Light as Air Skincare with Vaseline. Pro VitaB3 Serum-Burst Lotion is formulated to feel ultra-lightweight and comfortable on the skin all year round, no matter the season. Its serum-burst texture instantly bursts into water droplets upon application for a light, refreshing feel and quick absorption, leaving a unique soft velvet, never-greasy finish. Two best-in-class skincare ingredients, Hyaluronic Acid and Vitamin B3, ensure your skin is hydrated and brighter.