While choosing the best niacinamide product, always pay attention to its concentration. Anything above 10 percent can be harmful to the skin and can cause redness, itchiness or burning. The most ideal percentage to use is five, and if you’re a beginner or have sensitive skin, two to three percent can be suitable.
The next thing to keep in mind is if it is formulated with other ingredients or not. While niacinamide has multiple benefits of its own, it gives better results when paired with other ingredients. While you can layer products, look for other components that are blended with niacinamide and pick a product that addresses your skin concerns accordingly.