La La Roche-Posay Hydraphase HA Light Moisturiser For Sensitive Skin is a special blend of La Roche-Posay thermal spring water, known for its natural soothing properties, and pure hyaluronic acid derived from green technology through a biofermentation process using plant sugars. This lightweight facial cream is designed to hydrate and calm dry skin. Use this hyaluronic acid face cream for dry skin daily to experience 72 hours of hydration and an instant plumping effect for a glowing complexion. The naturally derived hyaluronic acid (HA) from green technology is a polysaccharide (carbohydrate polymer) that occurs naturally in the skin. HA works as a sponge, drawing and retaining water to provide excellent hydration for all skin types. When incorporated into a product, HA acts as an effective humectant, retaining a large amount of water to help preserve the skin's moisture levels. La Roche-Posay Thermal Spring Water is a soothing water sourced from the town of La Roche-Posay in France and is a key ingredient in many La Roche-Posay products. It is rich in a unique blend of minerals, trace elements, and a high concentration of selenium, a natural antioxidant. La Roche-Posay Hydraphase HA Light Moisturiser deeply hydrates the skin for 72 hours and offers immediate plumping for a strengthened and radiant complexion.