Niacinamide is a form of vitamin B-3. Niacinamide reduces inflammation, which may help ease redness from eczema, acne, and other inflammatory skin conditions. Results in a natural reduction in pore size over time. It helps regulate the amount of oil the sebaceous glands produce and prevent your glands from going into overdrive. It may be helpful for severe acne, especially inflammatory forms like papules and pustules. Over time, you may see fewer lesions and improved skin texture. It also protects against sun damage, treats hyperpigmentation, minimizes fine lines, wrinkles, and protects against oxidative stress.