Sunscreens are evolving beyond basic UV protection to offer a comprehensive defense system for the skin. Modern formulas now aim to shield against sunlight, pollution, heat, and blue light, while also incorporating ingredients like antioxidants, peptides, and ceramides to support skin health. This advancement addresses the changing nature of sun rays reaching Earth due to ozone depletion and increased awareness of environmental stressors. The focus is shifting from solely blocking UV rays to actively maintaining skin's stability and preventing damage from various external factors.