How does hyaluronic acid function in the skin?

Hyaluronic acid primarily functions as a moisturizer in the skin due to its remarkable ability to retain water. This compound possesses a unique molecular structure that can hold up to 1,000 times its weight in water, making it an exceptional humectant. When applied to the skin, hyaluronic acid draws moisture from the environment and deeper layers of the skin to the epidermis, helping to keep the skin hydrated, plump, and supple. By maintaining optimal moisture levels, it can enhance skin elasticity and reduce the appearance of fine lines and wrinkles, contributing to a more youthful appearance.

While some of the other options address aspects of skin health, they do not reflect the primary role of hyaluronic acid. For instance, it is not recognized as an exfoliant, which involves the removal of dead skin cells, nor is it a direct protector against UV rays. While it may have some indirect benefits for skin barrier protection, its main function remains focused on hydration rather than serving as an anti-inflammatory agent.