Niacinamide, niacine, nicotinamide.
Enhances the production of ceramides and free fatty acids, stimulates micro-circulation in the dermis1, improve the appearance of wrinkles, reduces redness2. Hydrosoluble (soluble in water), very high stability to light and heat. La Roche-Posay Rosaliac Anti-Redness Hydrating Care. British Journal of Dermatology, September 2000, pages 524–531. Dermatologic Surgery, July 2005, pages 860–865.