Chitosan Schiff-Base Hydrogel Sunscreen: A Multifunctional Hybrid Network with Antioxidant, Ultraviolet-Shielding, and Self-Healing Properties.

Prolonged exposure to ultraviolet (UV) radiation can cause erythema, sunburn, inflammation, and even skin cancer. Sunscreen is highly effective in protecting against UV radiation. Hydrogels, due to their similarity to the skin's extracellular matrix, flexibility, and high water content, have been widely used for sunscreen applications.