vitamin C Don't Mix"
This is one of skincare's most persistent myths. It originated from older, less stable formulations where combining the two could cause a reaction. Modern, well-formulated products generally allow niacinamide and vitamin C to be used together — either layered or in the same formula — without issue. If you prefer to be cautious, using one in the morning and the other at night also works perfectly well.
Setting Realistic Expectations
Niacinamide isn't an overnight fix. Most people notice improvements in tone, texture, and oil control after 4–8 weeks of consistent daily use. It's a long-game ingredient — but a worthwhile one to keep in your "Treat" step.