Cosmetic grade high molecular weight hyaluronic acid is a raw material specifically used in skincare and beauty products. Its molecular weight is typically above 1.2 million Daltons. It possesses excellent surface film-forming and water-retention capabilities, forming a soft, breathable moisturizing barrier on the skin's surface, reducing moisture evaporation, and keeping the skin soft and radiant. Due to its large molecular weight, it primarily remains on the surface of the stratum corneum, making it ideal for achieving immediate hydration, increasing skin smoothness, improving dryness and tightness, and enhancing skin radiance.