Suitable for all skin types, including sensitive. Niacinamide: A form of vitamin B3, niacinamide is a water soluble vitamin. Ceramide-3: Ceramides are lipids naturally found in skin. La Roche-Posay Prebiotic Thermal Water: A soothing water sourced in the town of La Roche-Posay in France and a core ingredient in most of our products.