Actually spelled Niacinamide.
Reduces fine lines and wrinkles, hyperpigmented spots, red blotchiness, and skin sallowness (yellowing), and increases elasticity. Further, according to a 2005 study, niacinamide may help alleviate some of the symptoms of rosacea by increasing hydration and barrier function of the stratum corneum (uppermost layer of the skin), and may have some anti-tumor characteristics as well.