Vitamin B3, also known as niacinamide (nicotinamide), is an essential nutrient in the body and delivers a range of benefits to the skin, which is why we add it to all SunSense sunscreens! In fact, niacinamide has been shown to help hydrate and support the skin barrier after UV exposure. Always read the label. Follow the directions for use. Frequent re-application is required #SunSense #vitaminB3 #UVexposure #sunscreen #sunprotection #niacinamide