Nicotinamide, also known as niacinamide, is a form of vitamin B3 that plays a crucial role in cellular metabolism. It helps convert food into energy and is essential for the proper functioning of enzymes in the body. Nicotinamide is found in various foods, including meat, fish, and green vegetables, and can also be taken as a dietary supplement. In addition to its metabolic functions, nicotinamide is known for its benefits in skin health. It is commonly used in skincare products for its anti-inflammatory properties and ability to improve skin barrier function. This makes it effective in treating conditions like acne and rosacea, as well as reducing signs of aging.