La La Roche-Posay Hydraphase HA Rich Moisturiser for Sensitive Skin is a unique combination of La Roche-Posay thermal spring water known for its natural soothing properties and pure hyaluronic acid from green technology: biofermentation process using plant sugars. This luxurious face cream is specially formulated to deeply moisturize and calm dehydrated skin. By incorporating this hyaluronic acid face cream into your daily skincare routine, you can enjoy 72 hours of intense hydration and instantly plump, radiant-looking skin. The naturally derived Hyaluronic Acid (HA) from Green Technology is a polysaccharide (carbohydrate polymer) naturally present in the skin. Hyaluronic acid acts as a hydrating ingredient for all skin types by attracting and retaining water like a sponge. When used in skincare products, HA is a powerful humectant that can retain a significant amount of moisture to keep the skin hydrated. La Roche-Posay Thermal Spring Water is a soothing water sourced from the town of La Roche-Posay in France, and it is a key ingredient in many La Roche-Posay products. This water contains a unique blend of minerals, trace elements, and a high concentration of selenium, a natural antioxidant. La Roche-Posay Hydraphase HA Rich Moisturiser deeply hydrates the skin for 72 hours while providing an immediate plump effect for a more resilient and radiant complexion.