Helioguard 365 sunscreen, a natural extract from seaweed, stands out for its ability to protect the skin against photoaging caused by UVA rays. Unlike UVB rays, UVA rays penetrate deeply into the skin and are responsible for deep wrinkles and loss of elasticity. Helioguard 365, derived from the red algae Porphyra umbilicalis, offers a natural and safe alternative to synthetic sunscreen filters.