Hyaluronic acid sodium is widely used in the cosmetic and skincare industry due to its exceptional moisturizing properties. It acts as a humectant, drawing moisture from the environment into the skin, helping to keep it hydrated and plump. This makes it a key ingredient in anti-aging products, serums, and moisturizers, as it reduces the appearance of fine lines and wrinkles. In the medical field, it is commonly used in ophthalmic surgeries as a viscoelastic agent to protect tissues and maintain the shape of the eye during procedures. It is also found in injectable dermal fillers, which are used to restore volume and smooth out facial contours. Additionally, hyaluronic acid sodium is utilized in joint health supplements and injections for osteoarthritis treatment. It helps lubricate joints, reduce inflammation, and improve mobility by enhancing the viscosity of synovial fluid. Its biocompatibility and ability to retain water make it a versatile component in various therapeutic and cosmetic applications.