What it is: A unique, naturally nourishing mineral water for the health of all skin types. What it's used for: La Roche-Posay Thermal Spring Water has a unique, health-promoting composition. Naturally occurring in La Roche-Posay, France, Thermal Spring Water is filled with minerals, trace elements and anti-inflammatory nutrients, making it ideal for all skin types, conditions and after in-office procedures. Selenium, an element found in Thermal Spring Water, provides antioxidant protection which prevents premature skin aging and shields the skin against potentially irritating environmental aggressors. Skin is toned, refreshed, hydrated and healthy.