Used in skincare products to improve skin barrier function, reduce inflammation, and minimize the appearance of pores and fine lines. Helps treat acne and hyperpigmentation due to its anti-inflammatory and brightening properties. Common ingredient in serums, moisturizers, and sunscreens. In dietary supplements, supports cellular energy production and metabolism. Plays a role in maintaining healthy skin, nerves, and digestion. Used to prevent and treat niacin deficiency. Also studied for potential benefits in managing blood sugar levels in diabetes and supporting brain health. Used in pharmaceuticals for its role in redox reactions and as a precursor to coenzymes involved in numerous biological processes.