Cosmetic grade hyaluronic acid (molecular weight 200–600 kDa) is a hyaluronic acid ingredient specifically designed for cosmetic formulations. Its molecular structure forms a stable moisturizing network on the skin's surface while maintaining good spreadability and skin affinity. This molecular weight range helps achieve a synergistic effect of immediate hydration and lasting moisturization, resulting in an ideal balance between moisturizing power, skin feel, and formula stability.