Niacinamide, also known as vitamin B3, is a water-soluble vitamin that plays a crucial role in maintaining healthy skin. It helps improve the skin's barrier function, enhances moisture retention, and reduces the appearance of fine lines and wrinkles. Additionally, niacinamide is known for its anti-inflammatory properties, making it beneficial for conditions like acne and rosacea. In skincare products, niacinamide is often included in serums and moisturizers due to its versatility and effectiveness. It can help even out skin tone, reduce redness, and minimize the appearance of pores. Overall, niacinamide is a popular ingredient for those seeking to improve their skin's overall health and appearance.